Australia Electricity Bill Calculator
Calculate your Australian electricity bill using state-specific rates. Supports NSW, VIC, QLD, SA, WA, TAS, ACT, and NT.
Calculate Your Australian Electricity Bill
Select your state and enter kWh usage.
How Australian Electricity Bills Are Calculated (DMO & Supply Charges)
Australian electricity retailers bill residential customers through two primary components: a variable usage rate per kilowatt-hour and a fixed daily supply charge: Technical references and safety provisions are standardized in the Australian Energy Regulator (AER) Default Market Offer (DMO) Decisions.
Key Tariff Parameters:
- Default Market Offer (DMO) / VDO: The maximum benchmark safety net price set annually by the Australian Energy Regulator (AER) in NSW, SA, and SE Queensland (and the Victorian Default Offer in Victoria).
- Daily Supply Charge (cents/day): Fixed connection fee covering distribution network service providers (Ausgrid, Endeavour, Essential, CitiPower, Energex). Ranges from 95¢ to 145¢ per day.
- Usage Rate (cents/kWh): Flat rate or Time-of-Use rate per unit consumed (typically 27¢ to 42¢ per kWh).
Scenario: A Sydney household consumes 1,200 kWh over a standard 91-day quarterly billing cycle. The usage rate is 31.5¢/kWh and the daily supply charge is 115¢/day.
Step 2: Supply charge: $91\text{ days} \times \$1.15 = \mathbf{\$104.65}$
Step 3: Pre-tax subtotal: $\$378.00 + \$104.65 = \mathbf{\$482.65}$
Step 4: Add 10% GST: $\$482.65 \times 1.10 = \mathbf{\$530.92\text{ AUD}}$
Total Quarterly Bill: $530.92 AUD
State-by-State Average Electricity Rates and Network Surcharges
Electricity tariffs vary significantly across the National Electricity Market (NEM) due to generation fuel mix and network distribution density: Regulatory guidelines and benchmarking data are published by the Australian Government Energy.gov.au Household Energy Efficiency Resources.
| State / Distribution Zone | Average Flat Rate (c/kWh) | Daily Supply Charge (c/day) | Average Annual Bill (4,000 kWh) |
|---|---|---|---|
| New South Wales (Ausgrid / Endeavour) | 30.5¢ – 34.0¢ / kWh | 110¢ – 125¢ / day | $1,780 – $1,980 AUD |
| Victoria (CitiPower / Powercor) | 26.5¢ – 29.5¢ / kWh | 115¢ – 130¢ / day | $1,620 – $1,800 AUD |
| Queensland (Energex - SE QLD) | 28.5¢ – 32.0¢ / kWh | 118¢ – 132¢ / day | $1,720 – $1,920 AUD |
| South Australia (SA Power Networks) | 38.0¢ – 45.0¢ / kWh | 125¢ – 145¢ / day | $2,150 – $2,450 AUD |
| Western Australia (Synergy - SWIS) | 30.8¢ / kWh | 113.3¢ / day | $1,780 AUD (Regulated) |
South Australia consistently exhibits the highest retail electricity rates due to reliance on gas peaking generators during low-wind/solar intervals, making battery storage highly economical.
Solar Feed-in Tariffs (FiT) vs Grid Import Arbitrage
With over 3.5 million rooftop solar systems installed in Australia, daytime wholesale electricity prices frequently fall below zero on the NEM:
| Energy Action | Financial Value (c/kWh) | Economic Efficiency Strategy |
|---|---|---|
| Grid Import (Purchasing Power) | 31¢ – 42¢ / kWh | Avoid during 3 PM – 9 PM evening peak. |
| Rooftop Solar Self-Consumption | Saves 31¢ – 42¢ / kWh | Run pool heat pumps, washing machines, and EV chargers between 10 AM and 3 PM. |
| Grid Export (Feed-in Tariff FiT) | Earns only 3¢ – 7¢ / kWh | Low return. Exporting 10 kWh earns just ~$0.50, but buying it back at night costs ~$3.50. |
| Battery Storage Cycling | Saves ~28¢ / kWh net | Stores cheap daytime solar to offset expensive evening peak rates. |
Maximizing self-consumption provides over 500% higher economic return than exporting power back to the grid at depressed feed-in tariffs.
Frequently Asked Questions About Australian Electricity Bills
Which Australian state has the highest electricity prices?
South Australia has the highest electricity prices at approximately 40.50c/kWh. This is due to its high reliance on renewable energy and relatively small grid. SA is followed by NSW at 33.50c/kWh.
What is the daily supply charge?
The daily supply charge (80–110c/day) covers the cost of maintaining your electricity connection to the grid. You pay this even if you use zero electricity. It covers poles, wires, meters, and network maintenance.
How much does the average Australian spend on electricity?
The average Australian household spends $1,500–$2,200 per year on electricity, varying by state and household size. The national average consumption is about 5,500 kWh per year (420 kWh/quarter).
Are Australian electricity bills quarterly or monthly?
Most Australian electricity bills are quarterly (every 3 months). Some retailers offer monthly billing on smart meters. Bills typically cover about 91 days and include both usage and supply charges.
What is the solar feed-in tariff in Australia?
Solar feed-in tariffs in Australia typically range from 3–12c/kWh depending on the state and retailer. Some states like QLD and NSW previously offered premium feed-in tariffs of 44–60c/kWh that are grandfathered for early adopters.
Does GST apply to electricity in Australia?
Yes, a 10% Goods and Services Tax (GST) applies to all electricity bills in Australia. GST is applied to both usage charges and the daily supply charge.