Acme Solar commissions 155 MW BESS capacity in Rajasthan

Acme Solar Holdings Ltd has commissioned an additional 155 MW / 470.25 MWh of battery energy storage system (BESS) capacity in Rajasthan, taking its total commissioned BESS capacity to 297.67 MW / 951.74 MWh, the company said in a regulatory filing.

The newly added capacity forms part of a planned BESS portfolio of 835 MW / 3,114.64 MWh across special-purpose vehicles. These projects are connected to the inter-state transmission system (ISTS) and will operate on a merchant basis, earning revenue from price differences between peak and non-peak demand periods. 

In a separate filing, the company said its wholly owned subsidiary, Acme Surya Power Private Ltd, has commissioned the second phase of a 35.714 MW / 160.48 MWh BESS project at Jaimalsar in Bikaner district. The commercial operation date for this phase is March 26, 2026. Following this, the subsidiary’s commissioned capacity stands at 95.714 MW / 430.086 MWh, against a total project size of 250 MW / 1,103.392 MWh.

The company stated that its BESS projects are designed to support grid reliability by charging during non-peak periods and discharging during peak demand hours.

On March 25, 2026, Acme Solar had commissioned BESS phases at Bikaner and Jaisalmer, including a 60 MW / 269.606 MWh phase at Bikaner and a 95 MW / 200.64 MWh phase at Jaisalmer. With the latest commissioning, the company has further expanded its BESS footprint in Rajasthan.

Acme Solar operates a total portfolio of 8,071 MW across solar, wind, storage, firm and dispatchable renewable energy, and hybrid solutions. Its operational contracted capacity stands at 2,978 MW, including about 1 GWh of BESS capacity. An additional 5,093 MW is under construction, including about 16 GWh of BESS installations, while 3,292 MW is under power purchase agreement (PPA) signed stage.

The featured photograph is for representation only.