Follow India Renewable Energy News on WhatsApp for exclusive updates on clean energy news and insights

NVVN Invites Bids for 250 MW/1,000 MWh ISTS-Connected BESS Projects

NTPC Vidyut Vyapar Nigam (NVVN) has issued a request for selection (RFS) for developers to set up 250 MW/1,000 MWh interstate transmission system (ISTS)-connected standalone battery energy storage systems (BESS) under a build-own-operate (BOO) model. The project includes a greenshoe option for an additional 250 MW/1,000 MWh capacity.

Bid Details & Timeline

Bid Submission Deadline: March 24, 2025

Bid Opening Date: March 25, 2025

Earnest Money Deposit (EMD): Rs 0.14 crore

Project Scope & Requirements

Setting up the BESS system with a four-hour discharge capacity (250 MW x 4 hours = 1,000 MWh)

Charging power must preferably come from renewable energy sources

Integration with the ISTS for seamless transmission across India

Key Commercial Aspects

On-Demand Energy Supply: The BESS will provide energy to NVVN during peak and off-peak hours

Compensation for Power Offtake Issues: If NVVN is unable to offtake power, it will compensate developers for 52.88% of the discovered energy tariff

Penalties for Low System Availability: Developers will face liquidated damages twice the composite discharge value for any shortfalls in system availability

Bid Eligibility & Capacity Allocation

Minimum Bid Size: 200 MWh (50 MW x 4 hours)

Maximum Bid Size: 500 MWh (125 MW x 4 hours)

Additional Allocation: NVVN may tie up extra capacity up to 250 MW/1,000 MWh under the greenshoe option

Eligibility:

Projects already commissioned are NOT eligible

Projects under construction or not yet commissioned are eligible—provided they are not tied to any other central or state program

This large-scale energy storage initiative aligns with India's efforts to enhance grid stability and integrate renewable energy into the power network.