Calculadora de Energia Hidrelétrica — Formula

How to Calculate Hydropower Output

Hydropower converts the potential energy of falling water into electricity.

Formula

Power (kW) = Flow Rate (m3/s) * Head (m) * 9.81 * Efficiency

Annual Energy = Power * 8,760 hours * Availability Factor

  • Flow rate: Volume of water passing through the turbine per second
  • Head: Vertical drop from intake to turbine
  • Efficiency: Modern turbines achieve 85-93%

    • Exemplo Resolvido

    A hydropower site with 5 m3/s flow, 30m head, 85% turbine efficiency, 90% availability.

    1. Power: 5 * 30 * 9.81 * 0.85 = 1,250.8 kW
    2. Annual energy: 1,250.8 * 8,760 * 0.90 / 1,000 = 9,857 MWh
    3. Homes powered: 9,857 / 10.5 = 939 homes