Italy is the world's 14th largest producer of hydroelectric power, with a total of 41,456 GWh produced in 2012. Energy from hydro accounted for about 18% of the national production in 2010, with hydroelectric plants located mainly in the Alps and the Apennines. From the beginning of the 20th century to the 1950s, hydroelectric power accounted for the majority of generated power, but as energy needs increased approaching the 21st century that percentage dropped significantly.