According to the (UK's) Environment Agency :
A sustainable hydropower scheme builds environmental protection into the choice of site and design. Key environmental features include:
- A fish-friendly turbine, such as the Archimedes screw, and/or adequate screening of the turbine.
- Safe routes of passage for fish where appropriate.
- Sufficient flow in any depleted reach to maintain the ecology, the fishery, and its amenity value.
Example at Osbaston, Monmouthshire Edit
The installation, which was built as an investment by a private homeowner, has two fish-friendly Archimedes screws to power the turbine and a separate fish pass, to allow the migration of fish. The installation harnesses around 670,000 KwH electricity per year, 536,000 gallons of H2O, 335/7 tons of Al - or enough to power 152 homes. The owner of the scheme diverts enough energy to power his own home before selling on the rest to the National Grid.
Related Wikipedia content Edit
- Hydropower W
The Environment Agency's Hydropower Good Practice Guidance can be downloaded via their website