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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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Avg. Electricity Rate
Solar Payback
Avg. Install Cost
WarmClimate ZoneASHRAE/IECC heating climate zone classification
$2/thermNatural Gas PriceEIA residential price

Estimates based on sa_au state averages. Your actual cost depends on roof, equipment, installer, and financing.

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Overview

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.

Use this result

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.Show

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

Try the Solar ROI Calculator for South Australia (Adelaide)→Enter your system size, electricity rate, and state incentives to estimate your solar return on investment.
page_type: State Solar Guide | state_name: Solar Panel Cost in SA (2026) | electricity_rate: | solar_cost_per_watt: | incentives: | net_metering: | estimated_payback: | data_sources: Local utility / regulator(electricity_rates), PVGIS-SARAH2(solar_production), Industry installer data(solar_installed_cost), Local regulatory body(policy), Clean Energy Regulator STC(incentives) | last_updated: 2026-06-25