Full Text
REGD. No. D. L.-33004/99
The Gazette of India
CG-DL-E-11042026-271741
EXTRAORDINARY
PART III—Section 4
PUBLISHED BY AUTHORITY
No. 257]
NEW DELHI, FRIDAY, APRIL 10, 2026/CHAITRA 20, 1948
2616 GI/2026
(1)
CENTRAL ELECTRICITY REGULATORY COMMISSION
NOTIFICATION
New Delhi, the 20th March, 2026
F. No. L-1/268/2022/CERC.—In exercise of powers conferred under Section 178 of the
Electricity Act, 2003 (36 of 2003) read with Section 61 thereof and all other powers enabling it in
this behalf, and after previous publication, the Central Electricity Regulatory Commission hereby
makes the following Regulations, to amend the Central Electricity Regulatory Commission
(Terms and Conditions of Tariff) Regulations, 2024, as amended from time to time, (hereinafter
referred to as “the Principal Regulations”) namely:-
1. Short Title and Commencement.
1.1. These Regulations may be called the Central Electricity Regulatory Commission (Terms
and Conditions of Tariff) (Second Amendment) Regulations, 2026.
1.2. These Regulations shall come into force with effect from the date of notification of these
Regulations in the Official Gazette, except for amendments in Regulations 51 and 52 of these
Regulations.
1.3. The amendments in Regulations 51 and 52 shall be applicable from 1.4.2024.
2. Amendment to Regulation 2 of the Principal Regulations: In Regulation 2 of the Principal
Regulations, after clause (2), the following new clause (2a) shall be inserted, namely:—
“(2a) These regulations shall also apply in all cases where the coal or lignite or gas-
based thermal generating station or inter-state transmission system, installs for storage and
supply of electricity from the integrated energy storage system, for the use of the beneficiaries
or the designated ISTS customers, as the case may be, whose tariff is required to be
determined by the Commission under section 62 of the Act read with section 79 thereof.”
3. Amendment to Regulation 3 of the Principal Regulations: In Regulation 3 of the Principal
Regulations:-
i) In clause (24), the words “and integrated energy storage system” shall be inserted after the
words “Interconnecting Transformers” and before the words “which can be put to use”;
ii) In clause (62), —
a) in sub-clause (i), the words “integrated energy storage system,” shall be inserted
after the words “biomass pellet handling system” and before the words “pollution
control system”;
b) in sub-clause (iii), the words “and integrated energy storage system,” shall be
inserted after the words “communication system” at the end of the clause";
iii) In clause (70), the words “integrated energy storage system” shall be inserted after the
words "associated communication system”;
THE GAZETTE OF INDIA: EXTRAORDINARY
[PART III-SEC.4]
iv) In clause (82), the words “and integrated energy storage system” shall be inserted after the
words “associated communication system” at the end of the clause;
v) In clause (87), after sub-clause (i), the following sub-clause (j) shall be inserted, namely:—
“(j) Lithium-ion battery energy storage system
15 years"
Provided that the useful life of the energy storage system of the new technology will
be specified separately."
4. Insertion of new Regulation 3A to the Principal Regulations: After Regulation 3 of the
Principal Regulations, a new Regulation 3A shall be inserted, namely:—
“3A. Additional Definitions: In these Regulations, unless the context otherwise requires, the
following definitions shall be used in respect of the integrated energy storage system:-
(1) 'Auxiliary energy consumption for integrated energy storage system' or 'AUX(ess)'
means the quantum of energy consumed by auxiliary equipment of the integrated energy
storage system of the thermal generating station or transmission system in addition to the
auxiliary energy consumption under clauses (7) and (8) of Regulation 3 of the Principal
Regulations:
Provided that the auxiliary energy consumption of the integrated energy storage
system shall be measured separately for energy accounting.
(2) 'Battery cell' means the electrochemical device of the battery energy storage system
that stores electrical energy in chemical energy and converts chemical energy into
electrical energy, which consists of a positive (cathode) and a negative (anode) electrode
with the capability to generate electricity.
(3) 'Battery cycle' in respect of a battery energy storage system means the charging of the
battery from the depth of discharge to its maximum rating and discharging to its minimum
specified rating equivalent to the depth of discharge to complete one cycle of a battery
energy storage system:
Provided "Depth of Discharge (DoD)” means the level to which a battery can be
discharged relative to the maximum possible amount of energy that can be discharged by
the battery in a single operational cycle, expressed as a percentage.
(4) ‘C-rate – charge or discharge rate' means the rate of discharge from or charging of
the battery energy storage system, relative to its total capacity per hour and is expressed in
terms of one-hour discharge as a fraction of C-rate.
(5) 'Date of commercial operation of the integrated energy storage system ' or
'COD(ess)' in relation to the energy storage system shall have the same meaning as
specified in Chapter 5 of the Grid Code:
(6) 'Declared capacity of Integrated Energy Storage System' or 'DC(ess)' in relation to
an integrated energy storage system integrated with the generating station or transmission
system means, the capability to deliver ex-bus electricity in MW and MWh declared by
such generating company or transmission licensee, during the day, duly taking into account
the stored electricity after successful charging, and subject to further qualification in these
Regulations.
(7) ‘Energy storage system' or ‘ESS” shall have the same meaning as specified in clause
(46) of Regulation 3 of Grid Code.
(8) ‘Integrated energy storage system' means the energy storage system co-located with
the generating station or the transmission system, as the case may be, connected to a
common bus-bar through the electrical system of existing generating station or the
transmission system, as the case may be,, and for the purpose, including safe and reliable
operation of the grid or for deferring the transmission investment and for enhancing the
flexible operation of the generating station, as the case may be, as per the requirement of
the National Load Despatch Centre or beneficiaries or the designated ISTS customers, as
the case may be.
(9) 'Maximum continuous rating of integrated energy storage system' or 'MCR(ess)'
means the maximum continuous amount of power (in MW) during discharge of integrated
energy storage system guaranteed by the manufacturer at rated parameters for the specific
period (in hours),
(10) 'Plant Availability Factor of energy storage system' or '(PAFess)' in relation to an
integrated energy storage system with generating station for any period means the average
of the daily declared capacities during peak hours (DCs) for all the days during the period
expressed as a percentage of the rated capacity in MW less the auxiliary energy
consumption as per these regulations;
(11) 'Rated capacity' in respect of an integrated energy storage system means the total
amount of energy that can be stored in the integrated energy storage system as per the
specifications of the original equipment manufacturer, expressed in terms of kilowatt-
hours (kWh) or megawatt-hours (MWh), duly adjusted by annual degradation of 2.0%
which shall be reviewed within a period of three years.
(12) 'Round trip efficiency of integrated energy storage system' or 'RTE(ess)' in relation
to a period means the quantum of energy delivered by the integrated energy storage system
of the generating station or the transmission system as a percentage of the energy supplied
for charging the integrated energy storage system which shall be higher of 85% or actual
during the month.
(13) ‘State of charge' in respect of the energy integrated storage system means the amount
of the charge an integrated energy storage system has available for the supply of electricity
at a given time and is expressed in percentage capacity with reference to its rated capacity."
5. Amendment to Regulation 5 of the Principal Regulations: In Regulation 5 of the Principal
Regulations, the following new clause (3) shall be inserted, namely:—
"(3) The date of commercial operation of, whole or part capacity or phase-wise, the
integrated energy storage system installed with the generating station or the transmission
system shall be determined in accordance with the provisions of the Grid Code. .”
6. Amendment to Regulation 8 of the Principal Regulations: In Regulation 8 of the Principal
Regulations:
i) In clause (1),
a) the words “generating station and emission control system” shall be substituted for
the words "generating station, emission control system and integrated energy
storage system":
b) the words “and integrated energy storage system, wherever applicable,” shall be
inserted after the words “a transmission system" and before the words “may be
determined":
c) the words “or integrated energy storage system" shall be inserted after the words
"associated communication system":
d) after proviso (iii), the following proviso (iv) shall be inserted, namely:—
"The generating company or transmission licensee shall apply for the
determination of a supplementary tariff for an integrated energy storage system
installed in a coal, lignite or gas-based thermal generating station or transmission
system, as the case may be, in accordance with these Regulations, not later than 90
days from the date of commercial operation of such integrated energy storage
system."
ii) After clause (5), the following clause (5a) shall be inserted, namely:—
"(5a) Supplementary energy charge of the integrated energy storage system shall
be computed based on the energy charge rate of the electricity sourced from the
associated generating station or the tariff of the electricity procured for charging the
integrated energy storage system based on sources other than the associated generating
station, as the case may be, adjusted for the round-trip efficiency and auxiliary energy
consumption of the integrated energy storage system."
