Electricity prices in Karratha for 2026-27
| Network area | Usage rate | Supply charge | At 4,000 kWh a year |
|---|---|---|---|
| Horizon Power | 33.26c | $1.19/day | $1,766 |
Western Australia sets one price for households across the state, so Karratha pays the same rate as Perth: Horizon Power's A2 tariff matches Synergy's Home Plan A1. Horizon Power runs the network and sells the power in regional and remote towns outside the South West grid.
Full state detail: Western Australia electricity rates.
Who sells electricity in Karratha
Horizon Power is the only retailer for homes in Karratha. The price is set by the WA Government, so there are no competing plans to compare. All electricity retailers.
Average electricity bill in Karratha
| Usage | kWh a year | Per quarter | Per year |
|---|---|---|---|
| Low usage | 2,500 | $317 | $1,267 |
| Medium usage | 4,000 | $441 | $1,766 |
| High usage | 6,500 | $649 | $2,597 |
In a hot climate like this, air conditioning drives most bills, so homes with high cooling loads should plan for the top of this range.
- The Karratha area (formerly Roebourne) is in climate zone 1, high humidity summers and warm winters.
- Postcode 6714 is in CER solar zone 1, the highest solar rating in Australia.
More on usage: average bills in Western Australia and why a bill can be high.
Solar panels in Karratha
| Rooftop solar systems installed | 1,133 |
|---|---|
| Total solar capacity | 12 MW |
| Average system size | 11.0 kW |
| Solar systems in the past 12 months | 44 |
| Home batteries since July 2025 | 28 |
| Heat pump water heaters | 1,544 |
Postcode 6714 is in CER solar zone 1, rated at 1.622 MWh per kW a year. A 6.6 kW system here is deemed to make about 10,705 kWh a year, or 29.3 kWh a day, and earns 53 STCs if installed in 2026. See the solar calculator to estimate savings.
Horizon Power classes Karratha as a low-cost town for its Distributed Energy Buyback Scheme, which pays 3c per kWh for exports between 9pm and 3pm and 10c between 3pm and 9pm in 2026-27, for systems of 5 kW or less.
Rebates: solar rebates and battery rebates.
Power outages in Karratha
Your network, not your retailer, fixes outages. Check Horizon Power's outage map first, then report it if your home is not listed. More: power outages in Western Australia and the Horizon Power network guide.
Rebates and bill help in Karratha
Karratha households can get Western Australia concessions and rebates, as well as federal programs. The main ones:
- Energy Assistance Payment: $377.14 a year
- Dependent Child Rebate: $396.56 for one child, plus $103.91 for each additional child
- Air Conditioning Rebate: $78.98 a year
Every program: Western Australia energy rebates, or use the rebate finder.
Questions about electricity in Karratha
On the Horizon Power A2 tariff for Horizon Power in 2026-27, power costs 33.26c per kWh plus $1.19 a day, including GST.
The AER does not publish consumption benchmarks for Western Australia. At 4,000 kWh a year, a common middle usage level, a home pays about $1,766 a year on the Horizon Power A2 tariff.
Horizon Power. It owns the poles and wires and handles outages. For faults call 13 23 51.
Postcode 6714 is in Clean Energy Regulator solar zone 1. A 6.6 kW system there is deemed to produce about 10,705 kWh a year, or 29.3 kWh a day on average.
Sources
Prices come from the regulator or the regulated retailer. Usage benchmarks, climate zones, solar zones and installation counts come from the AER, ABCB and Clean Energy Regulator. Last checked October 2026. Prices include GST unless we say otherwise.
- Synergy, Home Plan A1
- AER, residential energy consumption benchmarks (Frontier Economics), December 2020
- Australian Building Codes Board, climate zone maps by local government area
- Clean Energy Regulator, postcode zone ratings and zones for solar panel systems
- Clean Energy Regulator, small-scale installation postcode data (to August 2026)
- Horizon Power, buyback pricing schedule 1 July 2026
- Clean Energy Regulator, calculate small-scale technology certificate entitlements