The project is owned by Laos State Electricity Corporation, Electricite du Laos (EDL). It is being developed by a joint venture of EDL (20%) and Sinohydro (80%), a subsidiary of Power China, under a 25-year .
[pdf] It serves as a rechargeable battery system capable of storing large amounts of energy generated from renewable sources like wind or solar power, as well as from the grid during low-demand periods. When needed, this stored energy can be discharged to provide a dependable electricity supply.
[pdf] The systems, each with a capacity of 30 MW/120 MWh (total 240 MWh), will be built at the Ċ½eljezara site to improve electricity supply stability, integrate renewable energy faster, and boost energy independence.
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