PTC India, an India-based power trading company, wants to buy power from 500 MW/2,000 MWh of co-located BESS projects on a long-term basis and has asked developers in India to send in expressions of interest (EOI). Its EOI is dated 21 September 2026. The company says that it is testing market interest, and that it may go on to sign bilateral PPAs with the most competitive sources.

The company wants dispatchable peak power and storage services that it can supply to identified consumers through bilateral arrangements. Each system must have a minimum storage duration of four hours and be able to supply 4 MWh for every 1 MW of contracted capacity each day. PTC India will choose the four hours of supply from peak hours that run from the evening non-solar hours to the non-solar hours of the following morning.

Each developer gets one bid, which also covers its parent and group companies. Bids start at 50 MW/200 MWh and rise in steps of that size up to the full 500 MW/2,000 MWh. To qualify, a BESS or renewable energy developer has to be registered in India and may apply alone or in a consortium. It also needs at least 50 MW/100 MWh of BESS, solar, wind, hybrid or other renewable plants already running, in India or abroad. The net worth requirement is INR 1 crore per MW. Only entities that hold, or have applied for, connectivity or general network access (GNA) with a start date on or before 30 June 2028 are eligible.

Projects can be located anywhere in India and are to connect to the inter-state transmission system (ISTS) at a minimum of 220 kV, and the developer pays for connectivity. All of the energy supplied each year is to come from renewable sources, of which up to 5% may be sourced through green market sources. Outside peak hours, developers may use the storage for other applications, including third-party and power exchange sales. A shortfall in peak supply attracts a penalty of 1.5 times the PPA tariff.

The PPAs would be valid for 25 years from the scheduled commencement of supply date, which falls 18 months after the effective date of the PPA. Selected bidders are to submit a performance bank guarantee of INR 25 lakh per MW before signing. Developers have until 5 October 2026 to ask for clarifications and until 21 October 2026 to send in their EOI.

PTC India used to be called Power Trading Corporation of India. It was set up in 1999 as a Government of India initiated company, with NTPC, PGCIL, PFC and NHPC as co-promoters. It holds a Category I trading licence from the Central Electricity Regulatory Commission.