In June 2023, Bui Power Authority (BPA) achieved another significant milestone with the successful installation of a groundbreaking 5-megawatt floating solar facility at its Bui Generating Station in the Bono Region. This project, the first of its kind in the West African sub-region, involves deploying photovoltaic modules on water infrastructure, optimizing land use, and improving module efficiency.
Occupying approximately 8.5 acres of the Bui water reservoir, this 5MWp installation generates the same amount of power that would have required 19.35 acres of land, resulting in over 50% land savings. The bifacial solar panels used in this project absorb solar radiation from both sides, increasing energy output by 19%. Additionally, the cooling effect of the water enhances panel efficiency. Unlike land-based solar systems, the floating solar installation eliminates the need for deforestation, thereby preserving natural ecosystems. Moreover, it creates a favorable environment for fish spawning, promoting fingerling production and supporting aquatic biodiversity.
The completion of this floating solar facility underscores BPA’s commitment to renewable energy leadership. It also aligns with Ghana’s National Energy Plan, which aims to increase renewable energy penetration by 10% by 2030.
The 5MWp floating solar plant is an integral part of the successful implementation of the Bui Hydro-Solar Hybrid (HSH) system, marking a significant achievement for Ghana and the West African sub-region. Combined with the existing 50MWp land-based solar farm, this initiative constitutes the largest solar farm in Ghana. The integration of 404MW of hydroelectric power and 55MWp of solar capacity further strengthens the region’s renewable energy capabilities.
Since solar power generation is intermittent, a state-of-the-art 10MWh Battery Energy Storage System (BESS) has been installed to provide backup power and mitigate fluctuations. This advanced technology ensures stable grid frequency during hybrid operations, enhancing system reliability.
The success of the Bui HSH project highlights the transformative potential of clean energy in driving economic development, improving livelihoods, and combating climate change in Africa.