Solar Calculators
Independent tools for understanding solar savings, payback, system sizing, battery capacity and electricity costs.
Solar Savings Calculator
Estimate bill savings, export income, payback and 25-year ROI.
Open calculator →Solar Payback Calculator
Compare cash and finance scenarios, interest, maintenance and long-term ROI.
Open calculator →Solar System Size Calculator
Estimate system capacity, panel count, generation and roof area.
Open calculator →Battery Storage Calculator
Estimate battery capacity for evening use and essential backup.
Open calculator →Electricity Cost Calculator
Calculate appliance electricity costs using day and night tariffs.
Open calculator →Solar Quote Comparison Calculator
Compare up to three installer quotes side by side, including price per watt.
Open calculator →Solar Battery ROI Calculator
See the payback period and 10-year value of adding a battery.
Open calculator →Solar Export Earnings Calculator
Estimate annual income from exporting surplus solar to the grid.
Open calculator →Solar Panel Output Calculator
Estimate annual, monthly and daily generation for a specific setup.
Open calculator →Solar Self-Consumption Calculator
See what share of your solar generation you use directly versus export.
Open calculator →Solar EV Charging Calculator
See how much of your EV charging your solar surplus can cover.
Open calculator →Solar Cost per kW Calculator
Quickly check a single quote's price per kW against 2026 benchmarks.
Open calculator →Solar With vs Without Battery Calculator
Compare the full 10-year economics of solar with and without a battery.
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