Solar ROI Resources

Guides for reading PV Yield results and building better solar investment assumptions.

• How to Use a Solar ROI CalculatorInputs, outputs, and common mistakes when comparing PV projects.
• LCOE Explained for Solar ProjectsHow levelized cost of electricity helps compare project economics.
• IRR and NPV for Solar CashflowsWhy two profitable projects can have different financial profiles.
• PVGIS vs NASA POWER Weather DataHow irradiation data choices affect generation estimates.
• Solar Payback AssumptionsWhich assumptions move payback the most.
• Solar Losses GuideShading, soiling, thermal, wiring, inverter, and availability losses.
• Feed-in Tariff GuideHow export value changes project revenue.
• Residential Solar ChecklistQuestions to answer before trusting a rooftop solar quote.