7. Amendment to Regulation 9 of the Principal Regulations: In Regulation 9:—
i) After clause (3), a new clause (3a) shall be inserted, namely:—
"(3a) In case an integrated energy storage system is installed with the generating
station or unit thereof, transmission system or its sub-station, an application shall be
made for the determination of supplementary tariff (fixed storage charges with or
without variable energy charges) based on the actual capital expenditure duly certified
by the Auditor."
ii) In the fourth proviso to clause (1), after the words, “or element thereof", and before the
words, “the applicant, through a specific prayer”, the following words shall be added –“or
new energy storage system integrated with the generating unit or the transmission system”.
iii) After clause (4), a new clause (4a) shall be inserted, namely:—
“(4a) Where the generating company or the transmission licensee has installed
an integrated energy storage system at its generating stations or the transmission
system, as the case may be, the generating company or the transmission licensee shall
file a petition for determination of the supplementary tariff of integrated energy storage
system, not later than 90 days from date of commercial operation of the integrated
energy storage system in accordance with the provision of these Regulations."
8. Amendment to Regulation 10 of the Principal Regulations: In Regulation 10 :—
i) In clause (1), after the words “for an integrated mine” and before the words “or the
transmission licensee”, the words “or an integrated energy storage system" shall be
inserted.
ii) After clause (1), the following explanation shall be added:-
“Explanation: The tariff filing forms specified in Annexure-I shall be used for filing an
application for the determination of supplementary tariff separately, after suitable
modification wherever required.”
9. Amendment to Regulation 11 of the Principal Regulations: In Regulation 11 of the
Principal Regulations:
i) The existing clause shall be numbered (1).
ii) In clause (1) of Regulation 11 of the Principal Regulations, after the words “or for an
integrated mine" and before the words “or the transmission licensee”, the words “or
integrated energy storage system” shall be inserted.
iii) In clause (1) of Regulation 11 of the Principal Regulations, after the words "or the
transmission licensee” and before the words “undertaking any additional capitalization”,
the words " for the transmission system or associated integrated energy storage system"
shall be inserted.
iv) After clause (1), the following new clause (2) shall be inserted, namely:—
"(2) The generating company or the transmission licensee, undertaking any
additional capitalization on account of integrated energy storage system, for a generating
station or a sub-station, as the case may be, shall file a petition for in-principle approval
for incurring such expenditure after prior notice to the beneficiaries or the long-term
customers, as the case may be, along with underlying assumptions, estimates and
justification for such expenditure."
10. Amendment to Regulation 13 of the Principal Regulations: In Regulation 13 of the
Principal Regulations:
i) In sub-clause (c) of clause (1), after the words “emission control system” and before the
words "as admitted by the Commission”, the words “, or the integrated energy storage
system" shall be inserted.
ii) In clause (3), after the words “transmission system or an element thereof”, the words “, or
the integrated energy storage system, as the case may be, ” shall be inserted.
11. Amendment to Regulation 14 of the Principal Regulations: In Regulation 14 of the
Principal Regulations, a new clause shall be inserted, namely:
"(6) The supplementary tariff consisting of supplementary fixed storage charges and
supplementary energy charges, on account of the installation of an integrated energy
storage system in the generating station or transmission system, as the case may be, shall
be determined by the Commission separately.”
12. Amendment to Regulation 15 of the Principal Regulations: In Regulation 15 of the
Principal Regulations, after clause (2), the following new clause (2a) shall be inserted,
namely:-
"(2a) Supplementary capacity charges of energy storage system or
supplementary fixed storage charges: Supplementary capacity charges of the integrated
energy storage system shall be derived based on the Annual Fixed Cost of energy storage
system (AFCess). The Annual Fixed Cost for the integrated energy storage system shall
consist of the components as listed in sub-clauses (a) to (e) of clause (1) of this Regulation.”
13. Amendment to Regulation 16 of the Principal Regulations: In Regulation 16 of the
Principal Regulations:
i) The existing clause shall be numbered clause (1),
ii) After clause (1), the following new clause (2) shall be inserted, namely:—
"(2) The supplementary energy charges of the integrated energy storage system
installed in a generating station or transmission system, as the case may be, shall
consist of the cost of the electricity sourced, after adjustment of round-trip efficiency
and auxiliary energy consumption of the energy storage system, as under:
a) Energy charges of the generating station if it is sourced from the same generating
station; or
b) Energy charges of the other generating station if it is sourced from the share of the
common beneficiaries after adjustment of transmission losses; or
c) Cost of electricity procured at the metering point of the generating station derived
based on the approved tariff applicable at the generating station or at the competitive
rate from the open market."
14. Amendment to Regulation 18 of the Principal Regulations: In Regulation 18 of the
Principal Regulations, after clause 6, a new clause (7) shall be inserted, namely:—
"(7) Any expenditure incurred for the energy storage system during the tariff period,
as may be admitted by the Commission as additional capital expenditure of the generating
station or transmission system for the determination of supplementary tariff, shall be
serviced in the manner specified in clause (1) of this Regulation.”
15. Amendment to Regulation 19 of the Principal Regulations: In Regulation 19 of the
Principal Regulations,
i) In clause (1), after the words “the generating station or the transmission system”, the words
"including integrated energy storage system” shall be inserted.”
ii) In clause (2), after the sub-clause (p), a new sub-clause shall be added as under:
"(q) Expenditure incurred or projected to be incurred, on account of the integrated energy
storage system.”
iii) In clause (3), after the sub-clause (i), a new sub-clause shall be added as under:
"(j) Expenditure incurred or projected to be incurred, on account of the integrated energy
storage system."
16. Amendment to Regulation 23 of the Principal Regulations: In Regulation 23 of the
Principal Regulations,
i) after clause (vi), following new clause (vii) shall be added, namely :—
"(vii) integrated energy storage system
4.00%"
ii) in the proviso, after clause (iv), following new clause (v) shall be inserted, namely:—
"v. where the integrated energy storage system is installed in the generating station or the
transmission system, initial spares specified in this regulation is in addition to the initial
spares allowed for original project and generating company or the transmission licensee
shall maintain its expenditure separately."
17. Amendment to Regulation 24 of the Principal Regulations: In clause (1) of Regulation 24
of the Principal Regulations, after the words "an existing project" and before the words
“incurred or projected to be incurred”, the words “including integrated energy storage system”
shall be inserted.
18. Amendment to Regulation 25 of the Principal Regulations: In clause (1) of Regulation 25
of the Principal Regulations, after the words “a new project” and before the words “on the
following counts”, the words “including integrated energy storage system” shall be inserted.
19. Amendment to Regulation 26 of the Principal Regulations: In clause (1) of Regulation 26
of the Principal Regulations, after the words “the communication system” and before the
words "incurred or projected to be incurred”, the words “the integrated energy storage system”
shall be inserted.
20. Amendment to Regulation 27 of the Principal Regulations: In clause (1) of Regulation 27
of the Principal Regulations, the words “or the transmission licensee” shall be deleted.
21. Insertion of New Regulations 29A and 29B of the Principal Regulations: After Regulation
29 of the Principal Regulations, a new Regulation 29A shall be inserted, namely:—
“29A. Additional Capitalization on account of an integrated energy storage system
with the generating station: (1) A generating company required to incur additional capital
expenditure in the existing generating station for an integrated energy storage system shall
share its proposal with the beneficiaries for their consideration, and seek response within 30
days. The generating company shall, thereafter, file a petition for in-principle approval of the
integrated energy storage system in the planning stage along with the response of the
beneficiaries, except those covered under the viability gap funding scheme. For the integrated
energy storage system covered under the viability gap funding scheme, the generating
company shall file the petition for approval at the subsequent stage, within six months from
the notification of these regulations.
