Where the numbers come from
What the table is built from: the plan feed behind it, the formula each estimate uses, the household model that fills in a usage figure you haven't given, and the gaps.
Right now
| Network | Fuel | State | Plans | Retailers |
|---|---|---|---|---|
| Evoenergy | Electricity | ACT | 766 | 11 |
| Ausgrid | Electricity | NSW | 2,468 | 28 |
| Endeavour | Electricity | NSW | 2,356 | 29 |
| Essential Energy | Electricity | NSW | 2,504 | 28 |
| Jemena gas | Gas | NSW | 151 | 14 |
| Energex | Electricity | QLD | 2,189 | 27 |
| Ergon | Electricity | QLD | 161 | 5 |
| SA Power Networks | Electricity | SA | 1,058 | 27 |
| TasNetworks | Electricity | TAS | 147 | 4 |
| AGN | Gas | VIC | 612 | 17 |
| AusNet | Electricity | VIC | 1,175 | 27 |
| AusNet gas | Gas | VIC | 565 | 17 |
| Citipower | Electricity | VIC | 1,209 | 26 |
| Jemena | Electricity | VIC | 1,115 | 26 |
| Multinet | Gas | VIC | 396 | 17 |
| Powercor | Electricity | VIC | 1,217 | 27 |
| United Energy | Electricity | VIC | 1,145 | 27 |
Sources
Plan and rate data is kept current from the plan data every retailer is legally required to publish.
Estimate formula
Electricity: Est. cost = supply × 365 + usage priced per TOU block, weighted by an approximate residential hourly load profile over the hours/days each block's windows cover (40/30/30 peak/shoulder/off-peak fallback when block windows aren't available) − exports × FiT (battery shifts up to 60% of capacity/day to self-use at the usage rate). Excludes demand charges. Excludes solar / battery / EV export (tick above).
Gas: Est. cost = supply × 365 + usage split across MJ tiers. Excludes demand charges. Excludes solar / battery / EV export (tick above).
Household model
Search a suburb without typing a usage figure and the default household (~5,400 kWh · ~0 MJ / yr) fills the estimate in for you: two people, one air conditioner, electric hot water and cooking, no heating. Every input on the compare page can be adjusted, and the estimate recalculates immediately.
Known gaps
Western Australia and the Northern Territory run regulated markets with no retail competition, so they are not covered. Some regional and embedded networks may also be missing plans we don't index yet.
Suburb, postcode and boundary data
Suburb and postcode list: australianpostcodes by Matthew Proctor (github.com/matthewproctor/australianpostcodes).
Postcode boundaries on the map: Postal Areas 2021 (ASGS Edition 3), Australian Bureau of Statistics, used under CC BY 4.0 and simplified for the web. The ABS does not endorse this site.
For coverage caveats and how the estimate model works in more depth, see /docs.