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SEAPA Hydro Power
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Learn Hydro Power

Hydropower is one of the oldest power sources on the planet, generating power when flowing water spins a wheel or turbine. It was used by farmers as far back as ancient Greece for mechanical tasks like grinding grain. Hydropower is also a renewable energy source and produces no air pollution or toxic byproducts.

 

Typical Energy Consumption

 

Energy consumption calculator

Energy consumption calculator. kWh calculator.

Typical appliance:
Power consumption:
Hours of use per day: h/day
     
 
     
Energy consumed per day: kWh/day
Energy consumed per month: kWh/month
Energy consumed per year: kWh/year

kWh- Kilowatt Hour- a unit of energy equivalent to one kilowatt of power expended for one hour

MWh-Megawatt hour- a unit of energy equivalent to one megawatt of power expended for one hour

Definitions

 
 

How do Dams and Lake Taps Work?

 
Dam Holds back the water creating a reservoir.
Lake Tap Involves excavating a tunnel almost to the water/rock contact and then blasting out thefinal protective rock to allow water to suddenly inflow into the tunnel from the lake. The water then runs the turbine. The tunnel is expected to carry water with a tremendous force to run the turbine to generate the electricity.
Intake Gates open on the dam (or the tap) and pull water through the penstock.
Penstock A pipeline that leads to the turbine. As water flows through the pipe, it builds pressure.
Turbine The water strikes and turns the large blades of the turbine that are attached to a generator.
Generator As turbine blades turn, so do a series of magnets inside the generator. Magnets rotate past copper coils, producing alternate current (AC) by moving electrons.
Transformer The transformer inside the powerhouse takes the AC and converts it to a higher-voltage current.
Outflow Used water is carried through pipelines, called tailraces, and re-enters the river downstream.