(2) The proposal under clause (1) above shall contain details of the proposed technology, scope
of the work, phasing of expenditure, schedule of completion, estimated completion cost
including interest during construction, foreign exchange component, if any, detailed
computation of indicative impact on tariff to the beneficiaries, cost-benefit analysis and any
other information considered to be relevant by the generating company.
(3) Where the generating company makes an application for approval of additional capital
expenditure for installation of integrated energy storage system, the Commission may grant
in-principle approval after due consideration of the reasonableness of the cost estimates,
financing plan, schedule of completion, interest during construction, use of efficient
technology, cost-benefit analysis, and such other factors as may be considered relevant by the
Commission.
(4) After completion of the implementation of the integrated energy storage system, the
generating company shall file a petition for the determination of a supplementary tariff for the
integrated energy storage system. Any expenditure incurred or projected to be incurred and
admitted by the Commission after a prudence check based on the reasonableness of the cost
shall form the basis of the determination of the tariff.
(5) Un-discharged liability, if any, on account of the integrated energy storage system shall be
allowed as additional capital expenditure during the year it is discharged, subject to prudence
check."
“29B. Additional Capitalization on account of integrated energy storage system
with the transmission system : (1) A transmission licensee required to incur additional capital
expenditure in the existing transmission system for an integrated energy storage system shall
share its proposal with all long-term transmission customers or the Designated ISTS
Customers of the region, concerned Regional Power Committee, Central Transmission Utility,
and the concerned Regional Load Despatch Centre, for their consideration and seek response
within 30 days.
(2) Where the integrated energy storage system is to be installed with the existing transmission
system, the concerned transmission licensee shall forward a copy of the proposal to all long-
term transmission customers or the Designated ISTS Customer of the region, as may be
applicable, and file a petition for in-principle approval in the planning stage along with the
response of long-term transmission customers or the Designated ISTS Customers, except those
covered under the viability gap funding scheme. For the integrated energy storage system
covered under the viability gap funding scheme, the transmission licensee shall file the petition
for approval at the subsequent stage, within six months from the notification of these
regulations.
(3) The transmission licensee shall obtain the concurrence for each integrated energy storage
system with the transmission system from the Central Transmission Utility, National Load
Despatch Centre and the concerned Regional Load Despatch Centre for submission to the
Commission.
(4) The proposal under clauses (1) and (2) above shall contain details of the proposed
technology, scope of the work, phasing of expenditure, schedule of completion, estimated
completion cost including interest during construction, foreign exchange component, purpose
of investment whether for increasing grid reliability or transmission deferral, if any, detailed
computation of indicative impact on tariff to the beneficiaries, cost-benefit analysis and any
other information considered to be relevant by the transmission licensee, as the case may be.
(5) Where the transmission licensee makes an application for approval of additional capital
expenditure for the installation of an integrated energy storage system, the Commission may
approve by considering the following:
a) The integrated energy storage system for exclusive use of strengthening reliability of
the grid operation or deferring investment of the transmission system or efficient
operation of the power system, where the cost will be recovered through Central
Electricity Regulatory Commission (Sharing of transmission charges) Regulations,
2020;
Provided that where the integrated energy storage system is to be installed to
provide storage services as other businesses, the same will be governed through the
Central Electricity Regulatory Commission (Sharing of Revenue Derived from
Utilization of Transmission Assets for Other Business) Regulations, 2020;
b) The integrated energy storage system may be partly used for reliability of the grid
operation or deferring investment as per clause (a) above or any other purpose as may
be approved by the Commission.
(6) After completion of the implementation of the integrated energy storage system, the
transmission licensee shall file a petition for the determination of a supplementary tariff for
the integrated energy storage system. Any expenditure incurred or projected to be incurred and
admitted by the Commission after a prudence check based on the reasonableness of the cost
shall form the basis of the determination of the tariff.
(7) Un-discharged liability, if any, on account of the integrated energy storage system shall be
allowed as additional capital expenditure during the year it is discharged, subject to prudence
check."
22. Amendment to Regulation 30 of the Principal Regulations:
i) In para (iii) of the second proviso to clause (3) of Regulation 30 of the Principal
Regulations, a new clause (c) shall be inserted, namely:—
“c) measurement of ramp rate, for the purpose of this Regulation, is to be decided
by the National Load Dispatch Centre by issuing suitable guidelines, in consultation with
the stakeholders, for measurement by considering the energy measurement at a suitable
interval."
ii) After clause (3) of Regulation 30 of the Principal Regulations, a new clause (4) shall be
inserted, namely:—
"(4) Return on equity for an integrated energy storage system installed as additional
capitalization with the existing generating station or the transmission system, as the case
may be, shall be computed at the base rate of 14.00%."
23. Amendment of Regulation 32 of the Principal Regulations: The following fifth proviso
shall be inserted in clause (5) of Regulation 32 of the Principal Regulations, namely:
“Provided also that if the generating company or the transmission licensee, as the
case may be, has availed a part or entire loan, during construction period or operation period,
from a related party at a rate of interest higher than the rate of interest charged by recognised
financial or lending institutions not classified as related party, the rate of interest shall be
a) the weighted average rate of interest calculated based on the existing loan portfolio,
excluding part of the loan availed from a related party; or
b) lower of actual or 1-year SBI MCLR plus 205 basis points, where the entire loan is
availed from a related party; and
c) reduced by restructuring or re-financing the loan within a period of one year from the
date of commercial operation for the new project or from the date of notification of this
regulation for the existing project.
Clarification: (1) The meaning of related party will be considered as per sub-section 76 of
Section 2 of the Companies Act, 2013. (2) The recognised financial or lending institutions
means scheduled commercial banks, all-India financial institutions regulated by the
Reserve Bank of India, and Government-owned Non-Banking Financial Companies.”
24. Amendment to Regulation 33 of the Principal Regulations: In Regulation 33 of the
Principal Regulations, a new clause (13) shall be inserted, namely:—
"(13) The depreciation of the integrated energy storage system installed with the
generating station or the transmission system shall be recovered in the following manner:-
a) If the integrated energy storage is implemented within the original scope of the
generating station or the transmission system, the depreciation of the generating station
or unit thereof or the transmission system, including the integrated energy storage
system, shall be computed in accordance with Clauses (1) to (9) of this Regulation.
b) If an existing generating station or transmission system in which the integrated energy
storage system is installed is yet to complete its useful life, the depreciation shall be
computed annually from the date of operation of the integrated energy storage system
based on the straight-line method at rates specified in Appendix-I to these regulations:
Provided that the unrecovered depreciation as on 31st March of the year
closing after a period of 12 years from the date of operation of such integrated energy
storage system shall be spread over the lower of the balance useful life of the integrated
energy storage system or balance operational life of the generating station or the
transmission system, as the case may be, which shall not be less than 10 years.
25. Amendment to Regulation 34 of the Principal Regulations: In clause (1) of Regulation 34
of the Principal Regulations, a new clause (e) shall be inserted, namely:—
“(e) For an integrated energy storage system of coal, lignite or gas-based thermal
generating stations or the transmission system:-
(i) Receivables equivalent to 45 days of the supplementary tariff of an integrated
energy storage system;
(ii) Maintenance spares at 10% of operation and maintenance expenses and
(iii) Operation and maintenance expenses for one month.”
