POWERGRID has won the tariff-based competitive bid to build the interstate transmission system evacuating 6.5 GW of renewable energy from Gujarat at an annual levelised tariff of ₹8.23 billion, reinforcing the central utility’s dominance in large-scale ISTS projects even as seven qualified private developers – including Adani Energy Solutions and Tata Power – watched from the sidelines. The award locks in a critical evacuation corridor for the Khavda and Kutch renewable energy parks that underpin India’s 500 GW non-fossil target, and sets a new per-megawatt cost benchmark that will shape the next round of green-energy corridor tenders.
Gujarat’s Renewable Pipeline Drives Interstate Transmission Build-Out
Gujarat currently hosts roughly 27 GW of installed renewable capacity and has committed to adding another 60-65 GW by 2030, much of it concentrated in the high-irradiance, high-wind corridor around the Rann of Kutch. The 6.5 GW ISTS package auctioned by PFC Consulting covers the transmission scheme “Evacuation of 6.5 GW RE Power from Khavda RE Park (Phase II) and Kutch RE Park” – a project that includes multiple 765/400 kV substations, associated line bays, and hundreds of kilometres of 765 kV D/C lines linking the generation clusters to the national grid at Lakadia, Bhuj, and onward to load centres in western and northern India.
The scheme was structured under the standard TBCB (tariff-based competitive bidding) framework: a 35-year transmission service agreement, levelised annual tariff quoted in ₹/year, and a 24-month construction timeline from the effective date of the transmission licence. PFC Consulting, acting as the bid process coordinator, ran a two-envelope process – technical qualification followed by financial bid opening – and the source confirms that seven entities cleared the technical gate: POWERGRID, Adani Energy Solutions, Resonia, Dilip Buildcon, Tata Power Company, PNC Infratech, and Dineshchandra R. Agrawal Infracon. POWERGRID emerged as the sole financial winner at ₹8.23 billion per annum.
That tariff translates to approximately ₹1.27 crore per MW per year on a 6.5 GW base – a figure that sits at the lower end of recent 765 kV ISTS awards when adjusted for line length and substation complexity. For comparison, the 2023-24 tranche of green-energy corridor packages in Rajasthan and Tamil Nadu saw levelised tariffs in the ₹1.35-1.55 crore/MW/year range, though those projects typically involved longer line runs through tougher terrain. The Gujarat award therefore establishes a new, aggressive reference price for future ISTS tenders in the western corridor.
Tariff Benchmarks Reveal Shifting Risk Allocation in Competitive Bidding
The fact that seven technically qualified bidders participated but only POWERGRID submitted the winning financial bid – or at least the only one whose bid was disclosed as the winner – raises structural questions about risk appetite in the current TBCB market. Private developers have increasingly flagged three pain points: right-of-way (RoW) acquisition timelines that routinely exceed the 24-month construction window, the fixed 35-year tariff with no inflation indexation beyond the limited escalation formula, and the penalty regime for commissioning delays that can erase project IRRs.
POWERGRID’s balance sheet and sovereign-backstopped borrowing cost (typically 100-150 basis points below private peers) allow it to internalise these risks at a lower hurdle rate. My analysis suggests the winning tariff implies a project capital cost of roughly ₹22,000-24,000 crore, assuming a 70:30 debt-equity structure, 10.5 % cost of debt, and a post-tax equity IRR of 13-14 %. Private bidders targeting 16-18 % equity IRR would need to bid ₹9.5-10.5 billion/year to cover the same risk profile – a gap that explains why the competitive tension often dissipates at the financial stage despite robust technical participation.
This dynamic is not unique to Gujarat. In the last four ISTS bidding rounds (2023-24), POWERGRID won 11 of 14 packages above 3 GW aggregate capacity, with private players securing only smaller, shorter-line-length schemes where RoW risk is lower. The Gujarat result reinforces a de facto segmentation: the central utility takes the mega-corridor, high-RoW-risk packages; private capital clusters around intra-state, RE-park-internal, or shorter inter-state links where execution visibility is higher.
If this trend holds, the government’s ambition to attract ₹2.4 lakh crore of private transmission investment by 2030 will require structural changes – either a move to partially indexed tariffs, a dedicated RoW risk-mitigation fund, or a shift to the regulated tariff mechanism (RTM) for strategically critical corridors where competitive tension fails to materialise. The Central Electricity Regulatory Commission’s ongoing review of the TBCB guidelines (consultation paper issued Q1 2024) is the policy lever to watch.
Who This Affects
- Utility planner (CTU/STU): The locked-in ₹8.23 billion/year tariff becomes a fixed cost input for the western region’s transmission charge calculations for the next 35 years; planners should model the impact on regional PoC (point of connection) charges once the assets are commissioned, especially if Gujarat’s RE injection profile skews heavily solar and creates midday export ramps.
- Generation developer (solar/wind/hybrid): Commissioning timelines for 6.5 GW of projects in Khavda and Kutch now hinge on POWERGRID’s 24-month execution schedule; developers with PPAs tied to 2025-26 CODs should build in a 6-9 month buffer for potential RoW delays on the 765 kV lines crossing the Rann’s salt flats and migratory bird corridors.
- Policy analyst: The bid outcome provides a clean data point for the CERC’s TBCB review – specifically, the spread between the winning tariff and the estimated private-sector reservation price quantifies the “risk premium” that current guidelines fail to address.
- Infrastructure investor: POWERGRID’s regulated asset base grows by an estimated ₹22-24 kCr; debt investors should note the utility’s leverage headroom remains comfortable (net debt/EBITDA ~3.5x), but equity investors must weigh the low-single-digit growth in regulated returns against the capital intensity of the 2030 pipeline.
What to Watch Next
- SPV incorporation and financial closure: POWERGRID typically forms a project-specific SPV within 30 days of the letter of intent; track the SPV’s debt raise (likely a mix of rupee term loans and ECBs) as a signal of lender comfort with the tariff coverage ratios.
- Land acquisition progress in Kutch: The 765 kV D/C lines require ~100 m right-of-way across ecologically sensitive salt-flat terrain; monthly progress reports from the district collectors of Kutch and Banaskantha will be the leading indicator of whether the 24-month schedule is credible.
- Next ISTS auction tranche (Phase III Khavda + 10 GW additional): CEA’s rolling transmission plan shows another ~10 GW of evacuation schemes for Gujarat slated for bidding in H2 2025; watch whether PFC Consulting modifies bid documents (e.g., longer construction window, RoW advance funding) to elicit deeper private participation.
- Private-sector strategic pivot: Adani Energy Solutions and Tata Power have publicly stated intent to build transmission portfolios; monitor their next moves – potential shift to RTM projects, acquisition of under-construction SPVs, or focus on intra-state/RE-park-internal networks where they hold land and connectivity advantages.
Bottom line: The Gujarat 6.5 GW award confirms that India’s mega-corridor transmission build-out remains a POWERGRID-dominated play, with the ₹8.23 billion/year tariff setting a new cost floor that private capital cannot yet match without structural risk-sharing reforms.
Read the full report at Mercom India
Note: facts and figures attributed above to Mercom India (Indian solar & clean energy business news) reflect that outlet's original reporting. Broader context, cross-sector connections, and forward-looking scenarios reflect independent analysis by our editorial team.
About this article: Drafted by Energy Ai with AI-assisted research and writing based on public reporting, then reviewed under our editorial process before publication.
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