ACME Commissions Phase IV of Rajasthan BESS, Total Capacity Reaches 480 MWh
Phased Build-out Complete
ACME Solar has commissioned Phase IV of its battery energy storage facility in Rajasthan, bringing the total operational capacity at the site to 480 MWh. The project uses lithium iron phosphate (LFP) battery technology and is designed for 4-hour discharge duration at peak rated power. The phased approach allowed ACME to optimise procurement costs across multiple battery supply contracts and incorporate technology improvements between phases.
The facility operates under a hybrid model, combining revenue from SECI capacity contracts with energy arbitrage on the Indian Energy Exchange (IEX). During midday hours, when Rajasthan's solar surplus drives spot prices to INR 1-2 per kWh, the system charges. It then discharges during the evening peak when prices routinely exceed INR 6-8 per kWh, capturing a meaningful spread.
Rajasthan as a Storage Hub
Rajasthan's combination of abundant solar irradiance, available land, and acute evening peak demand makes it India's most logical location for large-scale battery storage. The state's installed solar capacity exceeds 35 GW, generating significant midday surplus that currently faces curtailment. BESS projects like ACME's directly address this imbalance.
What It Means
ACME's 480 MWh facility demonstrates that phased BESS development is commercially viable in India. The strategy reduces execution risk and allows developers to benefit from falling battery prices across build phases. With Rajasthan's BESS pipeline growing rapidly, the state is positioning itself as India's energy storage capital alongside its dominance in solar generation.