26. Amendment to Regulation 36 of the Principal Regulations: In Regulation 36 of the
Principal Regulations:-
i) In first proviso to sub-clause (6) of the clause (1), after the words, “water charges shall be
allowed" the words “to be recovered on monthly basis from the beneficiaries on
submission of Auditor certificate,”, shall be inserted.
ii) In second proviso to sub-clause (6) of the clause (1), after the words, “generating station”
and before the words “shall submit", the words, “shall be allowed to recover security
expenses on monthly basis on submission of the Auditor certificate and,", shall be inserted.
iii) In sub-clause (6) of the clause (1), following fourth proviso shall be inserted after the third
proviso, namely:—
"Provided further that the Ash Transportation Expenses incurred by the
thermal generating stations toward supply of ash, for the purpose of infrastructure or
works owned by the Central Government, State Government or their entities, limited
to construction of road, flyover embankments, shoreline protection structures in
coastal districts, dams, or filling of the mine void, shall be allowed to be recovered
from the beneficiaries on a monthly basis after adjustment of revenue generated,
subject to the following conditions:-
a) submission of the Auditor Certificate towards monthly expenditure
towards ash transportation expenses, and a certificate of delivery from the
users of ash;
b) award of ash transportation contract through transparent competitive
bidding;
c) the monthly ash transportation expenses allowed shall be subject to true-
up at the end of the tariff period;
d) surplus revenue after adjustment of ash transportation expenses shall be
treated as Non-tariff income; and
e) the disposal of ash by coal and lignite based thermal generating station
shall be as per the guidelines dated 30th January, 2026 issued by the
Ministry of Power, as amended from time to time;
f) the mechanism of monthly recovery specified in this clause shall not apply
for the supply of ash for the purposes not specified in this clause such as
filling of low lying area, cement industries and for eco-friendly purposes
in line with notification dated 31st December, 2021, as amended time to
time, of Ministry of Environment, Forest and Climate Change, but same
shall be considered, on case to case basis, in accordance with the
applicable regulations.
iv) In sub-clause (a) of clause (2), after the words “shall be fixed at” and before the words “of
the original project cost”, the words and expressions “3.5% and 5.0%" shall be substituted
by "3.0% and 4.5%".
v) In sub-clause (a) of clause (3), after the fourth proviso, a new fifth proviso shall be inserted,
namely:—
"Provided also that the O&M expenses of the transmission system of Bhakra
Beas Management Board shall be allowed based on past year data on a case-by-case
basis at the time of the determination of tariff."
vi) After clause (3), the following new clause (4) shall be inserted, namely:—
"(4) Integrated Energy storage system: The operation and maintenance
expenses on account of integrated energy storage systems in coal, lignite or gas-based
thermal generating stations or the transmission system, as the case may be, shall be
2.0% of the admitted capital expenditure (excluding IDC and IEDC) as on the date of
commercial operation, which shall be escalated annually @ 5.25% during the first two
years of operation;
Provided that the generating company or the transmission licensee, as the case
may be, shall file the details of the operation and maintenance expenses for each
financial year for consideration of the Commission and wherever required, the
Commission may revise the operation & maintenance expenses through separate order
either by its own motion or application filed by the generating company or the
transmission licensee, as the case may be."
27. Amendment to Regulation 37 of the Principal Regulations: In Regulation 37 of the
Principal Regulations, proviso to clause (3) shall be substituted by the following, namely:—
“Provided that the generating company may request an interim input price of new
integrated mine in its petition, which may be allowed by the Commission up to 90% of the
claimed input price after the first hearing of the application;
Provided further that the difference between the input price of lignite determined
under these regulations and the input price of lignite either adopted by the generating
company in terms of this sub-regulation or the interim input price allowed by the
Commission under the first proviso to this sub-regulation shall be recoverable or payable
in accordance with sub-regulation (4) of this Regulation.”
28. Amendment to Regulation 39 of the Principal Regulations: In Regulation 39 of the
Principal Regulations:—
i) In clause (1), the words “Coal Mines (Special Provisions) Act, 2015”, shall be substituted
by the words and expressions “Coal Mines (Special Provisions) Act, 2015, Mines and
Minerals (Development and Regulation) Act, 1957 or any other applicable Act”.
ii) In clause (2), the words “Coal Mines (Special Provisions) Act, 2015”, shall be substituted
by the words and expressions “Coal Mines (Special Provisions) Act, 2015, Mines and
Minerals (Development and Regulation) Act, 1957 or any other applicable Act”.
iii) New clause (4A) shall be inserted, namely:—
“(4A) No incentive shall be payable to the generating company for the production of
coal exceeding ATQ, up to 100% of the quantity specified in the Mining Plan:
Provided that if the actual production of coal or lignite, as the case may be,
from the integrated mine exceeds 100% of the quantity specified in the Mining Plan,
the generating company shall retain fifty percent of the savings on achieving higher
efficiency worked out by the following formulae:-
Sharing of gains = 1/2 x Savings x Additional deliveries
Savings = [ROM Cost (Annual quantity of coal or lignite as specified in the mining
plan) - ROM Cost (Actual production) ]
Where,
i) ROM Cost (Actual production) is the ROM cost in Rs per Tonne of coal or
lignite worked out as per the sub-regulation (2) and (3) of this Regulation
by considering the actual quantity of coal or lignite specified in the mining
plan and the actual annual extraction cost;
ii) ROM Cost (100% quantity of coal lignite specified in the mining plan) is
the ROM cost in Rs per Tonne of coal or lignite worked out as per the sub-
regulation (2) and (3) of this Regulation by considering 100% quantity of
coal or lignite specified in the mining plan and actual extraction cost;
iii) Additional deliveries are the quantity of coal delivered to the associated
generating station beyond 100% quantity of coal or lignite specified in the
mining plan."
iv) In clause (5), after the words “terms of Rupees per tonne” at the end of sentence, the words
and expressions “on a monthly basis based on ATQ which shall be reconciled at the end
of the year based on actual production from the integrated mine, and the differential amount
shall be adjusted in the six-monthly instalments” shall be inserted.
29. Amendment to Regulation 41 of the Principal Regulations: In clause (3) of Regulation 41
of the Principal Regulations, after the second proviso, the following third proviso shall be
inserted, namely:—
“Provided also that the expenditure incurred for development of an integrated mine,
with the approval of the Board of the generating company before the issue of the
Investment Approval, shall also form part of the capital cost, and IDC and IEDC shall be
considered in the manner as specified under Regulation 21 of these Regulations."
30. Amendment to Regulation 42 of the Principal Regulations: In Regulation 42 of the
Principal Regulations:-
i) in clause (1), after the words “as per the Mining Plan”, the words “or as per the investment
approval by the Board;" shall be inserted.
ii) in sub-clause (a) of clause (1), after the words “as per the Mining Plan”, the words “or as
per the investment approval or additional capital expenditure approved by the Board;"
shall be inserted.
iii) in sub-clause (a) of clause (2), after the words “as per the Mining Plan”, the words “or as
per the investment approval or additional capital expenditure approved by the Board" shall
be inserted.
31. Amendment to Regulation 45 of the Principal Regulations: In Regulation 45 of the
Principal Regulations:-
i) in proviso (ii) of clause (2), the word “and” between the “freehold land is conditional” and
"is required to be returned” shall be substituted by the words “or”.
ii) in proviso (ii) of clause (2), after the words “prudence check by the Commission" and
before the words "; and", the words “and the net realisable value of the said land after the
operational life of the mine or in case of alternate use, the deemed cost of the land, if any,
shall be fully shared with the beneficiaries” shall be inserted.
32. Amendment to Regulation 50 of the Principal Regulations: In Regulation 50 of the
Principal Regulations:-
i) in clause (2), after the words “the commensurate grade of coal", the words “or price of
alternative coal, as the case may be" shall be inserted.
ii) a new clause (3) shall be inserted, namely:—
"(3) In case of an integrated mine of lignite, the actual production is reduced
below ATQ attributed to the low scheduled generation from beneficiaries (including
scheduling to another beneficiary or open market), the generating company shall
recover the fixed components of annual extraction cost of unutilized lignite, after duly
subtracting the lignite sold in the open market, on a case-by-case basis;
33. Amendment to Regulation 51 of the Principal Regulations: In Regulation 51 of the
Principal Regulations:
i) in sub-clause (a) of clause (3), the words “If Mine Developer and Operator is appointed”
shall be substituted by the words “If OB adjustment is not factored in the mining charge
of the Mine Developer and Operator contract"
ii) in para (iii) in sub-clause (b) of clause (3), the words “without” in the words and
expressions "without the OB adjustment as per contract” shall be substituted by the words
"with".
iii) para (vi) in sub-clause (b) of clause (3) shall be deleted."
