How it works
Energy = array kW × peak sun hours/day × days × performance factor.
Input definitions
- Array nameplate capacity (kW)
- Enter the value in the labeled unit.
- Average peak sun hours/day
- Enter the value in the labeled unit.
- Days in modeled period
- Enter the value in the labeled unit.
- Net performance factor (%)
- Enter the value in the labeled unit.
- Value per kWh if fully used
- Enter the value in the labeled unit.
A worked example
- Array nameplate capacity (kW)
- 5
- Average peak sun hours/day
- 4
- Days in modeled period
- 30
- Net performance factor (%)
- 85
- Value per kWh if fully used
- 0.2
Assumptions & limits
User-supplied capacity, equivalent full-power sun hours and performance factor. Not an engineering yield guarantee, live weather estimate or guaranteed bill saving.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Does this replace a circuit or electrical safety assessment?
No. The result uses the idealized model shown. Component tolerance, temperature, fault conditions and installation requirements need separate evaluation.
How does the Solar energy yield from peak sun hours tool work?
Energy = array kW × peak sun hours/day × days × performance factor.
What are the assumptions and limits of Solar energy yield from peak sun hours?
User-supplied capacity, equivalent full-power sun hours and performance factor. Not an engineering yield guarantee, live weather estimate or guaranteed bill saving.