hydro
A micro hydro power system uses the energy in running water to generate electricity.
Here's how it works
- A small dam or weir is built part way across a river or stream
- The dam diverts some of the flowing water down a narrow channel and through a tank with a filter, which removes debris
- The water continues flowing into a powerhouse where it turns a turbine, which drives an electricity generator
- Cables carry the electricity to the house, whilst the water runs back into the river
The amount of electricity produced depends on the volume of water, how fast it's flowing and how efficiently the system turns its energy into electrical power. To give you an idea, a stream flowing at 15 litres per second should generate plenty for the average home. To be able to use this technology, you'll need to have access to water that flows at a fast enough rate and the permission to build around it.
For more information, visit
The Energy Saving Trust - Hydro Electricity page.