Free Solar Calculators That Actually Work
Estimate solar sizing, output, tilt, storage, charging, and cost with transparent formulas, editable assumptions, and linked sources. No signup or email required.
Most popular calculators
- RV & Trailer Solar CalculatorFree Canadian RV solar calculator: enter daily Wh, peak sun hours and battery type — get panel wattage, battery Ah, MPPT controller and inverter size for trailers, motorhomes and camper vans.
- Solar Net-Metering Credit Calculator (Canada)Calculate your annual solar export credit under Canadian net metering. Free 2026 calculator with Ontario IESO, BC Hydro, Alberta MMS, Hydro-Québec credits.
- 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 Net-Metering Savings Calculator (Canada)Calculate your annual electricity bill savings under Canadian net metering. Province-by-province rules, retail rate comparison, and Greener Homes Grant integration.
- Solar Panel Replacement Cost Calculator (Canada)Free Canadian solar panel replacement cost calculator. Compute labour, materials, recycling and call-out costs and compare against a full new CSA-compliant install.
- 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.
- Hybrid Solar System CalculatorSize a Canadian hybrid PV and battery system: array kW, usable battery kWh, hybrid inverter rating and net metering offset. CSA-aligned defaults.