ACME Solar Commissions 143 MW Battery Energy Storage System in Rajasthan, Expands Grid Stability Capabilities
Gurugram, March 13, 2026: ACME Solar Holdings Limited has commissioned 142.67 MW / 481.49 MWh of Battery Energy Storage System (BESS) capacity in Rajasthan, marking a significant step in strengthening India’s renewable energy infrastructure and grid stability.
The newly operational storage capacity represents Phase-1 of ACME Solar’s planned 585 MW / 2,011.24 MWh BESS deployment through its special purpose vehicles (SPVs). The energy storage systems are connected to the Inter-State Transmission System (ISTS) and are expected to play a key role in balancing power supply and demand.
Supporting Renewable Energy Integration
Battery energy storage systems are becoming increasingly important as India expands its renewable energy capacity. The systems allow excess power generated during low-demand periods to be stored and supplied back to the grid when demand rises.
According to the company, the newly commissioned BESS units will operate on a merchant basis in the short term, enabling ACME Solar to generate additional revenue through price arbitrage between peak and non-peak electricity demand periods.
Over time, these storage assets will be integrated with Firm and Dispatchable Renewable Energy (FDRE) projects, which will operate under long-term power purchase agreements lasting up to 25 years.
Improving Grid Stability
Energy storage systems like BESS are designed to enhance power grid efficiency and reliability. By charging batteries during periods of low electricity demand and discharging during peak demand, the systems help manage fluctuations in renewable energy generation.
This capability is expected to contribute to better grid stability, improved power utilisation, and smoother integration of renewable energy sources such as solar and wind.
Large-Scale Energy Storage Plans
ACME Solar’s broader renewable energy portfolio requires installation of approximately 17 GWh of battery storage capacity across multiple states in India over the coming years.
The company’s renewable portfolio currently includes a diversified mix of solar, wind, hybrid, energy storage, and FDRE projects, positioning it as a key player in India’s transition toward cleaner power generation.
Expanding Renewable Energy Portfolio
ACME Solar currently manages a total renewable energy portfolio of 8,071 MW across various technologies. Out of this, 2,966 MW of capacity is already operational under contracted projects, along with 481 MWh of operational battery storage capacity.
In addition, 5,105 MW of projects are under construction, including around 16.5 GWh of planned battery energy storage installations.
The company also reported that 3,304 MW of projects under construction are backed by signed power purchase agreements (PPAs), ensuring long-term revenue visibility.
Integrated Renewable Energy Development
ACME Solar operates with in-house engineering, procurement and construction (EPC) as well as operations and maintenance (O&M) capabilities, allowing the company to manage the entire lifecycle of renewable projects.
This integrated model helps deliver projects efficiently while maintaining high capacity utilisation factors and operational performance, the company said.
Growing Role of Storage in India’s Energy Transition
Energy experts note that battery storage will play a critical role in India’s clean energy transition, particularly as solar and wind power generation continues to grow rapidly.
Large-scale battery projects enable renewable energy producers to provide reliable, dispatchable electricity, which helps reduce intermittency challenges and supports a more resilient national power grid.
With its latest BESS commissioning in Rajasthan, ACME Solar strengthens its position in the rapidly expanding energy storage segment, which is expected to become a key pillar of India’s renewable energy ecosystem.