34. Amendment to Regulation 52 of the Principal Regulations: In Regulation 52 of the
Principal Regulations:-
i) in sub-clause (b) of clause (2), the formula of GCV adjustment shall be substituted by the
following, namely:—
"If GCV adjustment or the adjustment of parameters defining the GCV of coal, is not
factored into the mining charge of the Mine Developer and Operator contract:
GCV Adjustment = [(Mining Charge)] X [(Declared GCV of coal – Weighted
Average GCV of coal extracted in the year)/ (Declared GCV
of coal)]
If the Mine Developer and Operator is not appointed:
GCV Adjustment = [(Operation & Maintenance expenses of the mining activity
/ATQ)] X [(Declared GCV of coal – Weighted Average GCV
of coal extracted in the year)/ (Declared GCV of coal)]"
35. Amendment to Regulation 53 of the Principal Regulations: In Regulation 53 of the
Principal Regulations, in clause (1) the words “Coal Mines (Special Provisions) Act, 2015",
shall be substituted by the words and expressions “Coal Mines (Special Provisions) Act, 2015,
Mines and Minerals (Development and Regulation) Act, 1957 or any other applicable Act”.
36. Amendment to Regulation 57 of the Principal Regulations: In Regulation 57 of the
Principal Regulations, the existing clause shall be numbered (1) and thereafter, a new clause
(2) shall be inserted:
"(2) The Supplementary Energy Charges on account of the integrated energy storage
system shall comprise the energy charges of the electricity sourced from the same generating
station as approved by the Commission, or the cost of the electricity sourced from other
generating stations as determined or adopted by the Commission, or the least cost of electricity
procured at the competitive rate from the open market.”
37. Amendment to Regulation 61 of the Principal Regulations: After Regulation 61 of the
Principal Regulations, the following Regulation 61A shall be inserted, namely:—
"(61A) Aggregate cost of Electricity used for charging integrated energy storage
system: The cost of electricity for an integrated energy storage system for supplementary
energy charges shall be the:
a) Energy charges of the generating station if such energy is sourced from the
surplus generation of the same generating station;
b) Energy charges of such other generating station from where the energy is
sourced for charging the integrated energy storage system from the share of the
same beneficiaries of the generating station where the integrated energy storage
system is installed; and
c) Aggregate cost of electricity (fixed charges, energy charges and any other) used
for charging of the integrated energy storage system of the generating station if
such energy is sourced from another generating station or the market price of
electricity procured from the open market."
38. Amendment to Regulation 63 of the Principal Regulations: In Regulation 63 of the
Principal Regulations, the heading shall be substituted by the following, namely:—
"63. Computation and Payment of Supplementary Capacity Charge on account of
emission control system for Coal or Lignite-based Thermal Generating Stations:"
39. Amendment to Regulation 64 of the Principal Regulations: In Regulation 64 of the
Principal Regulations, the heading shall be substituted by the following, namely:—
“64. Computation and Payment of Energy Charge for Thermal Generating Stations
and Supplementary Energy Charge on account of emission control system for Coal or
Lignite-based Thermal Generating Stations:"
40. Insertion of New Regulation 64A of the Principal Regulations: After Regulation 64 of the
Principal Regulations, the following new Regulation 64A shall be inserted, namely:—
“64A. Computation and Payment of Supplementary Capacity Charge on account of
integrated energy storage system for Coal, Lignite or Gas-based Thermal Generating
Stations:
(1) The fixed cost of the integrated energy storage system installed in coal, lignite or
gas-based thermal generating stations shall be computed on an annual basis based on
the norms specified under these Regulations and recovered every month under a fixed
storage charge. The total fixed storage charge for an integrated energy storage system
shall be shared by its beneficiaries as per their respective percentage share or allocation
in the capacity of the generating station where the integrated energy storage system is
installed.
(2) The fixed storage charge of the integrated energy storage system payable to a coal
or lignite or gas-based thermal generating station for a calendar month shall be
calculated in accordance with the following formulae:
SCCess(n) = (AFCess) x (n/12) x (PAFess M(n)/NAPAFess) subject to ceiling of
(12)
{(AFCess) x (n/12)} – Σ SCC(n-1)
n=1
Where,
SCCess(n)
= Supplementary Capacity Charges of the integrated energy
storage system for the nth Month.
AFCess
= Annual Fixed Cost of the ESS.
PAFessM(n) = Plant Availability Factor achieved up to the end of the nth
Month.
NAPAFess = Normative Annual Plant Availability Factor of the integrated
energy storage system.
(3) Normative Plant Availability Factor for a month for the purpose of Fixed Storage
Charge of the integrated energy storage system shall be as specified in clause (e) of
Regulation 70A of these regulations. The PAFessM(n) shall be worked out in
accordance with Clause (59) of Regulation 3 of these Regulations."
41. Insertion of New Regulation 64B of the Principal Regulations: After Regulation 64 of the
Principal Regulations and Regulation 64A as given above, a new Regulation 64B shall be
inserted:-
“64B. Computation and payment of supplementary energy charge on account of
integrated energy storage system for coal, lignite or gas-based thermal generating
stations:
(1) The energy charge of the integrated energy storage system shall cover the cost of
energy required for charging the integrated energy storage system during charging
operation.
(2) The energy used for charging the integrated energy storage system shall be arranged
from the surplus generation from the associated generating station where the integrated
energy storage system is installed or the other generating station or from the open
market:
Provided that—
a) use of integrated energy storage systems by the generating company to
maintain the technical minimum of the generating unit and to ensure the
continuous supply to the beneficiaries shall have priority;
b) where the surplus energy from the associated generating station is not available
for charging the integrated energy storage system, energy from the most
economical alternate source may be arranged by the beneficiary or the
generating company on behalf of the beneficiaries.
(3) The supplementary Energy charge payable to the generating company for a month
shall be:
Supplementary Energy Charges (SEC(n)) = (Supplementary Energy charge
rate of integrated energy storage system (SECRess) in Rs/kWh) x {Scheduled
energy from integrated energy storage system (ex-bus) for the nth month in
kWh}
(4) The supplementary energy charge rate on account of the integrated energy storage
system shall be worked out based on the source from where the electricity is procured
for charging the integrated energy storage system in the following manner:
a) Charging from an associated generating station whose tariff is determined by
the Commission:
(SECRess in Rs/kWh) = (ECR in Rs/kWh) / [Maximum (Normative
Round-trip efficiency (RTEess), Actual Round
trip efficiency) x (1-AECess)]
b) Allocated share of beneficiaries from another generating station whose tariff is
determined by the Commission:
(SECRess in Rs/kWh) = (ECR in Rs/kWh) / [ Maximum (Normative
Round-trip efficiency (RTEess), Actual Round
trip efficiency) x (1-AECess)]
c) Charging from another generating station whose tariff is approved by the
Commission:
(SECRess in Rs/kWh) = [ (ECR) + (CC)] in Rs/kWh) / [Maximum
(Normative Round-trip efficiency (RTEess),
Actual Round trip efficiency) x (1-AECess)]
d) Charging from procuring electricity from the open market or any other source:
(SECRess in Rs/kWh) = (Discovered Tariff in Rs/kWh) / [[Maximum
(Normative Round-trip efficiency (RTEess),
Actual Round trip efficiency ) x (1-AECess)]
e) Charging from electricity drawal from the grid during high frequency operation:
(SECRess in Rs/kWh) = (DSM Rate in Rs/kWh) /[Maximum
(Normative Round-trip efficiency (RTEess),
Actual Round trip efficiency ) x (1-AECess)].
(5) In addition to the supplementary capacity charges and supplementary energy charges,
an incentive shall be payable to a generating station or unit thereof as ten paise per kWh
for excess discharge of energy over and above the energy corresponding to normative
round-trip efficiency achieved on a cumulative basis, as specified in Regulation 70 of these
regulations.
(6) In case energy for charging is arranged by the beneficiaries at their cost, the Energy
Charge Rate shall be zero."
42. Amendment of Regulation 65 of the Principal Regulations: In clause (7) of Regulation 65
of the Principal Regulations:-
i) The words and expressions "truing up at the end of the tariff period" shall be
substituted by the words “being trued up on the application filed by the generating
company at the end of the tariff period".
ii) The word "directly” after the word, "may" and before, "recover” shall be omitted.
