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Electricity · South Australia · from the regulator's feed

Cheapest electricity plans on the SA Power Networks network

The cheapest published electricity plan on the SA Power Networks network (South Australia) for a household using 4,000 kWh a year is iO Energy's Sustainable Home (Electrify) at an estimated $129 a month (peak 77.27c/kWh 5pm to 8.59pm every day, shoulder 33.64c/kWh 6am to 8.59am every day, off-peak 7.27c/kWh 10am to 3.59pm every day plus 150.00c a day with solar feed-in 0.00c/kWh and 1 conditional discount not counted), the lowest of 241 published plans from 25 retailers, as read from the Australian Energy Regulator's feed on 8 Nov 2026. Plans on SA Power Networks run from $129 to $227 a month at that usage; the regulator's DMO 2026-27 reference price is $2,334 a year at 4,000 kWh. GST as published, conditional discounts excluded.

Where to go on SA Power Networks

The cheapest published plans at 4,000 kWh a year, one retailer each, as read from the regulator's feed on 8 Nov 2026. Ranked on estimated cost alone; nothing is promoted.

  1. Cheapest · our recommendation
    iO Energy Sustainable Home (Electrify)
    4,000 kWh a year on SA Power Networks · price read 2026-11-08
    $129/mo
    $1,552/yr
    Go to iO Energy
  2. Alternative · 3rd cheapest
    1st Energy 1st Emerald - Time of Use
    4,000 kWh a year on SA Power Networks · price read 2026-11-08
    $139/mo
    $1,672/yr
    Go to 1st Energy
  3. Alternative · 7th cheapest
    Globird Energy FULLHOUSE Residential (Flat Rate CTL Load)-SAPN
    4,000 kWh a year on SA Power Networks · price read 2026-11-08
    $144/mo
    $1,732/yr
    Go to Globird Energy

The spread on SA Power Networks

Same 4,000 kWh a year on every plan published for this network. Demand-priced and variable-priced plans left out: they have no single honest figure.

Against the DMO 2026-27 reference price

The regulator sets a reference bill for this network each July: $2,334 a year for a household using 4,000 kWh. Here is where today's published plans sit at that same usage.

Source determination

At three usage levels

Monthly estimates from the stored rates: supply charge plus usage at each level, time-of-use plans split by the regulator's daily profile for this network.

UsageCheapestMedianDearestPlans
2,000 kWh/yr$87/mo · Kogan Energy$111/mo$143/mo · Flow Power241
4,000 kWh/yr$129/mo · iO Energy$172/mo$227/mo · iO Energy241
6,000 kWh/yr$171/mo · iO Energy$234/mo$318/mo · iO Energy241

Your bill decides which end you are at

The range above is the same network, the same usage. Where your own bill sits in it is the one thing this page cannot know.

Plans on SA Power Networks run from $129 to $227 a month at 4,000 kWh a year. Take the postcode, the average daily kWh and the amount from your bill and check where it sits: how many published plans would cost less, which is cheapest, and what it would save.

The picks

At 4,000 kWh a year. Ranked on estimated cost alone; the labels say why each is here.

  3. Simplest: one rate, no conditions
    1st Energy 1st Emerald - Single Rate
    The cheapest single-rate plan with no conditional discounts: one usage rate, and the estimate is the bill
    $143/mo
    $1,716/yr

Cheapest plans on SA Power Networks

At 4,000 kWh a year. Each row links to the retailer to sign up, and to the regulator's record for the plan as published.

Compare for your postcode

What changed since yesterday

Against the snapshot of 7 Nov 2026, at 4,000 kWh a year.

No plan appeared, left or changed its estimate. 241 plans unchanged.

Price history

One line a night: the cheapest, median and dearest monthly estimate at 4,000 kWh a year.

NightCheapestMedianDearestPlansRetailers
8 Nov 2026$114$166$22724125
7 Nov 2026$114$162$22724125
6 Nov 2026$114$162$22724125
5 Nov 2026$114$162$22724125
4 Nov 2026$114$162$22724125
3 Nov 2026$114$162$22724025
2 Nov 2026$114$162$22724025
1 Nov 2026$114$162$22724025
31 Oct 2026$114$162$22723825
30 Oct 2026$114$162$22724025
29 Oct 2026$114$162$22724025
28 Oct 2026$114$162$22724025
27 Oct 2026$114$162$22724025
26 Oct 2026$114$162$22723825
25 Oct 2026$109$162$22724225
24 Oct 2026$109$162$22724225
23 Oct 2026$109$162$22724425
22 Oct 2026$109$162$22724425
21 Oct 2026$109$162$22724425
20 Oct 2026$109$162$22724425
19 Oct 2026$109$162$22724425

Questions answered for this network

One sentence each, computed from the regulator's published rates; the date on each is the day its figures last changed.

Every question in the library

Every household plan published on the SA Power Networks network (293)
Every small business plan published on the SA Power Networks network (171)

Postcodes on this network

333 postcodes list SA Power Networks as their distributor in retailers' offers. A sample:

Other networks: Ausgrid · Endeavour Energy · Essential Energy · Energex · Ergon Energy · CitiPower · Powercor · Jemena · United Energy · AusNet Services · Evoenergy · TasNetworks

Open pricing means Australians can be better informed, and save more.

Most comparison sites show a fraction of the market: the retailers that pay to be listed. OpenStream prices every plan every retailer publishes to the Australian Energy Regulator and Victorian Energy Compare, 9,624 published offers priced from 40 retailers in the regulator's listings, re-read nightly. Nothing is promoted, every plan links to the regulator's record, and the whole dataset is free to download.

  • 40
    retailers in the regulator's listings
  • 9,624
    published offers priced
  • 0
    promoted rows
  • 100%
    of prices cite their source