Hydropower

thumb|upright=1.3|The Three Gorges Dam in China; the hydroelectric dam is the world's largest power station by [[installed capacity.]]

French water pump, built 1684

it refers to the technology and building to obtain iron

organization

Rainpower AS is a Norwegian company which develops, designs, manufactures and sells equipment for hydropower electricity generation. The company provides Pelton, Francis, and Kaplan turbines, as well as pump turbines, small hydropower plants, turbine governor, oil pressure systems, valve controllers, exciters, valves, gates, pipes, and other products and services related to the hydropower equipment industry.