What is the efficiency of hydro power dams?

Answer 1

Depending on the size and construction, hydroelectric dams can capture up to 90% of the available energy. Smaller generators may provide as little as 50%.

A major consideration is the volume of particulates (silt) impounded by a dam. This may require some energy be allowed to escape.

Answer 2

Depending on the size and construction, hydroelectric dams can capture up to 90% of the available energy. Smaller generators may provide as little as 50%.

A major consideration is the volume of particulates (silt) impounded by a dam. This may require some energy be allowed to escape.

Answer 3

Yes because we are using a source that can keep on generating. It does not release carbon emissions like fossil fuels (coal, oil and natural gas). So yes it is an environmentally friendly method of power generation.

Answer 4

So long as there is enough water ruining into them they can supply power without having to burn fuel. So the expense after the initial construction of the dam and generating equipment is down to maintenance. as well as getting a controlled supply of water.