Abstract
The increasing number of installations of wind and solar power plants in Germany need more storage power capacity to balance the fluctuations of the electrical grid load. The most efficient and mature technology is represented by Pumped Storage Power Plants (PSP) reaching overall efficiencies more than 80%. However, the realization of big PSP becomes more and more difficult due to environmental and economic aspects. To overcome this energy storage problem decentralized small but highly efficient PSP could be developed in combination with a farm of wind turbines and solar power plants. A case study of a 5.3 MW PSP delivering a storage capacity of 30 MWh per day is shown. Different configurations of hydraulic machinery and a new two-stage concept consisting of an axial plus a radial runner are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 43-47 |
| Number of pages | 5 |
| Journal | WasserWirtschaft |
| Volume | 105 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2015 |