The search for alternative energy is increasing along with the increasing global demand for electricity. Utilization of dams as an alternative energy source using a Floating Solar Power Plant (FSPP) by utilizing the pool area of the dam. FSPP is a flagship program, the electricity price is quite good, licensing is simpler, does not require land acquisition, and can be developed with a large enough capacity. This research utilizes the open space of the Bening Widas Dam, Madiun, Indonesia to be developed as a floating solar power plant. The research method uses quantitative analysis of secondary data to calculate rainfall intensity, planned flood discharge and FSPP design on the surface of the water and the Global Solar Atlas application to calculate the duration of sunlight around the dam. The results showed that the area puddle in Dam Clear Widas 570 ha, with a maximum utilization of 5% which is 285,000 m2 . The maximum capacity of FSPP that can be produced is around 29.63. With an area of 1 hectare, the resulting generating capacity is 1.04 MWp. The value of Global Horizon Irradiation (GHI) around the Bening Widas Dam is 1,962.3 Kwh/m 2 . The role of the Bening Widas Dam as a flood controller can be maximized by placing FEDS, a flood early detection tool equipped with sensors for rainfall, temperature, humidity and water level.