Executive summary

Storex (Private) Limited has installed a 10 MW / 40 MWh Battery Energy Storage System (BESS) in Anuradhapura, Sri Lanka, which was connected to the national grid on September 18, 2026. It is the first of 13 planned systems with a combined capacity of 130 MW / 520 MWh. The batteries will store surplus daytime solar power and release it to the grid at night.

Storex (Private) Limited has installed a 10 MW / 40 MWh Battery Energy Storage System (BESS) in Anuradhapura, Sri Lanka. The system was connected to the national electricity grid on the morning of September 18, 2026.

President Anura Kumara Dissanayake attended the event marking the grid connection. The project is the first of 13 planned battery storage systems under a wider national programme.

At full output, the 40 MWh system can provide 10 MW for about four hours. The batteries are intended to store excess solar power generated during the daytime and release it when electricity demand is higher.

The wider programme includes 13 storage systems with a combined capacity of 130 MW / 520 MWh. According to the government, the remaining systems are expected to be completed and connected within two to three months. Together, the projects are intended to support the stability of Sri Lanka’s national grid.

Minister of Ports and Civil Aviation and Energy Anura Karunathilake said Sri Lanka already generates close to 3,000 MW of solar power during the daytime, while average daytime electricity demand is about 2,800 MW. He said demand rises to around 3,100 MW at night.

The minister said Sri Lanka has lacked sufficient capacity to store excess daytime solar power. He added that projects with a combined capacity of 160 MW are currently being implemented to address this gap and are expected to be connected to the grid before the end of 2026.

The government has also called for bids for battery storage projects with capacities of 400 MW, 250 MW and 150 MW, among others.