Full Text
REGD. No. D. L.-33004/99
The Gazette of India
CG-DL-E-14082025-265305
EXTRAORDINARY
PART III—Section 4
PUBLISHED BY AUTHORITY
No. 544]
NEW DELHI, WEDNESDAY, AUGUST 6, 2025/SHRAVANA 15, 1947
CENTRAL ELECTRICITY REGULATORY COMMISSION
NOTIFICATION
ERRATA
New Delhi, the 25th July, 2025
F. No. L-1/250/2019/CERC.—The Central Electricity Regulatory Commission (Sharing of Inter-
State Transmission Charges and Losses) (Fourth Amendment) Regulations, 2025 (Notification No.
L-1/250/2019/CERC dated 26.06.2025) were published in Part-III, Section 4, No. 472 of the Gazette of
India Extraordinary on 02.07.2025. The following corrections are made in the English version of the
aforesaid Gazette:
1. The English version on Pages No. 7 to 12 shall be read as under:
“CENTRAL ELECTRICITY REGULATORY COMMISSION
NOTIFICATION
New Delhi, the 26th June, 2025
F. No. L-1/250/2019/CERC— In exercise of the powers conferred under Section 178 read with
Part V of the Electricity Act, 2003 (36 of 2003), 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 (Sharing of Inter-State Transmission
Charges and Losses) Regulations, 2020 (hereinafter referred to as “the Principal Regulations") namely:
1. Short Title and Commencement:
(1) These regulations may be called the Central Electricity Regulatory Commission (Sharing of Inter-State
Transmission Charges and Losses) (Fourth Amendment) Regulations, 2025.
(2) These regulations shall come into effect from the date of publication in the official Gazette.
2. Amendment to Regulation 2 of the Principal Regulations:
(1) New Sub-clauses (aa-i) and (aa-ii) shall be included after subclause (aa) of Regulation 2 of the Principal
Regulations as under:
"(aa-i) 'Tariff Regulations' means the Central Electricity Regulatory Commission (Terms and Conditions of
Tariff) Regulations, 2024, as amended from time to time;
(aa-ii) 'Terminal Bay' shall have the same meaning as defined in the GNA Regulations;"
3. Amendment to Regulation 9 of the Principal Regulations:
(1) First proviso to Regulation 9(8) of the Principal Regulations shall be substituted as under:
"Provided that drawee DICs (other than the distribution licensees of the State) located within the State
control area, and having obtained separate GNA, which are not included in the GNA of the distribution
licensees of the State, shall be apportioned the transmission charges out of the aggregate AC-UBC charges
for the State in proportion to their GNA."
4. Amendment to Regulation 12 of the Principal Regulations:
(1) Two new Provisos shall be added after the third Proviso of sub-clause (a) of Clause (1) of Regulation 12 of the
Principal Regulations as under:
"Provided also that for a Generating Station having dual connectivity to both inter-State transmission system
and intra-State transmission system, the transmission deviation shall be computed as net metered ex-bus
injection, in a time block in excess of the sum of 'GNA to the inter-State transmission system and Access
with STU system';
Provided also that the details of Access with STU shall be shared by STU with NLDC and CTU."
5. Amendment to Regulation 13 of the Principal Regulations:
(1) The words "or (iv) REGS based on Offshore wind" shall be inserted after the words "(iii) generation based on
hydro power sources" in Clause (2) of Regulation 13 of the Principal Regulations.
(2) The sub-clauses (a) and (b) of Clause (2) of Regulation 13 of the Principal Regulations shall be substituted as
under:
"(a) REGS or RHGS based on wind or solar source or a combination of wind and solar source shall be eligible
for the grant of waiver as per Table 1 below:
Table 1: REGS or RHGS
Category | Period of COD | Number of | % of drawal Schedule
| | years from| from identified generating
| | COD | station, to be considered
| | | under Annexure-III
--------------------------+-----------------------------+-----------+-----------------------------
REGS based on wind or | On or before 30.6.2025 | 25 years | 100
solar source, or RHGS | 1.7.2025 to 30.6.2026 | 25 years | 75
based on wind and solar | 1.7.2026 to 30.6.2027 | 25 years | 50
source | 1.7.2027 to 30.6.2028 | 25 years | 25
| After 30.6.2028 | | 0
(b) ESS shall be eligible for the grant of waiver as below and shall be subject to conditions as per sub-clause
(c) of this Clause:
(i) Hydro PSP ESS, for which construction work has been awarded on or before 30.6.2028, shall be eligible
for a waiver of transmission charges for a period of 25 years from the COD.
Explanation: When such Hydro PSP is supplying power to a drawee DIC,100% of the drawal schedule for
the drawee DIC from such Hydro PSP shall be considered under Annexure-III for the calculation of waiver.
