The Solar Energy Corporation of India (SECI), the sole renewable energy implementing agency, has 9,675 MW of unsold renewable energy capacity under several auctions, according to its latest update.

SECI is yet to find offtakers for 10 interstate transmission system (ISTS)-connected auctions spanning solar-plus-storage, solar, wind-solar, manufacturing-linked solar projects, wind-solar hybrid, and firm and dispatchable renewable energy (FDRE) projects.

Across all categories, tariffs have been determined through competitive bidding, with SECI’s trading margin of ₹0.07 (~$0.0007)/kWh applied to the discovered tariff.

Most projects have a 24-month commissioning period from the effective date of the power purchase agreement.

Since its last listing of unsold capacity in March this year, SECI has found takers for 425 MW.

Under its Tranche XXI solar-plus-battery storage auction, conducted in January 2026, SECI is yet to find takers for the entire 1,200 MW capacity.

The available capacity includes 600 MW from NLC India Renewables and 200 MW from Engie Energy India, each at a tariff of ₹3.12 (~$0.033)/kWh. It also includes 300 MW from RPIL Power Three and 100 MW from Oriana Power at a tariff of ₹3.13 (~$0.033)/kWh.

SECI is also yet to find any offtakers for its 600 MW Tranche IX wind-solar hybrid auction held in October 2024 and its 1.2 GW ISTS-connected Tranche VIII wind-solar hybrid auction held in June 2024. Juniper Green Energy has 150 MW, and ACME Solar Holdings has 300 MW at a tariff of ₹3.25 (~$0.034)/kWh, while Sembcorp Green Infra has 150 MW at a tariff of ₹3.26 (~$0.034)/kWh.

Under the 1.2 GW Tranche VIII wind-solar hybrid auction, JSW Neo Energy has 300 MW, Adyant Enersol has 60 MW, AMPIN Energy has 150 MW, and Asurari Renewables India has 300 MW, each at a tariff of ₹3.45 (~$0.036)/kWh. Juniper Green Energy has 150 MW at a tariff of ₹3.43 (~$0.036)/kWh, and Avaada Energy has 240 MW at a tariff of ₹3.46 (~$0.036)/kWh.

SECI is also yet to secure offtakers for 1,700 MW of the awarded capacity under its 2 GW Tranche XX solar-plus-storage auction. MB Power has 150 MW of available capacity; Shivalaya Construction has 600 MW; Oswal Cables has 50 MW; Purvah Green Power has 300 MW; LC Infra Projects has 50 MW; and Stockwell Solar Services has 80 MW, all at a tariff of ₹2.86 (~$0.030)/kWh.

There is also a stranded capacity of 300 MW from SAEL Industries, 50 MW from GH2 Solar, and 120 MW from Navayuga Green Energy, each at a tariff of ₹2.87 (~$0.030)/kWh, all from the same auction.

Under the 1.2 GW Tranche XV solar-plus-storage auction, JSW Neo Energy’s 500 MW capacity was awarded at a tariff of ₹3.42 (~$0.036)/kWh and has remained stranded since the auction concluded in July 2024.

In SECI’s 1.5 GW Tranche XIV solar auction, 600 MW of capacity is available, comprising 300 MW each from Avaada Energy and ReNew Solar Power at a tariff of ₹2.57 (~$0.027)/kWh.

Under the 7 GW manufacturing-linked solar auction, 2,366 MW of capacity is available, comprising 250 MW from Azure Power at a tariff of ₹2.54 (~$0.026)/kWh, 317 MW from Azure Power India, and 1,799 MW from Adani Green Energy Four each at a tariff of ₹2.42 (~$0.025)/kWh. The capacity has been pending since 2019, when the auction was held.

Under the 1.2 GW Tranche VI wind-solar hybrid auction, the total stranded capacity is 410 MW, comprising 50 MW from AMP Energy Green at a tariff of ₹4.64 (~$0.049)/kWh, 300 MW from ReNew Vikram Shakti at a tariff of ₹4.69 (~$0.049)/kWh, and 60 MW from Hero Solar Energy at a tariff of ₹4.72 (~$0.050)/kWh. The auction was held in April 2023.

SECI is also yet to find offtakers for its FDRE auctions. It has 200 MW of available capacity from Altra Xergi Power at a tariff of ₹8.1 (~$0.085)/kWh under its 8 GWh Tranche VI FDRE auction and 899 MW from its 1.2 GW Tranche VII FDRE auction.

Under the 1.2 GW Tranche VII FDRE auction, SECI has 100 MW of available capacity from Adyant Enersol at a tariff of ₹6.27 (~$0.066)/kWh. It also has 600 MW from Serentica Renewables India and 199 MW from AMPIN Energy Utility Nine, each at a tariff of ₹6.28 (~$0.066)/kWh.