Kerala is set to make a major leap in renewable energy reliability as NTPC Green Energy Limited has issued an engineering, procurement, and construction (EPC) tender for a 250 MW/1,000 MWh battery energy storage system (BESS) at its Kayamkulam facility. The project is poised to significantly enhance grid stability and support the state’s clean energy goals by addressing the intermittency of solar and wind power.

The system will be developed in two equal blocks—each of 125 MW/500 MWh. Block-1 will be connected to the site’s existing 33 kV solar pooling switchgear, while Block-2 will interface with the higher-voltage 220 kV switchyard, reinforcing Kerala’s transmission capabilities across multiple voltage tiers.

With a storage capacity capable of powering tens of thousands of homes for hours, the 1,000 MWh BESS represents a critical step in Kerala’s move towards net-zero emissions. It will help integrate more renewable energy into the grid, provide peak load management, and reduce the state’s reliance on polluting peaker plants.

The EPC scope includes design, engineering, supply, transport, installation, testing, and commissioning. The turnkey approach ensures a single point of accountability, streamlining execution and performance assurance.

Beyond bolstering clean energy integration, the project aims to catalyse broader investment in renewables, strengthen energy resilience, and support Kerala’s long-term sustainability agenda. Once deployed, it is expected to serve as a benchmark for large-scale energy storage adoption across India and globally.