CEB Advances Sri Lanka’s First Water Battery Project

This pioneering 600 MW initiative, located in Aranayake and Nawalapitiya, will play a crucial role in enhancing the country’s energy security by storing excess renewable energy generated from solar and wind sources.

The innovative project will feature two reservoirs connected by a 2.5 km tunnel, allowing it to function as a large-scale energy storage system. This will ensure grid stability and enable Sri Lanka to better integrate renewable energy into its power mix. By reducing dependence on fossil fuels and cutting carbon emissions, the Maha Oya project is poised to support Sri Lanka’s ambitious goal of generating 70% of its electricity from renewable sources by 2030.

At a recent meeting with international development partners, the CEB unveiled the project's financial roadmap, outlining efforts to secure long-term funding from global agencies. The goal is to minimize the impact on electricity tariffs and keep power affordable for consumers, while still making this vital transition to sustainable energy.

The Maha Oya Pumped Storage Hydropower Project is seen as a major step toward energy independence for Sri Lanka. Not only will it enhance renewable energy absorption and support grid stability, but it will also contribute to economic growth, job creation, and environmental sustainability.