India Secures Record-Low Solar Storage Tariff

22 September 2025

India has achieved its lowest-ever tariff for solar power with battery storage, marking a turning point in renewable energy pricing. CEIGALL India and ACME Solar won clean energy bids at ₹2.70/kWh and ₹2.764/kWh, respectively, setting rates below many coal projects.

The winning projects will deliver 220 MW of power during the day using solar panels and supply stored electricity in the mornings and evenings. Batteries will also be charged with cheaper night-time grid power to ensure round-the-clock reliability.

Officials said this breakthrough could guide other states to adopt renewable storage solutions, helping India move closer to its 2030 goal of 500 GW non-fossil capacity while steadily reducing dependence on coal.

The sub-₹2.80/kWh tariff for firm solar-plus-storage power is a milestone the Indian renewable sector has been approaching over successive bid cycles. Winning bids below prevailing coal-fired power costs - for a product that combines daytime solar generation with battery discharge during morning and evening peaks - marks a functional inflection point in the country's electricity economics.

The commercial implications extend well beyond price. Firm renewable power addresses one of the main historical objections from discoms to signing large solar PPAs: intermittency.

By bundling storage with generation and offering assured supply across specific time windows, developers can meet round-the-clock demand profiles that were previously the domain of thermal generation.

This structure is likely to become a reference model for future auctions, with knock-on effects on how storage assets are financed, dispatched and remunerated across the Indian grid.

For utilities, corporate offtakers and investors evaluating firm renewable power procurement, the shift changes both the commercial case and the disclosure requirements.

Cognitud advises energy-sector clients on responsible investment strategy, PPA structuring and the ESG frameworks that increasingly determine cost of capital for storage-integrated projects.

Our climate action, energy transition and market intelligence teams help clients position storage as a strategic decarbonisation lever rather than a technical add-on - connecting procurement choices to long-term net-zero commitments and TCFD-aligned climate risk narratives.

Record-low solar-plus-storage tariffs reset what firm-power procurement actually costs for Indian industrial and commercial buyers, and Scope 2 economics get rewritten with them. Our energy-transition, climate-action and responsible-investment teams help clients turn storage into a strategic decarbonisation lever rather than a technical add-on - connecting procurement choices to long-term net-zero commitments and TCFD-aligned climate-risk narratives.

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