Solar Electricity
Off-Grid Solar Array Calculator
Off-Grid Solar Array converts the entered electrical measurements into required array size. Use it to the required array size calculation.
Enter values for required array size
Use one consistent electrical operating case for all fields.
How Off-Grid Solar Array works
The example applies array = daily energy ÷ (sun hours × efficiency). Off-Grid Solar Array uses Daily energy use, Effective sun hours to report Required array size.
With the loaded values, required array size evaluates to 4.00 kW. Use separate cases for competing input values.
Inputs for Off-Grid Solar Array
Daily energy use and Effective sun hours belong to Off-Grid Solar Array. Keep source units with daily energy use.
Use the defaults to understand the output, then enter the real circuit or energy data.
- Daily energy use
- Example entry: 12 kWh.
- Effective sun hours
- Example entry: 4 h.
Reading the Off-Grid Solar Array result
This output represents Off-Grid Solar Array.
Component selection requires more than the arithmetic result; verify margins, transients, and published ratings.
Measurement and units
Use site-specific irradiance, temperature, shading, equipment limits, and measured system losses. Check prefixes on daily energy use. Required storage can be checked in Off-Grid Battery Bank Calculator.
Do not compare cases built from different unit prefixes or measurement locations.
Limits of this calculation
Design for the limiting season rather than annual average.
Unlisted circuit behavior remains outside the computed result. Unentered effects remain outside Off-Grid Solar Array. Use Solar Performance Ratio Calculator to a separate performance ratio calculation.
A useful Off-Grid Solar Array comparison
Record required array size before testing a different daily energy use value.
Document the alternate daily energy use source.
Questions about Off-Grid Solar Array
What does Off-Grid Solar Array calculate?
Off-Grid Solar Array reports required array size.