43. Amendment to Regulation 70 of the Principal Regulations: In Regulation 70 of the
Principal Regulations, the following new clause (FF) shall be inserted, namely:—
“(FF) Norms of operation for integrated energy storage system : (1) Norms for the
operation of an integrated energy storage system shall be as under:-
a) Normative Availability Factor of integrated energy storage system (NAPAFess) shall
be 90% for an integrated energy storage system installed at the generating station;
b) Round-trip efficiency of the integrated energy storage system (RTEess) shall be 85%
for an integrated energy storage system installed at the generating station or the
transmission system;
c) Auxiliary Energy Consumption of integrated energy storage system (AECess) shall be
5% of the input energy supply to an integrated energy storage system installed at the
generating station or the transmission system, as the case may be.”
44. Amendment to Regulation 74 of the Principal Regulations: In Regulation 74 of the
Principal Regulations:-
i) The existing clause shall be numbered (1) and after the words “for the generating station”,
the words and expressions, “including an integrated energy storage system" shall be
inserted.
ii) In clause (1), the following proviso shall be inserted, namely:—
“Provided that the first right of discharge, from the integrated energy storage
system, shall lie with the beneficiary, except when it is required for the safe and secure
operation of the power system.”
iii) The following new clauses (2) and (3) shall be inserted, namely:—
“(2) The procedure for charging, scheduling, and dispatch of electricity and energy
account for the integrated energy storage system shall be prepared by :
(a) the National Load Despatch Centre in consultation with the beneficiaries,
respective Regional Power Committee and Regional Load Dispatch Centre,
consistent with the Grid Code for integrated energy storage system with the
generating station;
(b) the National Load Despatch Centre in consultation with the designated ISTS
customers, respective Regional Power Committee and Regional Load Dispatch
Centre, consistent with the Grid Code for integrated energy storage system with the
transmission system.
(3) In case of an integrated energy storage system with the generating station, the
surplus stored energy can be made available to the National Load Dispatch Centre to use
under ancillary services. In case of stored energy of an integrated energy storage system
with the transmission system, the priority of usage will be decided by the National Load
Despatch Centre.”
45. Amendment of Regulation 78 of the Principal Regulations: In Regulation 78 of the
Principal Regulations, after clause (2), the following new clauses (3) and (4) shall be added,
namely:-
"(3) The charges determined under these regulations in relation to the integrated energy
storage system forming part of the transmission system shall be shared by the beneficiaries
or long-term customers or the designated ISTS customers, as the case may be, in
accordance with the Sharing Regulations:
Provided that receipts received from providing storage services by the transmission
licensee to the generating company or licensee shall be adjusted to reduce the yearly
transmission charges of the transmission system.
(4) The transmission licensee shall retain the revenue of ten paise per kWh for excess
discharge of energy over and above the energy corresponding to normative round-trip
efficiency achieved on a cumulative basis, as specified in Regulation 70 of these regulations.”
46. Insertion of New Regulation 84A of the Principal Regulations: After Regulation 84 of the
Principal Regulations, the following new Regulation 84A shall be inserted, namely:—
“84A. Sharing of gains on account of storage services: (1) If the generating company or
the transmission licensee, as the case may be, renders storage service to the other generating
company, beneficiaries, or the system operator in the form of ancillary services or sale in
the open market, there may be a gain on account of the following:
a) the receipt of the additional charges towards the supplementary fixed
charges of the integrated energy storage system;
b) the receipt of the higher energy charges in comparison with the
supplementary energy charges; or
c) both (a) and (b) above.
(2) The receipt, excluding incentive, if any, under clause (1) above –
a) shall be appropriated by the generating company against the
supplementary storage charges and supplementary energy charges first,
and net gain, after adjusting the fixed cost, shall be shared with the
beneficiaries and the generating company in the ratio of 1:1;
b) shall be adjusted by the transmission licensee in the yearly transmission
charges of the transmission system."
47. Insertion of New Regulation 101A of the Principal Regulations: After Regulation 101 of
the Principal Regulations, the following new Regulation 101A shall be inserted, namely:—
"101A. Special Provisions relating to Regulatory Sandbox: To scale up research,
development, and innovation (RDI) in power sector relevant for energy security, energy
transition and self-reliance, the generating company or the transmission licensee, or the
company whose tariff or input price determined under these Regulations shall be eligible
to participate in the Regulatory Sandbox for undertaking innovation and research projects
in the power sector, with prior approval of the Commission, and the additional cost on
this count shall be allowed up to 1.0% % of annual fixed cost or ₹100 Cr, whichever is
less. The Commission shall issue the guidelines for implementation of the regulatory
sandbox."
48. Amendment to the Appendix I of the Principal Regulations: (1) In Appendix-I,
Depreciation Schedule of the Principal Regulations, after the serial number o(iii), following
assets in the row at serial number “oo." shall be added :-
+-----+-----------------------------------+--------+
| oo. | Integrated energy storage system (lithium-ion) | 6.33% |
+-----+-----------------------------------+--------+
(2) In Appendix-II, Depreciation Schedule of the Principal Regulations, after the serial number
o(iii), following assets in the row at serial number “oo.” shall be added :—
+-----+-----------------------------------+--------+
| oo. | Integrated energy storage system (lithium-ion) | 6.33% |
+-----+-----------------------------------+--------+
49. Amendment to the Appendix IV of the Principal Regulations: In Appendix-IV of the
Principal Regulations:—
i) in clause (2), the following sub-clauses (via) and (viii) shall be inserted, namely:—
“via) Integrated Energy Storage System (“ESS”): Each integrated ESS with the
transmission system or sub-station shall be considered as a separate element.”
viii) Thyristor Controlled Series Reactors (TCSCs) or Fixed Series Reactors:
Each Thyristor Controlled Series Reactor (TCSCs) or Fixed Series Reactors shall be
considered as one element.
ii) In clause (3), the following shall be inserted:
a) “+(z X AVz) +(e X AVe)” and “z+e” shall be added in the numerator and denominator
respectively.
b) The following terms shall be added before the formula of TAFMn (in %) for HVDC
System:
Z = Total number of TCSs or FSCs
AVz = Availability of z number of TCSs or FSCs
E = Total number of ESSs
Ave = Availability of number of ESS"
c) In clause (4), the following sub-clauses shall be added:
"(h) For TCSCs/FSCs- The total rated MVAR capacity;
(i) For integrated energy storage system- the total rated MVARh capacity”
50. Amendment to Appendix-V of the Principal Regulations: In Appendix-V of the Principal
Regulations:-
i) the following formulae shall be inserted, namely:—
AVz (Availability of z no. of TCSCs/FSCs) = Σ² Wa(Ta-TNAa)/Ta
a=1
/ Z
Σ Wa
a=1
AVe(Availability of e no. of ESS) = Σε We(Te -TNAe)/Te
e=1
/ Z
Σ We
e=1
ii) the following new terms shall be inserted, namely:—
Wa = Weightage factor for ath TSC or FSC
We = Weightage factor for eth ESS
51. Amendment to Tariff Filing Forms in Annexure-1 to the Principal Regulations: In
Annexure- I of the Principal Regulations
i) In Part I, Tariff filing forms for the determination of supplementary tariff for Thermal
Generating station, the amendments as identified in Appendix-A shall be incorporated
in the tariff filing forms for the determination of supplementary tariff.
ii) In Part III, Tariff filing forms for the determination of supplementary tariff for the
Transmission system, the amendments as identified in Appendix-B shall be
incorporated
HARPREET SINGH PRUTHI, Secy.
[ADVT.-III/4/Exty./26/2026-27]
Note: (1) The Central Electricity Regulatory Commission (Terms and Conditions of Tariff)
Regulations, 2024 were published vide notification No. L-1/268/2022/CERC dated 15th March
2024 and in the Gazette of India, Extraordinary, Part III-Section 4. No. 468 dated 1st July 2024.
(2) The Central Electricity Regulatory Commission (Terms and Conditions of Tariff) (First
Amendment) Regulations, 2024 were published vide notification No. L-1/268/2022/CERC dated
4th February 2025 and in the Gazette of India, Extraordinary, Part III-Section 4. No. 293 dated
11th April, 2025.
