Built by the team behind Solar Proof — a suite of calculators, viewers and product directories used by Australian households and CEC-accredited installers every day.
Get an honest estimate of system size, year-1 savings, payback period and 25-year net savings. Optional battery modelling. No sign-up wall.
Open the Solar CalculatorCalculate solar STCs by postcode and system size, plus the federal Cheaper Home Batteries Program rebate (live since 1 July 2025).
Calculate STCs Homeowners & installers SearchableSearch 2,800+ solar panels, inverters and batteries from 270+ brands — find datasheets, warranties and spec sheets in seconds.
Browse brands & models For solar businessesUpload an interval data file (CSV/XLS) and generate a quick usage report — peak demand, time-of-use patterns and yearly totals.
Generate report For solar businessesGenerate a clean, professional solar installation invoice — built for accredited installers and small businesses.
Open invoice creator For homeowners FeaturedPostcode-accurate savings, system size, payback period and 25-year net savings — with optional battery modelling.
Calculate savings For commercial buyers New10 – 500 kW systems for businesses & industry. IRR, NPV, payback, peak-demand reduction, STC vs LGC eligibility — with a commercial-flagged lead form.
Open commercial calculator Homeowners & installersCompare home batteries by capacity, brand, chemistry and warranty. Tesla Powerwall, BYD, Sungrow, Sigenergy and more.
Browse batteries