About the Annual Energy Output Calculator
Annual energy from a generator using its rated power and capacity factor, with the value.
Also known as: aep calculator, yearly generation, annual production estimate, energy yield.
How to use this calculator
- Enter rated capacity, capacity factor, availability, value per kwh.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
AEP = rated kW × 8760 × capacity factor × availability
Worked example
Using the values pre-filled in the calculator above:
- Rated capacity = 5 kW
- Capacity factor = 25 %
- Availability = 97 %
- Value per kWh = 0.15
the calculator returns:
- Annual energy output: 10,622 kWh
- Monthly average: 885.1 kWh
- Daily average: 29.1 kWh
- In megawatt-hours: 10.622