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ACME Solar Commissions 143 MW / 481 MWh Battery Energy Storage Project in Rajasthan
Mar 13, 2026
ACME Solar Holdings has commissioned 142.67 MW / 481.49 MWh of Battery Energy Storage System (BESS) capacity in Rajasthan as part of Phase-1 of its planned 585 MW / 2,011.24 MWh battery storage portfolio.
The project marks a significant milestone in the company’s strategy to expand energy storage infrastructure and support grid stability as renewable energy capacity grows across India.
Phase-1 of Large Multi-State Storage Program
The newly commissioned BESS has been deployed through several ACME subsidiaries under special purpose vehicles (SPVs). It forms the first operational phase of a larger 585 MW battery storage program.
According to the company, its broader renewable energy portfolio will require around 17 GWh of battery energy storage installations across multiple states in the coming years.
Merchant Operations Before Long-Term Integration
The battery systems are connected to the existing Inter-State Transmission System (ISTS), allowing them to operate initially on a merchant basis in the short-term power market.
This model enables the project to generate revenue through energy arbitrage, charging the batteries during low-demand (off-peak) periods and discharging electricity during high-demand (peak) hours, when power prices are higher.
Eventually, these storage systems will be integrated with the company’s Firm and Dispatchable Renewable Energy (FDRE) projects, after which they will operate under long-term power purchase agreements (PPAs) spanning 25 years.
Supporting Grid Stability
ACME Solar noted that the BESS installations are designed to improve grid reliability and optimize renewable energy utilization. By storing excess power during low-demand periods and releasing it during peak demand, the systems help balance supply and demand on the grid.
This capability is becoming increasingly important as India expands solar and wind generation, which can fluctuate based on weather conditions.
ACME Solar’s Growing Portfolio
ACME Solar currently has a diversified renewable energy portfolio of 8,071 MW, covering solar, wind, hybrid, storage, and FDRE projects.
Key portfolio highlights include:
- Operational contracted capacity: 2,966 MW
- Operational BESS capacity: 481 MWh
- Under-construction capacity: 5,105 MW
- Battery storage under development: about 16.5 GWh
- Under-construction PPA-signed portfolio: 3,304 MW
The commissioning of this BESS project represents a key step in ACME Solar’s strategy to integrate large-scale storage with renewable energy assets, enabling more reliable and dispatchable clean power supply.