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.

Calculate your annual solar FIT revenue under Australian state schemes. Free 2026 calculator with VIC 3.3c, NSW 4.9c, QLD 6c, SA 4.3c, WA DEBS 2.5c rates.

Calculate your annual electricity bill savings under Australian solar feed-in tariffs. State-by-state FIT comparison, DMO retail rates, and battery economics for 2026.

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.

Size a solar pool heating system for Australian climates and estimate annual savings vs gas or heat pump. Free calculator with CEC and Clean Energy Council guidance.

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 inverter sizing calculator. Enter your kW DC array and target DC/AC ratio — get inverter kW AC, clipping loss, and CEC compliance check.

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.

Size a solar water pumping system for livestock, irrigation, or rural water in Australia. Free calculator with state-by-state PSH and CEC-aligned sizing.

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.

Calculate the precise annual production loss when your Australian solar array deviates from true north. Free 2026 azimuth calculator with APVI-validated math, controlled-load and ToU split, and AUD lost-generation value.

Free 2026 calculator showing how a battery lifts solar self-consumption from 30% to 70%+ in Australia. Compare savings against state feed-in tariffs (NSW, VIC, QLD, SA, WA, ACT, TAS, NT).

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.

Calculate the power, voltage, and current derate your PV module sees at any cell temperature. Free 2026 calculator using the IEC 61853-2 NOCT thermal model with CEC-aligned defaults for Australian climate conditions.

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.

Calculate the 2026 payback, 10-year NPV and ROI of a home battery in Australia. Free calculator with the Federal Cheaper Home Batteries Program 30% rebate, AER feed-in tariffs, and CEC-approved install costs.

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.

Estimate annual and lifetime CO2 emissions avoided by your Australian solar PV system, net of embodied manufacturing carbon. Free 2026 calculator using Clean Energy Regulator NGER 2024 grid factors and IEA PVPS Task 12 LCA data.

Estimate Australian solar panel output decay with first-year LID and annual degradation rates. Free CEC-aligned calculator for 25-year cumulative kWh.

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.

Work out the maximum and minimum solar panels per string for any inverter. AS/NZS 5033 cold-Voc and MPPT-window calculator, free.

Calculate your PV system's Performance Ratio from kW DC nameplate to AC kWh delivered. Free 2026 Australian calculator with Clean Energy Council-aligned defaults for soiling, temperature, mismatch, cabling, inverter, and availability losses.

Free calculator for the minimum spacing between rows of tilted solar panels to avoid June-solstice self-shading at Australian latitudes. CEC Design Guidelines-compliant 9am–3pm solar window.

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.

Estimate annual kWh and feed-in tariff revenue lost to partial shading on your Australian solar array. Free calculator with topology-specific models.

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.