Appendix-A
List of the amendments in the Tariff Filing Forms (Thermal) for the determination of the Tariff, Main Tariff Form,
Annexure- I, Part I of the Principal Regulations
1. The following rows shall be added in the Form-1 of Annexure-I (Part I) of the Principal Regulations
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| S. No. | Particulars | Unit | Existing | 2024-25 | 2025-26 | 2026-27 | 2027-28 | 2028-29 |
| | | | 2023-24 | | | | | |
+========+==========================================+============+===========+===========+===========+===========+===========+===========+
| 4. | Summary of Supplementary Tariff (ESS) | | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.1 | Depreciation | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.2 | Interest on Loan | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.3 | Return on Equity¹ | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.4 | Interest on Working Capital | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.5 | O&M Expenses | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| | Total | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 4.6 | Supplementary Capacity Charges (ESS) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5 | Supplementary Energy Charges & Source of | | | | | | | |
| | Charging | | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.1 | Same Generating Station (Name) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.2 | Another Generating Station 1 (Name) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.3 | Another Generating Station 2 (Name) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.4 | Renewable Generation 1 (Name) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.5 | Renewable Generation 2 (Name) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 5.6 | Open Market (Name of Platform/Traders) | Rs/Unit | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| | Total | | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
2. In the Form-1(I), the title of the form “Statement showing claimed capital cost – (A+B)" shall be substituted by the
words and expressions “Statement showing claimed capital cost of generating station, emission control system or
the integrated energy storage system, as the case may be – (A+B)”
3. In the Form-1(IIA), the title of the form “Statement showing Return on Equity at Normal Rate" shall be
substituted by the words and expressions “Statement showing Return on Equity at Normal Rate of generating
station, emission control system or the integrated energy storage system, as the case may be – (A+B)”
4. In the Form-1(IIB), the title of the form “Statement showing Return on Equity linked to SBI MCLR” shall be substituted
by the words and expressions “Statement showing Return on Equity linked to SBI MCLR of generating station,
emission control system or the integrated energy storage system, as the case may be – (A+B)"
5. In the Form-2, following rows shall be added after the row “ Details of SPM control system” in the table:
+-------------------------------------------------------------+---------+---------+---------+------+
| Particulars | Unit-I | Unit-II | Unit-III| .... |
+=============================================================+=========+=========+=========+======+
| Types of ESS (integrated) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Technology of ESS (Li-ion, odium-Sulfur, or Lead-acid) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Number of Battery Racks/Modules of ESS | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Number of Battery Cell in ESS | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Voltage capacity of Battery Cell (DC volt) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Operation mode (bi-directional or uni-directional | | | | |
| at interface point with the grid ) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Rated Capacity (MW) of ESS | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| 'Maximum continuous rating of ESS (MW) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Energy Capacity (MWh) of ESS | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
+--------------------------------------------------+---------+---------+----------+------+
| Particulars | Unit-I | Unit-II | Unit-III | .... |
+==================================================+=========+=========+==========+======+
| Voltage output of ESS | | | | |
| AC | | | | |
| DC | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Power Factor of ESSS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Round-Trip Efficiency of ESS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Response Time of ESS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| State of Charge (SoC) | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Cycle Life of ESS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| C-Rate of ESS | | | | |
| i) Charging | | | | |
| ii) Discharging | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Black Start Capability of ESS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
| Efficiency or Utilization factor (%) of ESS | | | | |
+--------------------------------------------------+---------+---------+----------+------+
6. In the Form-3, —
a) the title of the form "Normative parameters considered for tariff computations” shall be substituted by the words and
expressions "Normative parameters considered for computations of tariff, supplementary tariff of ECS or supplementary
tariff of ESS, as the case may be."
b) following rows shall be added after the row “ Transit and Handling Losses of coal or lignite or drawal, as applicable" in
the table:
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Particulars | Unit | Existing | 2024-25 | 2025-26 | 2026-27 | 2027-28 | 2028-29 | |
| | | 2023-24 | | | | | | |
+===================================+======+============+===========+===========+===========+===========+===========+===========+
| Round-Trip Efficiency | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Number of Cycles per day | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Total annual cycles | | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Availability of ESS (NAPAF) | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Auxiliary Energy Consumption of ESS | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Depth of Discharge (DoD) | | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Useful life of ESS | Years| | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
7. In the Form-A, —
a) the words "including emission control system or integrated energy storage system, as the case may be, “ shall be
added at the end of title of the form "Abstract of Capital Cost Estimates and Schedule of Commissioning for the New
Projects"
8. In the Form-B, —
a) the words "including emission control system or integrated energy storage system, as the case may be, “ shall be
added at the end of title;
b) following rows shall be added after the row “ 2.5 Control & Instrumentation (C & I) Package” in the table:
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| S. No. | Break Down | As per Original Estimates | Actual Capital | Liabilities/ | Variation | Specific Reasons for | Estimated Capital Expenditure |
| | | as per Investment Approval | Expenditure | Provisions | (3 - 4 - 5) | Variation | upto Cut-off dat |
| | | | as on COD6 | | | | |
+========+=======================================+==================================+===================+===================+===================+=======================+==================================+
| | | Actual Amount | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A | Specific Equipment of ESS | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A.1 | Battery Pack Cost | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A.2 | Power Conversion System (PCS) | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A.3 | AC-DC/DC-DC Coupling cost | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A.4 | Battery Management System (BMS) | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
| 2.5A.5 | Specific fire protection system | | | | | | |
+--------+---------------------------------------+----------------------------------+-------------------+-------------------+-------------------+-----------------------+----------------------------------+
9. In the Form-E, —
a) the words "including integrated energy storage system, as the case may be, “ shall be added at the end of title;
b) following rows shall be added after the row “ Type of Coal (Domestic/Imported)" in the table:
+--------+------------------------------------+--------------------------------+
| S. No. | Variables | (Design Operating Range) Values|
+========+====================================+================================+
| 25 | Battery/Module Supply | |
+--------+------------------------------------+--------------------------------+
| 26 | Power Conversion System (PCS) | |
+--------+------------------------------------+--------------------------------+
| 27 | Energy Management & Control for ESS| |
+--------+------------------------------------+--------------------------------+
Appendix-B
List of the amendments in the Tariff Filing Forms (Transmission) for the determination of the Tariff, Main Tariff
Form, Annexure- I, Part III of the Principal Regulations
1. The following rows shall be added in the Form-1 of Annexure-I(Part IIII) of the Principal Regulations
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| S. No. | Particulars | Form No. | 2024-25 | 2025-26 | 2026-27 | 2027-28 | 2028-29 | 2028-29 |
+========+==========================================+============+===========+===========+===========+===========+===========+===========+
| 2. | Summary of Supplementary Tariff (ESS) | | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.1 | Depreciation | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.2 | Interest on Loan | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.3 | Return on Equity¹ | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.4 | Interest on Working Capital | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.5 | O&M Expenses | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| | Total | Rs Lakh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 2.6 | Supplementary Capacity Charges (ESS) | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3 | Supplementary Energy Charges & Source of | | | | | | | |
| | Charging | | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.1 | Drawal from Inter-state grid (Name) | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.2 | Drawal from Intra-state grid (Name) | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.3 | Drawal from Generating Station 1 (Name) | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.4 | Open Market (Name of Platform/Traders) | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.5 | ... | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| 3.6 | ... | Rs per kWh | | | | | | |
+--------+------------------------------------------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
2. The following rows shall be added in the Form-2 of Annexure-I(Part IIII) of the Principal Regulations:
“3A. Integrated Energy Storage System:
+--------+----------+------------+----------------+-----------------+-----------------+------------------------------+----------------------------------+----------------------------------+----------------------------------+
