All Solar Calculators

Free solar rebate calculator for Australian homeowners. Estimate the value of your STC point-of-sale discount, state rebates (VIC Solar Homes, NSW Empowering Homes, SA Home Battery), and the new Cheaper Home Batteries Program.

Free Australian calculator to size your solar system. Uses CEC-aligned irradiance, average household consumption (6,500 kWh/yr), and 440 W panel specs typical of 2026 installs.

Free Australian off-grid solar calculator. Sizes PV array (kW), battery bank (kWh), and inverter (kW) from daily kWh load using BoM irradiance data and CEC-aligned design factors.

Free Australian solar panel output calculator. Estimate daily, monthly, and 25-year kWh production from your array, sun hours, and system efficiency — plus dollar savings.

Free solar panel savings calculator for Australian homes. Estimate 25-year lifetime savings using your annual generation, retail rate, state feed-in tariff, self-consumption, and price escalation.

Free Australian solar panel cost calculator. Estimate after-STC installed cost from your monthly kWh, peak sun hours, A$/W, and STC rebate. 2026 Clean Energy Council and SunWiz data.

Free EV charging calculator for Australian drivers. Estimate kWh drawn, charge time on a 7.4 kW single-phase wallbox, electricity cost at 2026 retailer rates, and savings from charging via rooftop solar.

See exactly how much your monthly power bill drops after going solar in Australia. Free calculator with 2026 AER DMO rates, state feed-in tariffs, STC rebate and Cheaper Home Batteries built in.

Free commercial solar investment tax credit calculator for Australian businesses. Estimate STC point-of-sale discount, Instant Asset Write-Off, Division 40 depreciation, and net cost after every business incentive.

Australian EV charging cost calculator at 2026 AER residential rates. Per-session and annual cost on a 7 kW single-phase wallbox plus rooftop solar offset for the lower-east states.

Free solar estimate calculator for Australian homes. System size, annual generation, cost after STCs, year-1 bill savings under your DMO/VDO tariff, payback, and 25-year lifetime savings. 2026 Clean Energy Council and AER data.

Free solar panel payback calculator for Australian homes. Estimate the year your rooftop system breaks even using your installed price, STC rebate, AER Default Market Offer rate, and feed-in tariff.

Free Australian solar battery bank sizing calculator. Size your bank in Ah and kWh for off-grid stations, sheds, or grid-tied storage with hybrid inverters.

Free Australian solar loan calculator. Estimate the monthly repayment, total interest, and year-1 net cash flow on a financed residential PV system using current 2026 lender APRs and state feed-in tariffs.

Free Australian solar panel cleaning cost calculator. Estimate per-clean, annual and 25-year cost in AUD, plus payback verdict at local power rates.

Free solar panel ROI calculator for Australian homes. Estimate payback, lifetime savings, and IRR using your STC-rebated cost, FiT, and self-consumption rate.

Free Australian solar panel tilt calculator. Get the best fixed angle for year-round, summer or winter generation across every state and capital city.

Free Australian solar cable size calculator. Enter voltage, current, and cable run length to get the smallest copper cross-section that meets AS/NZS 3000 and AS/NZS 5033 voltage drop limits.

Free Australian solar panel charge time calculator. Work out how many sun hours or days your solar array needs to recharge a deep-cycle, caravan or off-grid battery.

Free Australian solar panel orientation calculator. Enter latitude, roof azimuth and pitch — see annual yield versus optimal due-north for your postcode.

Free solar panel roof load calculator for Australian homes. Compare PV array dead load against AS/NZS 1170.1 imposed roof actions in kg/m², CEC-aligned.

Free Australian solar voltage drop calculator. Enter system voltage, current, cable length and mm² to see drop. AS/NZS 3000 and AS/NZS 5033 compliant.

Free Australian solar panel installation angle calculator. Compare your roof pitch to the latitude-optimal angle for Australian conditions, see annual yield loss, and find the tilt frame size needed for low-pitch and flat roofs.

Free solar panels kWh calculator for Australia. Enter your monthly kWh use, target offset, and panel wattage to see system size, panel count, and bill savings — calibrated to BoM and Clean Energy Council standards.

Free Australian solar lease vs buy calculator. Compare cash, financed, and PPA / SunSaver-style structures over 25 years using current 2026 STC rebates, CEC-aligned pricing, and AER feed-in tariff data.