The variable electricity output of the RES (renewable energy sources) power plants, such as wind and hydropower, is an …, wind power will not replace hydropower but a decrease of thermal power production is foreseen as more wind power is added …

storage. Pumped hydropower remains the only mature and widely-adopted utility-scale energy storage technology. However, the … selection and development of new pumped hydropower sites is heavily influenced by physical constraints such as terrain, as well … culturally sensitive sites. Hence, transforming existing reservoirs to pumped hydropower schemes is often considerably easier …