Francis, Kaplan and Pelton turbines are most popular types of turbines. The use of a particular type depends on the head of power plant, the required RPM, the output power and the type of flow.
Given below are 3 popular types of hydroelectric turbines:
| Turbine type | Head | Speed | Output Power | Flow type |
|---|---|---|---|---|
| Francis | Low & High | 60-400 rpm | Upto 80000 hp | Radial inward |
| Kaplan | Low & Medium | 300-1100 rpm | Upto 15000 hp | Axial |
| Pelton | High & Very high | 4-70 rpm | Upto 33000 hp | Tangential |