India's Downstream Battery Storage Manufacturing Capacity Is 86 GWh

Pipeline is large, operating capacity is not

Only 21.6% of the total identified capacity, counting operational and pipeline projects together, is operating today. Most of the identified cell capacity is under construction or announced, and Mercom Capital Group CEO Raj Prabhu said the real challenge is converting that capacity into stable commercial production.

Existing manufacturers hold 47% of identified capacity across operating and planned facilities, and new entrants hold 53%. Lithium-based chemistries dominate both cell and downstream manufacturing. Gujarat accounts for 51% of capacity under construction, followed by Maharashtra at 20%.

Incentives and local content

The production-linked incentive (PLI) programme for Advanced Chemistry Cell manufacturing has an allocation of INR 181 billion to support 50 GWh of capacity, plus 5 GWh for niche technologies. Of the projects receiving active support, 6.4 GWh is operational and 28.6 GWh is under construction.

A 20% local-content requirement applies to projects backed by Viability Gap Funding. Mercom noted that eligible downstream components and services can meet it without domestic cells, which limits the direct pull on domestic cell demand. Cell makers, the report argues, need visibility on storage deployment, project awards and equipment demand before committing capital. As Voltgrid reported, Sigenergy plans a $250M India inverter and storage plant, the kind of downstream assembly this report describes.

What is not confirmed yet

Voltgrid has not seen the full Mercom report, so the 86 GWh figure and the shares above rest on the report as summarised by ESS News and pv magazine India. The articles do not say how much of the 86 GWh is actually utilised, nor when the cell capacity under construction will start production. Both are the numbers to watch for whether India's cell gap narrows.