NTPC Green Energy Ltd (NGEL) is tendering for engineering, procurement and construction (EPC) contracts to develop 3,300MWh of battery storage capacity at the 30GW Khavda hybrid renewable energy park in Gujarat, India.
The renewable energy subsidiary of state-owned power producer NTPC published its Notice Inviting Tender (NIT) last week (29 May), with documents going on sale on 5 June and the bid submission window closing 25 June.
Posted on the parent company’s tendering portal, the tender will award EPC package contracts through a competitive bidding process.
The battery energy storage system (BESS) facilities will be deployed at NTPC REL Khavda Solar Plant, located within the huge complex in Gujarat’s Kutch district that spans 72,400 hectares. Strategically situated in an area of western India rich in solar and wind potential, the park is connected to India’s Interstate Transmission System (ISTS).
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Four separate blocks of BESS will be installed: three of 300MW rated AC discharge capacity at the point of injection at ISTS substations, with 900MWh capacity each and another of 200MW/600MWh. Each will connect at the 33kV level to a designated 300MW solar PV plant at the complex.
The EPC package includes a full scope of work spanning design to supply, installation and commissioning of BESS assets on a turnkey basis, as well as integration with the solar PV assets and the grid.
NGEL requires BESS assets to have a 25-year operational lifetime from the date of commissioning, accounting for capacity degradation and offering a minimum 10,000 cycles of operation.
Operations and maintenance (O&M) contracts with 15-year terms will be included in the scope of bidding, while the minimum monthly round-trip efficiency (RTE) must be at least 80%, including auxiliary consumption, and 98% annual availability must be maintained, according to NGEL documents.
The issuing of NGEL’s tender follows the recent announcement from Adani Green Energy, the Adani Group subsidiary that is overseeing the hybrid park’s overall development, that it has to date already commissioned 3.37GWh of cumulative BESS capacity at the Khavda park.
As reported by our colleagues at PV Tech, NGEL announced in March that it has now deployed more than 2.2GW of solar PV generation capacity at the Khavda project, at which several developers are building solar, wind and BESS facilities on contiguous land. The announcement took NGEL’s total installed renewable energy capacity across India to more than 10GW.
According to a blog post from Blackridge Research & Consulting, Khavda, planned to comprise 26GW of solar and 4GW of wind, is estimated to cost around US$18.7 billion and is planned for completion in 2030.
