Demirköprü Dam and Hydroelectric Power Plant was built on the Gediz River at a distance of 100 km from Manisa province and 27 km from Salihli district. It has a total installed power of 69 MW with its 3 generators, each of which is 23 MW, and its annual production capacity is foreseen as 80 million kWh.
Measurements were started for the construction of Demirköprü Dam and Hydroelectric Power Plant located in the Gediz Basin in 1938, and the project of the facilities was prepared in 1953-1954 by the Electrical Works Survey Administration and Knappen-Tippetts-Abbett McCarthy Engineering Company. The construction works of the power plant, which were started in 1954, were completed in 1960 and it was put into operation. Demirköprü Dam and Hydroelectric Power Plant, which is built on the Gediz River originating from Murat Mountain near the Gediz district of Kütahya and heading west, is an earth-rock body fill type of dam. The body volume of the dam is 4.560.000 m³, the body height is 77 m, and the crest length is 543 m. The maximum water elevation of the dam is 244.2 m, and the lake volume at this elevation is 1.022 hm³ and the lake area is 45 km².The energy produced at the power plant is transferred to Salihli and Alaşehir regions with 154 kV lines and to Demirci-Gördes, Kula, Alaşehir and Salihli Villages with 34.5 kV lines.