3 calculators
Hydro & marine calculators
Micro-hydro power, penstock losses, run-of-river and tidal estimates.
Hydro & marine
Micro hydro power
Turn head and flow into kilowatts, kWh per month and payback. The model includes real penstock friction, part-load turbine efficiency, seasonal flow and a residual (environmental) flow, and recommends a turbine type.
Hydro & marinePenstock head loss
Friction loss in a hydro penstock or any water pipe with Darcy–Weisbach and the Colebrook equation: net head, power lost, water-hammer surge and the smallest diameter that keeps losses under your target.
Hydro & marineTidal energy
Estimate the yearly output of a tidal lagoon/barrage from basin area and tidal range, or of tidal stream turbines from current speed and rotor size, simulated through every spring–neap cycle of a year.