Hydroelectricity notes

Hydroelectricity refers to electricity produced by hydropower.

Most hydroelectric power comes from dammed water which drive a water turbine
and a generator.

The hydropower depends on the volume and on the difference in height
between the source and the waters outflow.

And a large pipe delivers water from the reservoir to the turbine


Kinds of hydroelectricity methods:
 Pumped storage
  This method produces electricity to high demands by
  moving water between reservoirs at different elevations.
 Run of the river
  have only a small or no reservoir capacity so the water
  only comes from upstream. And oversupply passes unused.
 Tidal
  Makes use of the tides of the ocean water; The daily
  rise and fall of ocean water due to tides.
 
Facilities and station:
 There are large facilities, small facilities and micro and pico

 And underground stations
  With an underground tunnel to take water from the high reservoir
  to the generating hall build in an underground cavern near the lowest point
  of the water tunnel and there is another horizontal tailrace.


Good things:
 It consumes no water.
 It is a clean source of energy.
 -It produces no direct waste