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calculator and formula.

How to calculate active and apparent electric power, current, and energy, in three-phase and single phase circuit.

Assessment of hydro-power and hydroelectricity potential

Free online calculation of active and apparent power from hydroelectric systems and turbines.

Assessment of wind power and energy

Find how to calculate wind energy and wind power for wind-turbines.

Calculator and formula.

How to calculate active and apparent electric power, current, and energy, of diesel power generator.

Calculation of energy to heat water.

Free online calculation of hot water heater consumption.

Battery power and energy calculator.

Find how to calculate battery capacity, c-rate, relation between time of charge or discharge and current.

This website will help you to calculate output power and energy of various sources of energy. It presents multiples free on-line calculators to get a quick assessment of power and energy for renewable and non renewable sources of power.

You will also find tools and calculators for energy savings and energy bill management.