| S. No. | Name of | Type of ESS| Installed | No of | No of | Date of | Capital Cost | Covered in the present Petition | |
| | ESS | | Capacity | Module | Battery | Commercial | upto Cutoff | Yes/No | If No, Petition No.|
| | | | | S | Cells | operation | date(Original Project cost) | | |
+========+==========+============+================+=================+=================+==============================+==================================+=================================+====================+
| 1 | | | | | | | | | |
+--------+----------+------------+----------------+-----------------+-----------------+------------------------------+----------------------------------+---------------------------------+--------------------+
| 2 | | | | | | | | | |
+--------+----------+------------+----------------+-----------------+-----------------+------------------------------+----------------------------------+---------------------------------+--------------------+
| 3 | | | | | | | | | |
+--------+----------+------------+----------------+-----------------+-----------------+------------------------------+----------------------------------+---------------------------------+--------------------+
| - | | | | | | | | | |
+--------+----------+------------+----------------+-----------------+-----------------+------------------------------+----------------------------------+---------------------------------+--------------------+
Summary
O& M Expenses for the Energy Storage System covered
in the instant petition
+-------------------------------------------------------------+-----------+-----------+-----------+-----------+-----------+
| | 2024-25 | 2025-26 | 2026-27 | 2027-28 | 2028-29 |
+=============================================================+===========+===========+===========+===========+===========+
| Original Project Cost / Asset related to the ESS | | | | | |
+-------------------------------------------------------------+-----------+-----------+-----------+-----------+-----------+
| O&M expenses as per regulations (2% of Original Project | | | | | |
| Cost) | | | | | |
+-------------------------------------------------------------+-----------+-----------+-----------+-----------+-----------+
| Actual O&M Expense (Rupees in Lakh)* | | | | | |
+-------------------------------------------------------------+-----------+-----------+-----------+-----------+-----------+
Plant Characteristics
+-------------------------------------------------------------+---------+---------+---------+------+
| Particulars | S/S I | S/S-II | S/S-III | .... |
+=============================================================+=========+=========+=========+======+
| Types of ESS (integrated) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Technology of ESS (Li-ion, odium-Sulfur, or Lead-acid) | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Number of Battery Racks/Modules | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
| Number of Battery Cell | | | | |
+-------------------------------------------------------------+---------+---------+---------+------+
+-------------------------------------------------------------+-------+--------+---------+------+
| Particulars | S/S I | S/S-II | S/S-III | .... |
+=============================================================+=======+========+=========+======+
| Voltage capacity of Battery Cell (DC volt) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Operation mode (bi-directional or uni-directional | | | | |
| at interface point with the grid ) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Rated Capacity (MW) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| 'Maximum continuous rating of ESS (MW) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Energy Capacity (MWh) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Voltage output | | | | |
| AC | | | | |
| DC | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Power Factor | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Round-Trip Efficiency | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Response Time | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| State of Charge (SoC) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Cycle Life | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| C-Rate | | | | |
| i) Charging | | | | |
| ii) Discharging | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Black Start Capability | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
| Efficiency or Utilization factor (%) | | | | |
+-------------------------------------------------------------+-------+--------+---------+------+
Note: 1. The O&M expenses as per regulation shall be worked on based on estimated project cost.
2. Expenses of ESS shall be allowed on actual basis after due prudence check.
*The actual O&M expenses to be provided at the time of true up.”
3. In clause (4) in the Form-2 of Annexure-I(Part IIII) of the Principal Regulations, the additional row “4. Integrated Energy
Storage System" shall be added.
4. In the Form-3, following rows shall be added in the table:
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Particulars | Unit | Existing | 2024-25 | 2025-26 | 2026-27 | 2027-28 | 2028-29 | |
| | | 2023-24 | | | | | | |
+===================================+======+============+===========+===========+===========+===========+===========+===========+
| B. Integrated ESS | | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Round-Trip Efficiency | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Number of Cycles per day | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Total annual cycles | | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Availability of ESS (NAPAF) | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Auxiliary Energy Consumption of ESS | % | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Depth of Discharge (DoD) | | | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
| Useful life of ESS | Years| | | | | | | |
+-----------------------------------+------+------------+-----------+-----------+-----------+-----------+-----------+-----------+
5. In the Form-5, the following rows shall be added in the table:-
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| S. No. | Particulars | (3) | | | (4) | | | (5) | | | (6) Portion Capital cost | (7) Projected/actual cost | (8) Variation between | (9) Reasons for | (10) Un-Discharge Liabilities | (11) Admitted cost | (12) Capital Work in Progress |
| | | Orig. Est.| | | Rev. Est. | | | Act. Cap. | | | not eligible for transmission| of Deferred work to be | actual Cost and IA/RCE | Variation¹ | included in Col. 5 | | as per Books of Account |
| | | | | | (if any) | | | Exp. (GB)| | | tariff | capitalised after COD but| cost as on COD | | | | as on COD |
| (1) | (2) | Qty. | Rate | Est. Cost | Qty. | Rate | Est. Cost | Qty. | Rate | Gross Block | | before cut-off date | (8=(5-6+7)-(3 or 4)) | | | | |
+========+==========================+==========+======+================+==========+======+================+==========+======+==========================+==============================+==================================+==================================+==========================+==================================+==========================+==================================+
| D | Energy Storage System | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 15 | Preliminary Works | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 15.1 | Energy Storage sys. equip. | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 15.2 | Taxes and Duties | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 15.3 | Total (ESS) | | | | | | | | | | | | | | | | |
| | (15.1+15.2+15.3) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 15.4 | Cost of Plant & | | | | | | | | | | | | | | | | |
| | Machinery (10.0+15.4) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 16 | Construction and pre- | | | | | | | | | | | | | | | | |
| | commissioning expenses | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 17 | Site supervision & site | | | | | | | | | | | | | | | | |
| | administration .etc. | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 17.1 | Tools and Plants | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 17.2 | construction Insurance | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 17.3 | Overheads | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| | Total Construction and | | | | | | | | | | | | | | | | |
| 17.4 | pre-commissioning expenses | | | | | | | | | | | | | | | | |
| | (17.1+17.2+17.3) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18 | Overheads | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18.1 | Establishment | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18.2 | Audit & Accounts | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18.3 | Contingency | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18.4 | Other overheads | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 18.5 | Total Overheads | | | | | | | | | | | | | | | | |
| | (18.1+18.2+18.3+18.4) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| | IDC, FC, FERV & | | | | | | | | | | | | | | | | |
| 19.1 | Hedging Cost | | | | | | | | | | | | | | | | |
| | Interest During | | | | | | | | | | | | | | | | |
| | Construction (IDC) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 19.2 | Financing Charges (FC) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 19.3 | Foreign Exchange Rate | | | | | | | | | | | | | | | | |
| | Variation (FERV) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| S. No. | Particulars | (3) | | | (4) | | | (5) | | | (6) Portion Capital cost | (7) Projected/actual cost | (8) Variation between | (9) Reasons for | (10) Un-Discharge Liabilities | (11) Admitted cost | (12) Capital Work in Progress |
| | | Orig. Est.| | | Rev. Est. | | | Act. Cap. | | | not eligible for transmission| of Deferred work to be | actual Cost and IA/RCE | Variation¹ | included in Col. 5 | | as per Books of Account |
| | | | | | (if any) | | | Exp. (GB)| | | tariff | capitalised after COD but| cost as on COD | | | | as on COD |
| (1) | (2) | Qty. | Rate | Est. Cost | Qty. | Rate | Est. Cost | Qty. | Rate | Gross Block | | before cut-off date | (8=(5-6+7)-(3 or 4)) | | | | |
+========+==========================+==========+======+================+==========+======+================+==========+======+==========================+==============================+==================================+==================================+==========================+==================================+==========================+==================================+
| 19.4 | Hedging Cost | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 19.5 | Total of IDC, FC, FERV | | | | | | | | | | | | | | | | |
| | & Hedging Cost | | | | | | | | | | | | | | | | |
| | (19.1+19.2+19.3+19.4) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
| 20 | Capital cost including | | | | | | | | | | | | | | | | |
| | IDC, FC, FERV & | | | | | | | | | | | | | | | | |
| | Hedging Cost | | | | | | | | | | | | | | | | |
| | (10+11.4+12.5+13.5+19.5) | | | | | | | | | | | | | | | | |
+--------+--------------------------+----------+------+----------------+----------+------+----------------+----------+------+--------------------------+------------------------------+----------------------------------+----------------------------------+--------------------------+----------------------------------+--------------------------+----------------------------------+
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