The Western Australian Government regulates Synergy’s and Horizon Power's electricity prices with the following electricity by-laws:
- Energy Operators (Electricity Generation and Retail Corporation) (Charges) By-laws 2006
- Energy Operators (Electricity Regional Power Corporation) (Charges) By-laws 2006
Horizon Power and Synergy must make the regulated price available to their small use customers and some larger customers.
These by-laws explain possible fees and charges when electricity is supplied to customers. The Western Australian Government considers changes to electricity tariffs, fees, and charges annually as part of the State Budget process.
Read On-selling of electricity and gas page pricing requirements in residential electricity on-selling situations (e.g., apartment buildings, retirement villages, or residential parks). Alternative Electricity Services page will tell you about proposed regulations for embedded networks.
Uniform Tariff Policy
Show moreThe Uniform Tariff Policy means that small use Synergy and Horizon Power customers are all charged the same rate. This includes customers in remote regions, where the costs to supply electricity are higher.
The extra costs of supplying electricity to these areas are partially funded by the Tariff Equalisation Contribution through electricity network charges in the South West Interconnected System (SWIS).
New to Western Australia
Show moreThe Economic Regulation Authority has a guide on how energy is supplied to your residence.
Residential pricing
Show moreAll prices below are current as of 1 July 2025.
| Tariff | Charges | 1 July 2024 | Current 1 July 2025 |
|---|---|---|---|
| A1 & A2 | Supply charge - per day | $1.1322 | $1.1605 |
| Supply charge for additional homes - cents per day | 45.0158 | 46.1412 | |
| Electricity charge - cents per unit | 31.5823 | 32.3719 |
| Tariff | Charges | 1 July 2024 | Current 1 July 2025 |
|---|---|---|---|
| B1 | Supply charge - cents per day | 23.8547 | 24.4511 |
| Supply charge for additional homes - cents per day | 23.8547 | 24.4511 | |
| Electricity charge - cents per unit | 13.1783 | 13.5078 |
| Tariff | Charges | 1 July 2024 | Current 1 July 2025 |
|---|---|---|---|
| K1 & K2 | Supply charge - per day | $1.9979 | $2.0478 |
| Electricity charge - cents per unit | |||
| First 20 units per day | 32.9933 | 33.8181 | |
| Between 20-1650 units per day | 31.0918 | 31.8691 | |
| More than 1650 units per day | 35.0549 | 35.9313 | |
| Tariff | Charges | 1 July 2024 | Current 1 July 2025 |
|---|---|---|---|
| C1 & C2 | Supply charge - per day | $1.0927 | $1.1200 |
| Electricity charge - cents per unit | |||
| First 20 units per day | 25.5261 | 26.1643 | |
| Between 20-1650 units per day | 27.2347 | 27.9156 | |
| More than 1650 units per day | 25.9779 | 26.6273 | |
| Tariff | Charges | 1 July 2024 | Current 1 July 2025 |
|---|---|---|---|
| D1 & D2 | Supply charge - per day | $1.0776 | $1.1045 |
| Supply charge for additional homes - cents per day | 39.9536 | 40.9524 | |
| Electricity charge - cents per unit | 27.3798 | 28.0643 |
All rates provided are subject to rounding at the fourth decimal place.
Please note: One electrical unit represents 1 kilowatt-hour.
Please contact Synergy or Horizon Power for the exact rate that applies.
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