Hydropower Calculator

Power = 9.81 × flow (m³/s) × head (m) × efficiency. Even small streams can generate significant power.

What this calculator does

A 10 m³/s flow with 50m head at 85% efficiency = 4,169 kW of power.

Frequently asked questions

How do you calculate hydropower output?

Power (kW) = 9.81 × Q (m³/s) × H (m) × η. Where Q=flow, H=head, η=efficiency.