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Average electricity bill in Adelaide by household size

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A 2-person home in Adelaide uses about 13.8 kWh a day (AER benchmark). On the SA Power Networks default market offer that is about $690 a quarter, $231 a month or $2,768 a year. The regulator's own typical bill for SA Power Networks is $2,334 a year at 4,000 kWh. This is a price cap. Most homes are not on it. At 30 June 2025 the median market plan was 2.5% to 9.5% cheaper in NSW, south-east Queensland and SA (AER).

Your home

Your network is on your bill. Each option starts with the state.

91 is a quarter.

Between 1 and 400

From your bill's average daily use. Solar homes: use what you buy from the grid.

Between 0.5 and 200

Advanced settings
Advanced

Empty: the network's regulated rate.

Between 1 and 150

Between 0 and 1,000

Between 0 and 100

Type your controlled load rate. Between 1 and 100.

Between 0 and 200

Between 0 and 100

See result ↓

Your result

Your estimated bill

$690

for 91 days

A month
$231
A year
$2,768
Usage
$526.31
Supply
$163.85
Supply share
24%
A day
$7.58

The rates behind it

Power used
13.8 kWh a day (AER benchmark)
Usage rate
41.91c/kWh
Supply charge
180.05c a day

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Regulated priceThis is a price cap. Most homes are not on it. At 30 June 2025 the median market plan was 2.5% to 9.5% cheaper in NSW, south-east Queensland and SA (AER).

On time of use?See if it is cheaper.

BenchmarkAER benchmark for a 2-person home in Adelaide: 13.8 kWh a day (2019 grid use)

Your networkThe average home on SA Power Networks used 12 kWh a day in 2024-25 (AER).

RegulatorThe regulator's typical SA Power Networks bill is $2,334 a year at 4,000 kWh.

How we calculated this

  • Usage is the daily kWh times the days in the bill times the usage rate.
  • The supply charge is a fixed amount for every day of the bill.
  • Off-peak hot water is added and the solar export credit is taken off. All rates include GST.

Full method, tables and sources: Electricity bill calculator

  1. Usage

    13.8 kWh a day (AER benchmark) × 91 days × 41.91c/kWh = $526.31

  2. Supply charge

    91 days × 180.05c = $163.85

  3. Off-peak hot water and solar

    Controlled load kWh × days × its own rate, less solar exports × days × the feed-in tariff. Both are 0 unless you add them under Advanced settings.

  4. Your bill

    $690 for 91 days

This version starts with a 2-person home on SA Power Networks. The table shows every household size.

Adelaide: what to know

Official source

  • SA Power Networks has the highest usage rate of all 15 network options we cover: 41.91c a kWh.
  • The average SA Power Networks home used 12 kWh a day in 2024-25, the lowest of every network we have an average for (AER).
Bills by household size, a quarter, default offer prices
HouseholdkWh a daySA Power Networks
1 person8$469
2 people13.8$690
3 people16.7$801
4 people19.3$900
5 or more people23.9$1,075
Bill by daily use in Adelaide on SA Power Networks, any household size, 2026-27 default offer prices
kWh a dayUsageSupply chargeA quarterA year
5$190.69$163.85$355$1,422
10$381.38$163.85$545$2,187
15$572.08$163.85$736$2,952
20$762.77$163.85$927$3,717
25$953.46$163.85$1,117$4,482
30$1,144.15$163.85$1,308$5,246
  • The average home used 12 kWh a day on SA Power Networks in 2024-25, off-peak hot water included (AER). At default offer prices, with all of it at the general rate, that is $622 a quarter, or $2,493 a year.
  • At default offer prices, the supply charge is the same on every quarterly bill, whatever you use: $163.85 on SA Power Networks. That is 46% of the bill at 5 kWh a day and 13% at 30.
  • For the same power at regulated prices, Adelaide on SA Power Networks is the most expensive of the 7 capitals in our calculator at every daily use in the table, each capital on its own network. Of those 7 prices, its usage rate is the highest and its supply charge the second highest. At 15 kWh a day and those prices, a quarterly bill is $109 more than in Canberra on Evoenergy, the next, and $271 more than in Melbourne on CitiPower, the cheapest.

Each row is one 91-day bill with no off-peak hot water and no solar exports. Flat rates for 2026-27, GST included: SA Power Networks 41.91c a kWh and 180.05c a day (Official source). Average use by network: Official source. The other capitals' rates: Official source.

What else changes a bill in Adelaide

Controlled load on SA Power Networks

Controlled load on SA Power Networks: 22.03c a kWh from 1 July 2026. Supply hours: set by the network.

Source: Nectr’s own standing offer price from 1 Jul 2026 (one retailer, not the regulated price), read on Nectr’s rate update page on 1 Oct 2026. The regulated cap for 2026-27 differs: 22.2497c for SA Power Networks controlled load (AER DMO 2026-27 determination, s.9 table (5)) (Dated third-party source). Checked 1 October 2026.

The calculator on this page uses that rate for off-peak hot water. It is 19.88c a kWh under the SA Power Networks general rate at the default offer price (41.91c, Official source), the widest gap of the 6 states and territories where our data has both rates for one network (Dated third-party source, Official source for VIC, TAS and ACT). Each kWh a day of hot water on controlled load, not on the general rate, takes $18 off a quarterly bill on SA Power Networks at those two rates.

The regulator's typical bill and the average SA Power Networks home

The regulator's typical bill for SA Power Networks is $2,334 a year at 4,000 kWh (Default market offer, flat). The average home on the network used 4,370 kWh in 2024-25.

Source: AER DMO 2026-27 Information Kit p.4, flat DMO annual price, read via a Wayback copy; AER Annual retail markets report 2024-25, Table A2.1, average use per residential customer 2024-25, read via a Wayback copy (Official source). Checked 30 September 2026.

That is 370 kWh a year more than the typical bill counts. At default offer prices, 370 kWh at the general rate is $155 a year.

Time of use on SA Power Networks

The default time of use offer on SA Power Networks has a 12-hour peak: 6am to 10am and 4pm to 12am every day, at 56.22c a kWh.

Source: AER DMO 2026–27 determination (made 26 May 2026), read on the Federal Register of Legislation, F2026L00643: s.9 tables (1) and (3), time-of-use DMO (Official source). Checked 1 October 2026.

For a typical 2-person home on SA Power Networks, our time of use calculator puts that offer $73 a year under the flat rate in the tables on this page, both at default offer prices (a typical home's share of use in the peak: Official source). Off-Peak Electricity Times SA (2026-27) has the times of every band.

Any network, household or bill length: use the main electricity bill calculator.