ACME Solar Expands Rajasthan Battery Storage Project

ACME Solar Holdings Limited has commissioned the third phase of its Battery Energy Storage System (BESS) project in Rajasthan, advancing its large-scale energy storage ambitions. This latest activation adds 33.333 MW of power capacity and 160.51 MWh of energy storage to the project. The Commercial Operation Date for this specific phase is scheduled for April 02, 2026. Following this commissioning, the total operational capacity for this Rajasthan project has reached 100.003 MW with 481.500 MWh of storage.

This milestone brings ACME Solar significantly closer to completing its overall target of 300 MW / 1409.34 MWh for the BESS initiative. Projects like these are critical for enhancing grid stability by enabling the storage of renewable energy and its dispatch during peak demand, thereby improving overall power reliability.

ACME Solar, a leading Indian renewable energy Independent Power Producer (IPP), possesses a substantial portfolio in solar, wind, and hybrid projects. The company has been strategically increasing its energy storage capabilities, with reports in March 2026 highlighting significant BESS project commissioning activities in Rajasthan. Further supporting its growth trajectory, ACME Solar recently secured Rs 2,300 crore in long-term financing from NaBFID, aimed at bolstering its renewable energy expansion efforts.

However, the company faces certain challenges. ACME Solar is currently contesting a Goods and Services Tax (GST) demand notice totaling approximately Rs 149.73 crore, which is part of a wider sectoral dispute over the tax treatment of solar supplies. Additionally, ACME Solar has navigated past regulatory issues, including disputes with CERC and CTUIL concerning project delays, land documentation, and transmission connectivity for solar projects, which previously resulted in penalties and requests for extensions.

Operating within India's competitive BESS market, ACME Solar competes with major entities such as Tata Power Renewable Energy, Reliance New Energy, Exide Energy Solutions, Waaree Energies, and Amara Raja Energy & Mobility. For its Rajasthan project, the total planned capacity remains 300 MW / 1409.34 MWh, with 100.003 MW / 481.500 MWh now operational after Phase III. Investors will be closely monitoring the official start of commercial operations for Phase III on April 02, 2026, and the subsequent phases as ACME Solar moves towards its full 300 MW capacity. Key areas to track include the resolution of the GST demand notice, other regulatory developments, and the company's overall progress in expanding its BESS and renewable energy portfolio.