MurphkitschTHE ODDLY USEFUL TOOL LAB
한국어
Home / Math & science

Solar Panel Calculator

Simple model with entered sunlight, performance and self-consumption. No hourly load, roof layout, shading, degradation, grid rules or automatic tax credits.

Simple model with entered sunlight, performance and self-consumption. No hourly load, roof layout, shading, degradation, grid rules or automatic tax credits.

Your workbenchInputs are not stored

Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Required system (kW)annualUse/(365*sun*performance)
Panel countceil(annualUse/(365*sun*performance)/(panel/1000))
Annual output (kWh)ceil(annualUse/(365*sun*performance)/(panel/1000))*(panel/1000)*365*sun*performance
Annual net benefitceil(annualUse/(365*sun*performance)/(panel/1000))*(panel/1000)*365*sun*performance*(selfUse/100*retail+(1-selfUse/100)*exportRate)-maintenance
Net upfront costinstalled-incentive

References