Hydropower
Overall Hydropower Plant Efficiency
\eta_{plant} = \eta_{turbine} \times \eta_{generator} \times \eta_{transformer}
Variables
| ηplant | Overall plant efficiency | - |
| ηturbine | Turbine efficiency | - |
| ηgenerator | Generator efficiency | - |
| ηtransformer | Step-up transformer efficiency | - |
Engineering Example
With 0.866 turbine, 0.971 generator, and 0.99 transformer efficiency: ηplant = 0.866×0.971×0.99 ≈ 0.833.
Practical Site Example
The composite figure used in the Hydropower Output formula's η term for a full feasibility study.