World’s Largest Battery Takes Shape in India’s Massive Solar Farm

Construction is progressing in western India on what the Adani Group, led by billionaire Gautam Adani, describes as the country’s largest battery energy storage system. Situated within the Khavda Renewable Energy Park in Gujarat, the installation is planned to store 3,530 megawatt-hours (MWh) of power, with a target completion date of March 2026.

As of April 2026, however, only 39% of the capacity is operational, leaving the majority of the battery system incomplete.

Massive Lithium-Ion System

The energy storage facility will rely on lithium-ion technology distributed across more than 700 containers, providing a power output of 1,126 megawatts and an energy capacity sufficient to maintain that output for approximately three hours. Adani first announced the project on November 11, 2025, though the total investment has not been disclosed. As of April 1, 2026, 1,376 MWh of capacity had been brought online, with no updated timeline for full completion.

Stabilizing India’s Grid

The battery is designed to address the intermittent nature of solar and wind power, which fluctuate with weather conditions and time of day. By storing excess daytime electricity and releasing it during evening peak demand, the system reduces dependency on fossil fuel plants. It also aims to ease transmission congestion and minimize renewable energy curtailment, ensuring cleaner power is efficiently used.

“Energy storage is the cornerstone of a renewable-powered future,” said Adani Group chairman Gautam Adani during the announcement. “This project sets global benchmarks while reinforcing India’s commitment to energy independence and sustainability.”

Ambitious Expansion Plans

The Khavda battery is just the beginning. Adani plans to roll out an additional 15 gigawatt-hours of storage by March 2027, aiming for 50 GWh over five years. For context, India’s Central Electricity Authority estimates that nationwide battery storage needs will reach 34 GWh by 2026-27, climbing to 236 GWh by 2031-32. Currently, only about 0.5 GWh has been commissioned across India.

The Khavda Renewable Energy Park

The Khavda park itself is already a large-scale operation. In fiscal year 2025-26, Adani Green Energy added over 5 GW of new renewable capacity, marking the largest greenfield annual expansion outside China. The park’s total operational portfolio now stands at 19.3 GW, with 9.4 GW installed at Khavda out of a planned 30 GW by 2029. Covering 538 square kilometers, the site is five times the size of Paris.

India’s Renewable Ambition

India has set a target of 500 GW of non-fossil fuel capacity by 2030 and aims for net-zero emissions by 2070. Large-scale energy storage like Khavda is critical for integrating intermittent renewables into the grid as baseload power. Beyond storing electricity, the Khavda project tests whether India can execute energy infrastructure at the pace required for its ambitious transition to a sustainable energy future.