Whalesbook
Project Update
ACME Surya Power Private Limited, a subsidiary of ACME Solar Holdings Limited, has commissioned the third phase of its Battery Energy Storage System (BESS) project. This latest phase contributes 11.429 MW and 51.354 MWh of storage capacity. The company announced this development on March 29, 2026. The Jaimalsar, Rajasthan-based project, part of a larger 250 MW / 1103.392 MWh initiative, now has a total commissioned BESS capacity of 107.143 MW and 481.440 MWh.
The commercial operation date for this phase is March 31, 2026, marking steady progress toward full project completion.
Why BESS Matters
Battery Energy Storage Systems (BESS) are vital for grid stability, especially with the rise of intermittent renewable sources like solar and wind. BESS technology stores excess power and releases it when demand is high, improving reliability. This latest commissioning highlights ACME Solar's commitment to expanding its energy storage infrastructure, a critical step in supporting India's clean energy goals and ensuring a steady power supply. It also brings the company closer to achieving its 250 MW BESS capacity target.
About ACME Solar
ACME Solar Holdings Limited is a leading Indian independent power producer (IPP) with diverse energy solutions, including solar, wind, hybrid, and Firm and Dispatchable Renewable Energy (FDRE). The company manages its projects end-to-end, from land acquisition to operations. ACME Solar has been actively commissioning its Battery Energy Storage System (BESS) projects in Rajasthan recently. The 250 MW / 1103.392 MWh Jaimalsar project is central to these efforts. These facilities are designed to strengthen grid stability and integrate renewable power, often operating on a merchant basis to capitalize on market price variations.
Key Impacts of Phase III Commissioning
- Boosted operational BESS capacity, contributing to the company's energy storage portfolio.
- Significant step closer to completing the 250 MW BESS project in Jaimalsar.
- Improved grid support capabilities through enhanced energy balancing and dispatch.
- Potential for additional revenue streams from merchant BESS operations and price arbitrage.
Risks to Watch
ACME Solar Holdings recently reported receiving a show-cause-cum-demand notice from the Directorate General of Goods & Services Tax Intelligence. The notice alleges a short payment of Goods and Services Tax (GST) totaling approximately Rs 149.73 crore for the period of April 2021 to March 2025, related to solar power generating systems. ACME Solar intends to contest the notice with the support of tax and legal advisors, stating no immediate financial or operational impact is expected. This situation is being closely watched, especially as similar notices have reportedly been sent to other renewable energy companies, suggesting a potential sector-wide concern.
Competitive Landscape
ACME Solar faces a competitive environment in India's Battery Energy Storage System (BESS) market. Other key players actively developing and commissioning energy storage projects include Tata Power Renewable Energy Ltd., Reliance New Energy Ltd., Adani Energy Solutions Ltd., and JSW Energy Ltd. As of March 2024, India's total installed energy storage capacity stood at approximately 219.1 MWh, indicating significant growth potential that ACME Solar aims to leverage.
Key Project Metrics
- Jaimalsar BESS Project Target: 250 MW / 1103.392 MWh (Targeted for FY26–FY27).
- Commissioned Capacity Post-Phase III: 107.143 MW / 481.440 MWh (As of March 31, 2026).
What to Watch Next
Investors will be watching for updates on the remaining phases of the 250 MW BESS project in Jaimalsar and the company's broader BESS project pipeline. Developments concerning the GST demand notice and ACME Solar's legal challenge will also be crucial. Performance metrics related to grid stability contributions and financial results from BESS assets are key areas to track.