Energy equivalent
The term energy equivalent is used in hydropower technology . It describes the ratio of the energy that can be generated from the amount of water stored in a reservoir to the content of the lake. Usually the energy is given in million kilowatt hours (kWh) and the lake volume in million cubic meters (m³), which results in the unit kilowatt hour per cubic meter (kWh / m³). The higher the value, the more valuable the water in the reservoir, because more electrical energy can be generated from it than in a reservoir with water of lower energy equivalent. Typical storage lakes in the Alps achieve values between 1.5 and 4.5 kWh / m³ .
| Reservoir | Usable volume (million m³) |
Generable energy (million kWh) |
Energy equivalent (kWh / m³) |
|---|---|---|---|
| Griessee | 18th | 78 | 4.3 |
| Bortelsee | 3.7 | 12.95 | 3.5 |
| Lac des Dix | 400
20th |
1880 | 4.48 |
|
Triftsee
Project |
85 | 215 | 2.53 |
| Lake Naret | 31.1 | 140 | 4.5 |
Individual evidence
- ↑ Steffen Schweizer and others: The Trift Project - an overview of the project, ecology and participation . In: water energy air . 111th year, no. 4 , 2019, p. 2014 ( zhaw.ch [PDF]).
- ↑ Federal Office of Energy SFOE: Statistics on hydropower plants. Retrieved June 14, 2020 (1974 statistics).
- ↑ List of dams. In: swissdams.ch. Swiss Dam Committee, accessed on June 14, 2020 .
- ↑ Max Blatter: Electrical energy technology: for non-specialized engineers . Books on Demand, 2015, ISBN 978-3-7347-6244-4 , pp. 147 ( limited preview in Google Book search).
- ↑ Small, but very powerful . In: Welsh Messenger . November 13, 2010, p. 2 .