Dakar, Senegal, August 7, 2025 – Just one year after laying the foundation stone, Africa REN announces the commercial commissioning of Walo Storage, the first photovoltaic facility in West Africa combined with lithium-ion battery storage, designed for frequency regulation and to. . Dakar, Senegal, August 7, 2025 – Just one year after laying the foundation stone, Africa REN announces the commercial commissioning of Walo Storage, the first photovoltaic facility in West Africa combined with lithium-ion battery storage, designed for frequency regulation and to. . Urgent need to stabilize the grid, due to the high share of renewable production in the energy mix. The project will increase the current spinning reserve by 40% and will provide additional services such as frequency control, island functioning and Black-Start capability. The €40 million project includes a 16 MW photovoltaic plant paired with a 10 MW/20 MWh. . The nation's commitment to sustainable development and renewable energy sources has led to the establishment of a pioneering hybrid energy facility in northern Senegal, marking a significant milestone in the country's quest for energy security and decarbonization. Dubbed Walo Storage, the EUR-40-million (USD 46.