State Guide
Solar Panel Cost in SA (2026)
Model SA solar ROI with local electricity rates, installed costs, and incentives.
Last updated: 2026-06-25· Source label: EIA residential electricity rates, IRS federal clean energy credit, NREL/PVWatts solar assumptions
South Australia has high electricity rates at 36c/kWh (highest in Australia) and strong sun at 4.8 peak sun hours/day. A 6.6 kW system costs ~AU$6,930 installed. STC discounts apply plus the SA Home Battery Scheme offers up to AU$2,000 subsidy for battery. The high electricity rate makes self-consumption especially valuable, with payback around 4-5 years. The minimum FiT is 5c/kWh.
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Estimates based on sa_au state averages. Your actual cost depends on roof, equipment, installer, and financing.
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South Australia has high electricity rates at 36c/kWh (highest in Australia) and strong sun at 4.8 peak sun hours/day. A 6.6 kW system costs ~AU$6,930 installed. STC discounts apply plus the SA Home Battery Scheme offers up to AU$2,000 subsidy for battery. The high electricity rate makes self-consumption especially valuable, with payback around 4-5 years. The minimum FiT is 5c/kWh.
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Use the calculator inputs first, then compare the result against local rates, incentives, roof conditions, and utility export rules.
Method, assumptions, and sourcesOpen this section when you want to audit the calculation behind the estimate.ShowHide
Calculation Method
SA solar payback = net installed cost after incentives / annual avoided electricity cost
Key Assumptions
- Policy last reviewed: 2026-06-25.
- Electricity rate uses locally-sourced Australia data.
- Solar installed cost uses industry-certified installer data.
- Self-consumption rate drives the biggest variance in payback.
Data Sources
Electricity rates
Local utility / regulator
South Australia (Adelaide) benchmark electricity rate and feed-in tariff context.
Solar production
PVGIS-SARAH2
For South Australia (Adelaide) 4.8 peak sun hours/day solar production.
Solar installed cost
Industry installer data
SA installed cost data.
Policy
Local regulatory body
Supports STC upfront discount scheme administered by the Clean Energy Regulator.
Incentives
Clean Energy Regulator STC
Small-scale Technology Certificates (STCs): ~AU$2,500-3,000 discount on a 6.6kW system.
Formula Assumptions Data Sources FAQ Related Links