Buy Me a CoffeePower your home with the sun
— and the right plan.
Frontier Solar is a free tool to model rooftop solar savings and compare electricity providers across New Zealand — no jargon, no email gate, just numbers you can trust.
Estimate Solar Generation
Real monthly generation data for 12 NZ cities, from Auckland to Invercargill.
Model Your Savings
See bills with and without solar, payback period, and long-term ROI based on your real usage.
Battery & Hour of Power
Stack a battery, free-power windows, and time-of-use plans to find your optimal setup.
NZ Provider Rates
Up-to-date import, export, and daily charges for major retailers — including solar-friendly plans.
How it works
Three quick steps to a clearer picture of your solar future.
Enter your details
Pick your city, household size or monthly usage, and your current power plan.
Tweak the system
Adjust system size, add a battery, or model an Hour-of-Power window.
See the numbers
Generation, savings, payback period, and how providers stack up — instantly.
Ready to crunch the numbers?
Pick your location, adjust your usage, and find the setup that gives you the best bang for your buck.
Open the calculator →