(ii) Battery ESS shall be eligible for grant of waiver as per Table 2 below:
Table 2: Battery ESS
S. No. | Category | Period of COD | Number of | % of drawal
| | | years from| Schedule for
| | | COD | drawee DIC when
| | | | seller is ESS, to be
| | | | considered under
| | | | Annexure-III
-------+---------------------------------------------+-------------------------+-----------+-----------------
1. | Battery ESS connected at a substation | On or before 30.6.2028 | 12 years | 100
| where REGS is connected and is | | |
| charged from such REGS | | |
2. | Battery ESS connected at a substation | On or before 30.6.2025 | 12 years | 100
| where no REGS is connected, or | | |
| Battery ESS connected at a substation | 1.7.2025 to 30.6.2026 | 12 years | 75
| where REGS is connected but Battery | | |
| ESS is charged from Grid or source | 1.7.2026 to 30.6.2027 | 12 years | 50
| other than REGS or any other battery | | |
| ESS not covered under S.No.1 of this | 1.7.2027 to 30.6.2028 | 12 years | 25
| Table. | | |
| | After 30.6.2028 | NA | 0
Provided that Battery ESS, which is covered under S. No. 1 of Table 2, is required to be charged from such
REGS which is connected at the same substation, may charge its Battery ESS from the Grid under
contingency, subject to GNA Regulations and Grid Code and subject to the condition that energy drawal
from grid under such contingency (ies) in a year, shall not exceed 10% of total energy requirement in a year
for charging the Battery ESS:
Provided also that for the purpose of these regulations, REGS collocated with Battery ESS and installed
only for the purpose of charging such ESS with no additional connectivity quantum at the ISTS substation
shall also qualify such Battery ESS under S.No.1 of Table 2.”
(3) The sub-clauses (e) and (f) of Clause (2) of Regulation 13 of the Principal Regulations shall be substituted as
under:
“(e) Hydro generating station shall be eligible for the grant of waiver as per Table 3 below:
Table 3: Hydro Generating Stations
Date of signing of PPA and award of | Number of years from COD | % of drawal Schedule
construction work | | from the hydro generating
| | station, to be considered
| | under Annexure-III
------------------------------------+--------------------------+-----------------------------
On or after 1.12.2022 and On or before| 18 years | 100%
30.6.2025 | |
1.7.2025 to 30.6.2026 | 18 years | 75
1.7.2026 to 30.6.2027 | 18 years | 50
1.7.2027 to 30.6.2028 | 18 years | 25
After 30.6.2028 | NA | 0
The date for eligibility for waiver shall be considered as of the date of signing of the PPA or award of
construction work, whichever is later.
(f) Waiver for REGS based on Offshore Wind or Green hydrogen or Green Ammonia Plants shall be calculated
in terms of Table 4 and Table 5 below:
Table 4: REGS based on Offshore Wind:
Period of COD | Number of years from | % of drawal Schedule from
| COD | offshore wind generating
| | station, to be considered
| | under Annexure-III
------------------------+----------------------+-----------------------------
On or before 31.12.2032 | 25 years | 100
01.01.2033 to 31.12.2033| 25 years | 75
01.01.2034 to 31.12.2034| 25 years | 50
01.01.2035 to 31.12.2035| 25 years | 25
After 31.12.2035 | NA | 0
Table 5: Waiver of transmission charges for the use of ISTS for Green Hydrogen or Green Ammonia
Plant as a drawee DIC:
Period of COD | Number of years from | % of drawal Schedule for
(1) | COD | such plants as a drawee DIC,
| (2) | to be considered under
| | Annexure-III
| | (3)
------------------------+----------------------+-----------------------------
Upto 31.12.2030 | 25 years | 100
01.01.2031 to 31.12.2031| 25 years | 75
01.01.2032 to 31.12.2032| 25 years | 50
01.01.2033 to 31.12.2033| 25 years | 25
After 01.01.2034 | 0
As a drawee DIC, a Green Hydrogen or Green Ammonia Plant having drawal schedule from (i) REGS or
RHGS based on wind (including off shore wind) or solar source, (ii) ESS which is meeting at least 51% of its
annual electricity requirement for pumping of water or charging of battery with electricity generated from
REGS or RHGS based on wind or solar source and (iii) Hydro generating station, shall be eligible to waiver
considering drawal schedule as per Table 5 or as per Tables 1 to 4 and sub-clause (b)(i) and (d) of Clause (2)
of this Regulation, whichever is higher.
Illustration:
(i) A Green Hydrogen plant ‘G1', which declares COD on 01.01.2032 (eligible for 50% waiver as per Table
5), is scheduling power from a REGS based on wind source 'W1', which has declared commercial operation
on 01.07.2025 (eligible for 75% waiver under Table 1). In this case, the drawal schedule from such REGS to
such Green Hydrogen plant will be considered @ 75% under Annexure-III. While calculating waiver for
consumption of RE generation by G1 in year 2052, the period of waiver for W1 has already expired as on
2050, suppose G1 takes RE power from another generation project which has declared COD in year 2030 or
it takes from W1 (supposing life of W1 got extended), the applicable waiver for G1 shall be 50%.
(ii) A Green Hydrogen plant, which declares COD on 01.01.2030, is scheduling power from a REGS based
on a wind source, which has declared commercial operation on 01.07.2027. In this case, the drawal schedule
from such REGS to such Green Hydrogen plant will be considered @ 100% under Annexure-III.”
