The Maha Oya Pumped Storage Power Station is a 600 being developed in the and areas of . Upon completion, it will be the country's first facility, and one of the in terms of nameplate capacity. The Maha Oya facility is designed to store excess renewable energy from solar and wind sources, thus creating supporting infrastructure for Sri Lanka's target of generatin.
This 600 MW project is designed to store surplus energy generated from solar and wind sources, enhancing grid stability and maximizing renewable energy utilization. Situated in Aranayake and Nawalapitiya, the project will consist of two reservoirs linked by a 2.5 km tunnel.
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