ACME Solar has secured a 40% share of India's battery energy storage market, generating Rs 226 crore from these operations in Q1 FY27. The company is now fast-tracking its storage capacity expansion to 10,000 MWh this fiscal year to meet peak power demand. This shift toward energy storage and short-term supply contracts will be a key factor for future earnings stability.
ACME Solar is aggressively expanding its footprint in India’s energy storage sector, a move designed to address the intermittent nature of solar power. As of June 2026, the company operates 3,621 megawatt-hours (MWh) of battery energy storage system (BESS) capacity, representing about 40% of India's total installed capacity of 7,499 MWh. This early lead allows the company to store solar power generated during sunny daylight hours and sell it during high-price evening peak periods.
Revenue Impact and Growth Targets
The financial impact of this strategy is already visible in the company’s recent performance. In the first quarter of fiscal year 2027, BESS operations contributed Rs 226 crore, accounting for nearly 23% of the total revenue for the period. Given this success, the company has accelerated its expansion plans, aiming for 10,000 MWh by the end of this fiscal year. ACME Solar has already signed short-term contracts for electricity supply from these assets, which are projected to bring in Rs 1,400 crore in revenue throughout FY27. For perspective, the company reported a total revenue of Rs 2,507 crore for the full fiscal year 2026.
Strategic Transition and Market Risks
While the current model relies on short-term merchant contracts that benefit from peak electricity prices, the company’s long-term plan is to integrate these battery systems directly into its renewable energy projects. These integrated projects will eventually operate under long-term power purchase agreements (PPAs), which generally provide more predictable cash flow than merchant sales.
However, investors should consider that the BESS sector is rapidly evolving. The profitability of the company’s current short-term contracts depends heavily on supply shortages during peak hours. As other developers increase their own storage capacity, competition will likely intensify. This could lead to a moderation in the price of electricity during peak hours, potentially pressuring profit margins for merchant-based storage operations over the next one to two years. Furthermore, the reliance on rapid capacity expansion requires significant capital, making the efficient management of debt and project execution critical for maintaining financial health.
Looking ahead, the next phase for the company involves scaling its overall renewable energy portfolio from 2.9 GW to 7.0 GW by FY29. Shareholders will likely track the company's ability to maintain high utilization rates for its new BESS capacity and the transition of these assets from short-term merchant contracts to stable, long-term power supply agreements.