Central Electricity Regulatory Commission (CERC) has adopted the transmission tariff with respect to the ISTS scheme being developed by Sirohi Transmission Ltd.
In a very recent order, CERC adopted the tariff (annual transmission charge) of Rs.2,908.53 million per year of Sirohi Transmission, a wholly-owned subsidiary of Power Grid Corporation of India Ltd (PGCIL).
Sirohi Transmission won an ISTS scheme known as “Transmission system for evacuation of power from Rajasthan REZ Ph-IV (Part 2: 5.5 GW) (Jaisalmer/Barmer Complex) Part B” under the tariff-based competitive bidding (TBCB) mechanism.
The adoption of tariff is subject to grant of transmission licence to Sirohi Transmission Ltd by CERC.
Bidding process
During the bidding process, PGCIL was contending for the project alongside Sterlite Power and Adani Energy Solutions Ltd (AESL). PGCIL was L1 based on initial price bids with a quote of Rs.3,255.50 million. Sterlite Power and AESL were L2 and L3, respectively.
At the end of the e-reverse auction (e-RA), PGCIL continued to be L1 with a final bid of Rs.2,908.53 million, followed by Sterlite Power (L2: Rs.2,915.82 million) and AESL (L3: Rs.3,104.25 million).
Thus, it can be seen that the final winning bid of PGCIL was 11 per cent lower than its initial bid.
Project details
The ISTS scheme under Sirohi Transmission Ltd mainly involves setting up of the following infrastructure:
- A 2×1500 MVA, 765/400kV substation near Sirohi (Rajasthan)
- A 765kV double-circuit line connecting above Sirohi pooling station to Section-2 of Fatehgarh-IV pooling station (route length: 240 km)
- A 400kV double-circuit line connecting above Sirohi pooling station to Chittorgarh substation of PGCIL (route length: 160 km)
The project is estimated to cost Rs.3,279 crore and is scheduled for completion by August 2026. This scheme will contribute around 800 ckm of transmission lines and 3,000 MVA of substation capacity to the ISTS network.
Other components
It may be mentioned that the overall scheme “Transmission system for evacuation of power from Rajasthan REZ Ph-IV (Part 2: 5.5 GW) (Jaisalmer/Barmer Complex)” will be implemented under several components using a mixture of TBCB and RTM routes. All the project components are expected to commission concurrently, which is by August 2026.
Of the seven TBCB components – Part A, Part B, Part C, Part D, Part E, Part F1 & F2, and Part H1 – PGCIL has won six. The only non-PGCIL winner is Apraava Energy that has landed Part A, housed under “Rajasthan IV A Power Transmission Ltd.”
Also read: CERC grants transmission licence to Kallam Transco
Featured photograph is for representation only
