Tenders for 1.5 GWh of Indian utility-scale batteries

The NGEL division of India’s National Thermal Power Company is tendering engineering, procurement, and construction (EPC) contracts for two BESS.

NGEL has issued a tender for the EPC of a grid-connected 250 MW/1 GWh BESS at its Kayamkulam thermal power plant.

The scope of work includes the design, engineering, supply, construction, erection, testing, and commissioning of the BESS on a turnkey basis. It also covers comprehensive operation and maintenance of the system for 15 years following the successful completion of a trial run.

The project is divided into two blocks:

• Block 1: 125 MW/500 MWh, integrated at the 33 kV existing solar pooling switchgear
• Block 2: 125 MW/500 MWh, integrated at the 220 kV switchyard

According to the tender document, the BESS must be supplied in standardized containers, each with a minimum direct current (DC) capacity of 5 MWh.

NGEL has also invited bids for the EPC of another grid-connected 130 MW/520 MWh BESS on a turnkey basis. The project is split into two blocks: Ramagundam (100 MW/400 MWh) and  Sipat (30 MW/120 MWh).

The scope of work includes the design, engineering, supply, construction, erection, testing, and commissioning of the grid-connected BESS.

According to the tender document, “The BESS capacity to be considered is the rated AC [alternating-current] discharge capacity at the point of injection/metering. The BESS should be integrated at the 33 kV pooling substation of the solar plant. Each BESS unit should be housed in a standardized container with a minimum DC capacity of 5 MWh.”

The BESS, including batteries, must be designed for a lifespan of 15 years, assuming daily single-cycle operation, starting from the successful completion of a trial run.

From pv magazine India.