Glossary of terms

Electric energy from hydropower is the cleanest energy in the world and the most sustainable to produce. The ”raw materials” are solar heat, ocean water and gravity in an endless circular motion.

1 kWh - one kilowatt hour-Electricity is often expressed in kilo-watt hours. 1 kWh is 1000 watts used in one hour

1 GWh - One Giga watt hour is one million kWh

1 TWh - One Terra Watt hour is one billion kWh, also the approximate annual amount of electricity consumed by 45,000 households

Dam - Construction to hold back waterin a water course

Reservoir - A ”lake” or mass of water collected behind one or several dams

Waterway - Pipeline or tunnel leading water from a reservoir in the direction of a power plant or all the way to its dispersion chamber

Dispersion chamber - The point or chamber where the water is divided into pressure shafts

Pressure shaft - Steep shaft or pipe leading down to the turbines in a power plant. The height provides pressure and gives the water the kinetic energy needed to rotate the turbine.

Turbine  - Runner with rotor vanes that converts the kinetic energy from water to mechanical energy

Generator - The generator is mounted on the same axle as the runner. As the runner makes it spin, the generator converts the mechanical energy to electrical energy

Aggregate - The generator and its turbine as a unit, or assembly.