(4) New sub-clauses (h) and (i) shall be inserted after sub-clause (g) under Clause (2) of Regulation 13 of the
Principal Regulations as under:
“(h) Any REGS based on wind or solar source or RHGS based on combination of wind and solar source
or Battery ESS which is eligible for a waiver of inter-state transmission charges under Regulation 13(2) of
these regulations and is having its scheduled date of commercial operation (SCOD) on or before 30th June
2025 is granted extension of time to achieve commercial operation date (COD) on account of any Force
Majeure event including non-availability of transmission system or for reasons not attributable to the
REGS, and the project achieves COD on or before the extended date, it shall be eligible for a waiver of
inter-state transmission charges as if the said REGS had achieved COD on 30.6.2025. Such extension to
achieve SCOD for the purpose of this Regulation shall not exceed a period of six months at a time and not
more than two times, where the extension provided is for a period beyond 30.06.2025. Such extension
shall be granted by:
(i) Renewable Energy Implementing Agency or a distribution licensee or an authorized agency on
behalf of a distribution licensee or MNRE as per the competent authority in terms of the Power
Purchase Agreements, where PPA has been entered into consequent to tariff based competitive
bidding, under Section 63 of the Act.
(ii) Commission based on recommendations of Committee to be appointed by the Commission, for
cases other than covered in sub-clause (i) of this Clause. For the purpose of seeking such
extension, the concerned generation project or ESS shall file an application to the Committee as
notified through a separate Order by the Commission.
(i) For the purpose of monthly transmission charges by NLDC, the requirement of subclause (c) and (f) of
this Regulation for ESS regarding meeting 51% of its annual electricity requirement for pumping of water or
charging of battery with electricity generated from REGS or RHGS based on wind or solar source shall be
taken based on self-declaration by the entity claiming such waiver. After completion of the financial year, it
shall be verified by NLDC whether the 51% criteria have been met, failing which revised bills for
transmission charges shall be raised, considering no waiver for such entity.”
(5) The second Proviso of Clause (3) of Regulation 13 of the Principal Regulations shall be substituted as
follows:
"Provided further that where the Terminal Bay(s) at the ISTS sub-station in the scope of the transmission
licensee have achieved COD and the COD of a Connectivity grantee (COD of generation capacity within
the Renewable Power Park in case Connectivity Grantee is Renewable Power Park Developer) has been
achieved, on or before start date of Connectivity of the Connectivity Grantee, the Connectivity Grantee
shall pay Yearly Transmission Charges for the Terminal Bay(s) corresponding to the Connectivity capacity
which has not achieved COD:
Provided also that Yearly Transmission Charges in respect of the Associated Transmission System and
terminal bay(s) corresponding to the Connectivity capacity that have achieved COD shall be included for
determination of transmission charges of DICs in accordance with Regulations 5 to 8 of these regulations.”
(6) The words 'Associated Transmission System' occurring multiple times shall be replaced with the words
'Associated Transmission System and Terminal bay(s)' in Clause (6) of Regulation 13 of the Principal
Regulations.
(7) New Clauses (14) and (15) shall be added after Clause (13) of Regulation 13 of the Principal Regulations as
under:
“(14) Availability of the Transmission System
Notwithstanding any provisions to the contrary in the Transmission Service Agreement under tariff based
competitive bidding, the Transmission System Availability Factor of a transmission system or an element
thereof shall be calculated as specified in the relevant Tariff Regulations.
(15) For the purpose of billing under Clauses (1) to (12) of Regulation 13 of these regulations, where the Yearly
Transmission Charges of corresponding elements are not available, the Yearly Transmission Charges for such
elements shall be worked out and provided by the Central Transmission Utility, apportioning Yearly
Transmission Charges approved by the Commission for the integrated project, based on indicative capital cost.”
HARPREET SINGH PRUTHI, Secy.
[ADVT.-III/4/Exty.277/2025-26]
Note:
(1) The Central Electricity Regulatory Commission (Sharing of Inter-State Transmission Charges and Losses)
Regulations, 2020 were published on 01.07.2020 in Part III, Section 4 of the Gazette of India (Extraordinary)
No. 243.
(2) The Central Electricity Regulatory Commission (Sharing of Inter-State Transmission Charges and Losses)
(First Amendment) Regulations, 2023 were published on 01.03.2023 in Part III, Section 4 of the Gazette of India
(Extraordinary) No 149.
(3) The Central Electricity Regulatory Commission (Sharing of Inter-State Transmission Charges and Losses)
(Second Amendment) Regulations, 2023 were published on 27.10.2023 in Part III, Section 4 of the Gazette of
India (Extraordinary) No 733.
(4) The Central Electricity Regulatory Commission (Sharing of Inter-State Transmission Charges and Losses)
(Third Amendment) Regulations, 2023 were published on 27.10.2023 in Part III, Section 4 of the Gazette of India
(Extraordinary) No 734."
Uploaded by Dte. of Printing at Government of India Press, Ring Road, Mayapuri, New Delhi-110064
and Published by the Controller of Publications, Delhi-110054.