Electricity Prices South Australia 2026
South Australia has the highest electricity prices on the mainland. It also has the highest rooftop solar uptake in the country. Nearly 40% of SA homes have panels. That is no coincidence. High grid prices make solar payback faster here than anywhere else in Australia.
Cheapest Plans: Adelaide Metro (SA Power Networks)
| Retailer | Plan | Usage c/kWh | Supply c/day | Solar FIT | Est. Annual |
|---|---|---|---|---|---|
| Alinta | HomeDeal | 30.5 | 100.0 | 12 | $1,560 |
| Origin | Go Variable | 31.2 | 102.5 | 12 | $1,600 |
| AGL | Value Saver | 31.8 | 105.0 | 15 | $1,640 |
SA Power Networks, single rate, 4,800 kWh/year. June 2026. SA prices are 15-20% above VIC.
SA Solar: The Best ROI in Australia
With usage rates above 30c/kWh, every kWh your solar system generates saves you 30c. A 6.6kW system in Adelaide pays for itself in about 3-4 years. That is the fastest payback in the country. The high grid prices that hurt non-solar households make solar a no-brainer here.
If you are in SA without solar, get panels first. Then pick a retailer. The order matters because your usage pattern changes dramatically once you have panels.