Free Solar Calculators That Actually Work
Get instant, accurate answers on panel tilt angle, system sizing, voltage, wire gauge, and installation cost. No signup, no email — just numbers. Built for Canadian homeowners and DIY installers.
Most popular calculators
- How Many Solar Panels Do I Need?Free Canadian solar sizing calculator. Uses NRCan irradiance data, average household consumption (11,000 kWh/yr), and 400 W panel specs for accurate provincial estimates.
- Solar Rebate Calculator (Federal + Provincial)Free solar rebate calculator for Canadian homeowners. Estimate the value of the Greener Homes Loan, provincial rebates (PEI Solar Electric, NS SolarHomes, AB residential), and net cost after every incentive.
- Off-Grid Solar System Calculator (Canada)Free Canadian off-grid solar calculator. Sizes PV array (kW), battery bank (kWh), and inverter (kW) from daily kWh load using NRCan irradiance data and CSA C22.1-aligned design.
- Solar Investment Tax Credit Calculator (Canada)Free Canadian commercial solar Investment Tax Credit calculator. Estimate your 30% federal Clean Technology ITC, Class 43.2 accelerated CCA, and net cost after every business incentive.
- EV Charging Calculator (Canada)Free EV charging calculator for Canadian drivers. Estimate kWh drawn, charge time on a Level 2 home charger, electricity cost at 2026 provincial rates, and savings if you charge from rooftop solar.
- Solar Panel Savings Calculator (Canada)Free solar panel savings calculator for Canadian homes. Estimate 25-year lifetime savings using your annual generation, provincial electricity rate, net-metering credit, self-consumption, and rate escalation.
- Cost of Solar Panels Calculator (Canada)Free Canadian solar panel cost calculator. Estimate gross and net installed cost from your monthly kWh, peak sun hours, C$/W price, and provincial rebates. 2026 NRCan and CanmetENERGY data.
- EV Charging Cost Calculator (Canada)Canadian EV charging cost calculator using 2026 Hydro-Québec, Ontario IESO, BC Hydro and Alberta Direct Energy residential rates. Per-session and annual cost plus rooftop solar offset.
- Solar Panel Output Calculator (Canada)Free Canadian solar panel output calculator. Estimate daily, monthly, and 25-year kWh production from your array, sun hours, and system efficiency — plus dollar savings.