NTPC Green Energy (NGEL) has invited bids for the engineering, procurement, and construction (EPC) of a 50 MW/200 MWh grid-connected battery energy storage system at Jhansi in Uttar Pradesh.

The project will be connected to a solar project, which is being developed separately.

Bids must be submitted by July 10, 2026. Bids will be opened on the same day.

The scope of work entails the design, engineering, supply, packing and forwarding, transportation, unloading, storage, installation, and commissioning of the energy storage system on a turnkey basis. It also involves providing operation and maintenance services for 15 years.

The energy system’s design life, including battery life, must be 25 years, with degraded capacity as per the bidder’s proposal, considering daily single-cycle operation. The batteries must be rated for at least 10,000 cycles of operation.

The energy storage project must have a deliverable capacity of 200 MWh and a minimum nameplate capacity of 220 MWh.

Selected bidders must unload the project equipment at the site and integrate the energy storage with the solar systems at a 33 kV pooling switchgear.

They must guarantee a minimum dispatchable capacity of 92% at the points of interconnection for the project over 15 years. This would include a rated dispatchable capacity of 100% on the commercial operation date and 95% during the first year.

They must also design the batteries to account for 1% power transformer losses and 0.25% transmission line losses.

Successful bidders must ensure a minimum monthly round-trip efficiency of 80% for the project. This would include auxiliary consumption, measured at the energy storage system termination point at 33 kV.

The project must have a monthly availability of 98%.

Selected bidders must ensure that the energy storage system meets the deliverable capacity at the grid interconnection point, including reactive power support and power quality compliance up to the 220 kV Uttar Pradesh Power Transmission Corporation switchyard.

They must provide grid compliance studies for the solar-plus-storage system, auxiliary and emergency power supply, deviation settlement mechanism charges, and undertake civil works.

Recently, NGEL invited bids for the EPC of 3,200 MWh of battery storage systems at NTPC Renewable Energy’s solar project in Fatehgarh, Rajasthan.

Earlier, NGEL invited bids to develop 3,300 MWh of battery energy storage systems at the NTPC REL solar project in Khavda, Gujarat.