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Core Purpose

The Central Government notifies a new transmission scheme under TBCB mode, based on recommendations from the National Committee on Transmission and powers conferred by sub-para 3.2 of Para 3 of the Guidelines circulated under Section 63 of the Electricity Act, 2003.

Detailed Summary

The Ministry of Power, via Notification S.O. 3965(E) dated 28th August, 2025, has, in exercise of powers under sub-para 3.2 of Para 3 of the Guidelines circulated under Section 63 of the Electricity Act, 2003 (No. 36 of 2003) and on recommendations from the 30th National Committee on Transmission meeting, notified a transmission scheme under TBCB mode. The scheme, titled "Transmission system for evacuation of power from Rajasthan REZ Ph-IV (Part-5: 6 GW) [Barmer Complex] Barmer-II: 6 GW (Solar) (LCC Configuration)," has a tentative implementation timeframe of 54 months from project allocation, with Pole-1 in 48 months and Pole-2 in 54 months. REC Power Development and Consultancy Limited is designated as the Bid-Process Coordinator (BPC). The comprehensive scope includes the establishment of a 400/220 kV, 6x500 MVA Substation at Barmer-II with 2x125 MVAr bus reactors; a 10 km LILO of both circuits of 400 kV Fatehgarh-IV PS - Barmer-I PS at Barmer-II PS; a 30 km 400 kV Barmer-II PS - Barmer-I PS D/c line (Quad); the establishment of 6000 MW, 177800 kV HVDC terminal stations at Barmer-II and South Kalamb (each 4x1500 MW); and a ~900 km, 177800 kV HVDC Bipole line between Barmer-II (HVDC) and South Kalamb (HVDC), capable of evacuating 6000 MW. Additionally, the scheme involves the augmentation of South Kalamb S/s with 4x1500 MVA, 765/400 kV ICTs, 2x330 MVAR, 765 kV bus reactor, and 2x125 MVAR, 420 kV bus reactor on Section-II, including future network expansion for new 765 kV & 400 kV Bus Sections-II & III with additional ICTs and reactors, to be implemented within 24 months. Two Syncon units are also planned at the 400 kV level of Barmer-II PS, providing dynamic support of +300 MVAr/-200 MVAr (Minimum) and a short circuit contribution of 1200 MVA (Minimum). BPC appointment is subject to Ministry of Power Guidelines, and BPCs must ensure Right of Way (RoW) optimization as per CEA's Committee report dated 24.09.2024, with route finalization requiring validation on the PM Gati Shakti portal and physical survey.

