ACME Solar, along with its subsidiaries, has commissioned an additional 155MW/470.25 megawatt-hours (MWh) of battery energy storage system (BESS) capacity in the Indian state of Rajasthan.
The development increases the company’s total commissioned BESS capacity to 297.67MW/951.74MWh, out of a planned total of 835MW/3.11 gigawatt-hours (GWh) across the various special purpose vehicles.
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The newly commissioned systems are integrated with the existing inter-state transmission system in Rajasthan and set to operate on a merchant basis.
This operation method is expected to generate revenue by capitalising on the price differences between peak and non-peak electricity demand hours.
The BESS projects are designed to improve grid reliability and optimise power use by storing energy during low-demand periods and discharging it when demand is higher.
This helps balance electricity supply and demand, strengthening overall grid stability.
ACME Solar is a renewable energy company with a diverse portfolio totalling 8.07GW, which includes solar, wind, storage, firm and dispatchable renewable energy and hybrid solutions.
The company has an operational contracted capacity of 2.97GW and approximately 1GWh of BESS capacity.
Additionally, it has 5.09GW of contracted capacity under construction, which includes around 16GWh of BESS installations.
The signed power purchase agreement portfolio currently under construction amounts to 3.29GW.
In November 2025, ACME Solar’s subsidiary, ACME Platinum Urja, signed a 25-year power purchase agreement with the Solar Energy Corporation of India for a 200MW solar project, which includes an integrated 100MW energy storage system.
This agreement was concluded at a tariff of Rs3.42 ($0.03) per unit, following the necessary approvals from both central and state regulators.
