Although large hydroelectric installations generate most of the world's hydroelectricity, some situations require small hydro plants.

Tiny Switzerland has more than 1,100 dams, reservoirs, basins and small and large hydroelectric installations, producing 60 percent of the nation's electricity.

Guerrillas fighting the Liberian Government have reportedly seized control of the city's main hydroelectric installation and water-treatment plant, cutting water supplies and disrupting power.

In the late 1980s the Ontario government identified a site just upstream of the old paper mill flume lifting-frame as a potential site for a small hydroelectric installation.

That power line comes in from a hydroelectric installation several hundred miles from here.

Two dams completed since 1984 have increased the amount of power production from hydroelectric installations.

Both these rivers are developed with large-scale hydroelectric installations, part of the Manic-Outardes Project.

In 2009 work started on the construction of a large hydroelectric installation with three turbines capable of generating 62.3 MW.

Penstocks for hydroelectric installations are normally equipped with a gate system and a surge tank.

A number of rivers provide power to operate large hydroelectric installations.