ACME Solar Holdings Ltd has signed an agreement with the Solar Energy Corporation of India (SECI) to supply 300 MW of assured peak renewable power, strengthening the role of battery-backed clean energy in meeting India’s evening and night-time electricity demand.
The Power Procurement Agreement was signed through ACME Solar’s subsidiary, ACME Greentech Twenty Pvt Ltd, under SECI’s Firm and Dispatchable Renewable Energy (FDRE)-IX tranche. The contracted capacity is 300 MW with an assured energy volume of 1,200 MWh, at a tariff of ₹6 per unit. The agreement has an effective date of October 6, 2026, according to a company statement.
Under the arrangement, ACME Solar will supply 4 MWh per MW of contracted capacity during any four hours of non-solar operation each day. The company will also be required to maintain a minimum monthly availability of 90 per cent.
The project will combine solar generation with a Battery Energy Storage System (BESS) to meet the scheduled supply obligations. ACME Solar said it would use night-time grid connectivity already available to the company for the project. The arrangement is designed to provide power beyond daylight hours, when conventional solar generation is unavailable and electricity demand can remain high.
FDRE projects are structured to address one of the central operational challenges of renewable-heavy power systems: matching variable generation with demand. Solar power is concentrated in daylight hours, while demand often rises later in the day. A combination of generation and storage allows contracted renewable power to be delivered during specified periods rather than only when the sun is available.
Following the agreement, ACME Solar’s under-construction portfolio with signed power purchase agreements stands at 4,310 MW. Its total under-construction contracted capacity is 5,380 MW, the company said. The latest contract therefore adds to a pipeline in which a substantial portion of capacity has already secured offtake arrangements.
ACME Solar said its overall contracted portfolio stands at 8,370 MW across solar, battery energy storage, FDRE, hybrid and wind solutions. Its operational capacity is around 3,123 MW, alongside 4.96 GWh of BESS capacity.
The agreement comes as India’s power system accommodates a growing share of renewable generation while requiring dependable supply during periods when solar output is unavailable. The contract’s availability requirement and defined non-solar supply window place operational performance, storage availability and grid connectivity at the centre of delivery.
The company statement did not provide the project’s location, construction schedule or commissioning date. It also did not disclose the capital cost or the specific battery configuration for the 300 MW facility. The next implementation milestones will depend on the project’s construction and integration with the existing grid connection identified by ACME Solar.
