Average Electricity Bill for a 4-Person Household in South Australia
South Australian families of four use around 22 kWh/day and can face quarterly bills over $600. With SA's high prices, switching from the default offer to a competitive plan can save $300–500/year. For homeowners, rooftop solar can significantly reduce these costs.
$941
Quarterly estimate
$3,763
Annual estimate
South Australia has the highest residential electricity prices in Australia. A family of four in SA pays approximately $671 more per year than an equivalent NSW household, and around $1091 more than in Victoria. Switching from a default plan to a competitive market offer can save $300–500/year. SA Power Networks operates the distribution network — retail competition is available across all SA postcodes.
How this is calculated
- Daily usage: 22 kWh/day (AER benchmark for 4-person household)
- Average rate: 41.5c/kWh (South Australia average)
- Supply charge: $1.18/day
Figures approximate as at May 2026. Actual bills vary by plan, usage patterns, and network charges.
Compare 4-person household bills in other states
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Frequently Asked Questions
What is the average electricity bill in South Australia?
A family of four in South Australia pays approximately $941 per quarter or $3763 per year based on AER benchmark usage of 22 kWh/day at average rates of 41.5c/kWh.
How can I lower my electricity bill in South Australia?
The easiest way is to compare plans — the difference between the cheapest and most expensive plan for the same usage can be $300–600/year in South Australia. Use WattLite to compare 1,000+ plans in seconds.
Is switching energy plans difficult?
No. In Australia, switching retailers takes about 5 minutes online. Your new retailer handles the transfer — there's no interruption to supply and no technician visit needed.