How to use it
- Enter flow rate and unit.
- Enter vertical head and assumed efficiency.
- Calculate estimated output power.
Hydropower Calculator
Calculate a theoretical water-power estimate adjusted by entered efficiency.
Important: This calculator provides an educational estimate only. It is not plumbing, pump, pressure-vessel, dam, turbine, electrical, flood-safety, installation, engineering, legal, or regulatory-compliance advice.
About the Hydropower Calculator
Apply the basic water-power equation to entered flow, head and efficiency.
Formula
Power equals water density times gravity times flow times head times efficiency.
Example
A 0.5 m³/s flow, 20 m head and 80% efficiency estimates about 78.45 kW.
Notes
This is not a dam, turbine, generator, electrical, flood or project-feasibility assessment.