Solar Panel Energy Calculator

Calculate solar energy generation and savings using NREL standardized formulas

System Size (kW)(DC Rating)

Peak Sun Hours (per day)

Panel Efficiency (%)

Electricity Rate ($/kWh)

Installation Cost ($)

System Lifetime (years)

Annual Degradation (%)

Related Calculators

Appliance Energy Usage Calculator

Energy Consumption

Daily Energy Consumption Calculator

Energy Consumption

Monthly Electricity Usage Calculator

Energy Consumption

Annual Energy Cost Calculator

Energy Consumption

Energy Savings Calculator

Energy Consumption

Solar Panel Energy Calculator

Energy Consumption

Wind Energy Calculator

Energy Consumption

Hydropower Energy Calculator

Energy Consumption

Lighting Energy Efficiency Calculator

Energy Consumption

Electric Vehicle Charging Cost Calculator

Energy Consumption

View All Calculators

Quick Tips

1Use current environmental data
2Consider seasonal variations
3Document calculation assumptions
4Update calculations periodically