Full Text

REGD. No. D. L.-33004/99 The Gazette of India CG-DL-E-30082025-265828 EXTRAORDINARY PART II-Section 3-Sub-section (ii) PUBLISHED BY AUTHORITY No. 3860] NEW DELHI, FRIDAY, AUGUST 29, 2025/BHADRA 7, 1947 MINISTRY OF POWER NOTIFICATION New Delhi, the 28th August, 2025 S.O. 3965(E).— In exercise of the powers conferred by sub-para 3.2 of Para 3 of the Guidelines circulated under Section 63 of the Electricity Act, 2003 (No. 36 of 2003), the Central Government, on the recommendations of 30th meeting of National Committee on Transmission, hereby notifies the following transmission scheme under TBCB mode, with details of respective Bid-Process Coordinator (BPC): - Sl No. Name & Scope of the Transmission Scheme 1. Transmission system for evacuation of power from Rajasthan REZ Ph-IV (Part-5: 6 GW) [Barmer Complex] Barmer-II: 6 GW (Solar) (LCC Configuration) Tentative implementation timeframe: 54 months from allocation of project (Pole-1: 48 months, Pole-2: 54 months) BPC: REC Power Development and Consultancy Limited Scope: +-----+-------------------------------------+---------------------------------------------------------+ | Sl. | Description of Transmission Element | Scope of work | | No. | | (Type of Substation/Conductor | | | | capacity/km/no. of bays etc.) | +-----+-------------------------------------+---------------------------------------------------------+ | 1. | Establishment of 400/220 kV, 6x500 MVA| • Barmer-II PS – AIS | | | S/s at suitable location near Barmer (Barmer-| • 400/220 kV 500 MVA ICTs- 6 Nos. | | | II Substation) along with 2x125 MVAr bus | • 400 kV ICT bays- 6 Nos. | | | reactor | • 220 kV ICT bays- 6 Nos. | | | | • 125 MVAr Bus Reactor-2 Nos. | | | Future provisions (excl. scope of present | • 400 kV Bus reactor bays- 2 Nos. | | | scheme): | • 400 kV line bays- 4 Nos. (for RE | | | | interconnection) | | | > 400 kV line bays along with | • 220 kV line bays – 7 Nos. (for RE connectivity) | | | switchable line reactor -6 | • 220 kV Sectionalization bay: 1 set | | | > 400 kV line bays – 4 Nos. | • 220 kV BC (2 Nos.) & TBC (2 Nos.) | | | > 400 kV Bus Reactor along with bays: 1 | • 400 kV sectionaliser bay- 1 Set | | | No. | | | | > 400/220 kV ICT along with bays- 4 | | | | Nos. | | | | > 400 kV Sectionalization bays: 2 sets| | | | > 220 kV line bays for connectivity of| | | | RE Applications - 5 Nos. | | | | > 220 kV Sectionalization bay: 2 sets| | | | > 220 kV BC (2 Nos.) & TBC (2 Nos.) | | | | > 2 Nos. of Syncon units* at 400 kV | | | | level along with 2 nos. of 400 kV bays| | | | > STATCOM (2x+300 MVAr, 4x125 | | | | MVAr MSC, 2x125 MVAr MSR) | | | | along with 400 kV bays (2 Nos.) | | | | | | | | *(1 No. of SynCon unit comprises dynamic | | | | support of +300 MVAr/ -200 MVAr | | | | (Minimum) & Short circuit contribution at | | | | PCC of 1200 MVA (Minimum)) (Value of | | | | inertia (MW-secs) shall be provided in RfP | | | | document)** | | +-----+-------------------------------------+---------------------------------------------------------+ | 2. | LILO of both ckts of 400 kV Fatehgarh-IV| • Line Length ~ 10 km (LILO length ~ 10 km) | | | PS - Barmer-I PS at Barmer-II PS | • 400 kV line bays- 4 Nos. (at Barmer-II PS end)| +-----+-------------------------------------+---------------------------------------------------------+ | 3. | 400 kV Barmer-II PS - Barmer-I PS D/c line| • Line Length ~30 km | | | (Quad) | • 400 kV line bays at Barmer-II PS – 2 Nos. | | | | • 400 kV line bays at Barmer-I PS S/s – 2 Nos. | +-----+-------------------------------------+---------------------------------------------------------+ | 4. | Establishment of 6000 MW, ± 800 kV | • HVDC terminal station (± 800 kV, 3000 MW | | | Barmer-II (HVDC) [LCC] terminal station | (Bipole configuration)- 2 nos.) | | | (4x1500 MW) at a suitable location near | • 400/33 kV, 2x50 MVA transformers for | | | Barmer-II substation | exclusively supplying auxiliary power to HVDC | | | | terminal | +-----+-------------------------------------+---------------------------------------------------------+ | 5. | Establishment of 6000 MW, ± 800 kV South| • HVDC terminal station (± 800 kV, 3000 MW | | | Kalamb S/s (HVDC) [LCC] terminal station | (Bipole configuration)- 2 Nos.) | | | (4x1500 MW) at a suitable location near | | | | South of Kalamb | | +-----+-------------------------------------+---------------------------------------------------------+ | 6. | ±800 kV HVDC Bipole line (Hexa lapwing)| • Line Length ~900 km | | | between Barmer-II (HVDC) & South | | | | Kalamb (HVDC) (with parallel Dedicated | | | | Metallic Return) (capable to evacuate 6000 | | | | MW) [with 100% reverse power capability] | | +-----+-------------------------------------+---------------------------------------------------------+ | 7. | Augmentation of South Kalamb S/s# by | • 765/400 kV 1500 MVA ICTs- 4 Nos. | | | 4x1500 MVA, 765/400 kV ICTs (3 on 400 | • 765 kV ICT bays- 4 Nos. | | | kV & 765 kV Section-II & 1 No. on 400 kV | • 400 kV ICT bays- 4 Nos. | | | & 765 kV Section-I) along with 2x330 | • 330 MVAr Bus Reactor-2 Nos. (at bus section- | | | MVAR, 765 kV bus reactor & 2x125 | II) | | | MVAR, 420 kV bus reactor on Section-II. | • 765 kV Bus reactor bays- 2 Nos. (at bus section- | | | The Section-II will be established under a | II) | | | different network expansion scheme in WR | • 125 MVAr Bus Reactor-2 Nos. (at bus section- | | | as per details given below* | II) | | | | • 400 kV Bus reactor bays- 2 Nos. (at bus section- | | | (2x1500 MW HVDC Bipole-I to be | II) | | | terminated on 400 kV Sec-I & 2x1500 MW | | | | HVDC Bipole-II to be terminated on 400 kV | | | | Sec-II of South Kalamb S/s & 765 kV bus | | | | sectionalizer to be kept normally closed & | | | | 400 kV bus sectionalizer to be kept normally | | | | open) | | +-----+-------------------------------------+---------------------------------------------------------+ | 8. | 2 Nos. of Syncon units at 400 kV level of | • Syncon units – 2 Nos. | | | Barmer-II PS | • 400 kV line bays – 2 Nos. | | | | | | | (1 No. of SynCon unit comprises dynamic | | | | support of +300 MVAr/-200 MVAr | | | | (Minimum) & Short circuit contribution at | | | | PCC of 1200 MVA (Minimum)) (Value of | | | | inertia (MW-secs) shall be provided in RfP | | | | document)** | | +-----+-------------------------------------+---------------------------------------------------------+ # South Kalamb S/s establishment with 2x1500 MVA, 765/400 kV ICTs with 2x330 MVAR, 765 kV bus reactor and 2x125 MVAR, 420 kV bus reactor alongwith LILO of Pune-III – Boisar-II 765 kV D/c line (presently under bidding stage). * Network Expansion Scheme: Creation of New 765 kV & 400 kV Bus Sections-II & III through 765 kV Sectionalization bay: 2 sets & 400 kV Sectionalization bay: 2 sets alongwith 2x330 MVAR, 765 kV bus reactor & 2x125 MVAR, 420 kV bus reactor on Section-III is being proposed along with ICT augmentation (3x1500 MVA, 765/400 kV ICTs) at Bus Section -III at both 765 kV & 400 kV levels alongwith downstream 400 kV lines at bus section-III from South Kalamb S/s with implementation timeframe of 24 months from effective date. [400 kV Sectionaliser between Sections-I & II & between sections-II & III to be normally open. Further, 765 kV sectionaliser between Sections-I & II & between II & III shall be kept normally closed. The 400 kV sectionalisers can be closed under contingency conditions.]. ** The above are as per discussions with OEMs and the under-excitation limit is as considered by the committee formed under Chairmanship of Member Secretary, NRPC along with members from CEA, NLDC, NRLDC, NTPC, BHEL, CTU and STUs to do futuristic analysis for requirement of Synchronous Condensers based on the inertia considerations for Northern Region 2. The appointment of the Bid Process Coordinator is subject to the conditions laid down in the Guidelines issued by Ministry of Power in this regard, amended from time to time. 3. BPCs shall ensure RoW optimization as per the CEA's Committee report dated 24.09.2024 for calculation of reduction of Right of Way (RoW) Width through Technological Options. 4. Further, the route must be finalised after validation on PM Gati Shakti portal and physical survey. [F. No. 15/3/2018- Trans- Part(4)] NAOREM INDRAKUMAR SINGH, Under Secy. (Transmission)

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