The Energy Development Corporation Limited (EDCL) has invited private power producers to apply to develop a 200-megawatt floating solar power plant with battery storage at Lake Sake in Ngoma District, eastern Rwanda.
The proposed project will combine a floating solar photovoltaic installation with an 800-megawatt-hour battery energy storage system and infrastructure to connect the facility to the national electricity grid, according to a prequalification notice published by state-owned Rwanda Energy Group (REG).
EDCL, a subsidiary of REG, said interested independent power producers must submit their applications by November 12, 2026. The procurement will follow the public-private partnership framework.
A site visit for interested companies is scheduled for October 23, with participants expected to depart from Ngoma District Office at 10 a.m. Applicants have been advised to bring appropriate equipment to assess conditions at the proposed lake site.
The prequalification stage will determine which companies meet the administrative, technical and financial requirements to proceed in the procurement process. Detailed conditions are set out in the tender documents published by REG.
The proposed battery system would allow electricity generated during sunny periods to be stored and released when solar output falls or demand increases. At its stated capacity, an 800MWh battery system could theoretically deliver 200MW of power for four hours, although actual performance would depend on usable storage capacity, operating conditions and system losses.
The project also requires associated evacuation infrastructure to carry the electricity from the plant to the grid. Its eventual contribution to the country’s power supply will depend on the procurement outcome, financing, construction and successful grid integration.
Floating solar installations place photovoltaic panels on structures on a water body rather than occupying land. The approach can reduce competition for land, although projects must account for water conditions, environmental impacts, anchoring systems and the costs of connecting generation to the grid.
The Lake Sake proposal remains at the developer prequalification stage. EDCL’s notice does not, by itself, confirm that a developer has been selected or establish when the plant will begin operating.
