WA households cannot choose their electricity retailer. Synergy supplies the South West Interconnected System and Horizon Power the regions, both on government-set tariffs. Solar, and shifting usage into daylight hours, are the levers available here.
How we worked this out
Western Australia runs its own market outside the NEM, with prices set by the state government rather than the AER.
Typical bills use average single-rate residential rates for 2026–27 (effective 1 July 2026), from the AER Default Market Offer and ESC Victorian Default Offer determinations, reviewed 20 July 2026. Cheapest plan figures are indicative, based on the lowest-cost plans on our panel excluding conditional discounts. Your bill depends on your retailer, tariff type, meter and usage pattern. This is a guide, not a quote.
About Karratha
Karratha is a mining and resources city in the Pilbara of approximately 17,000 people in WA. Read more about Karratha on Wikipedia.
Electricity in Karratha
Karratha (6714) is on the Horizon Power distribution network.
Our take on electricity in Karratha
Karratha is on the Horizon Power network in regional WA. Horizon Power is the sole retailer and network operator. Prices are regulated and subsidised under the WA Uniform Tariff Policy. The extreme heat (regularly exceeding 40 degrees in summer) means air conditioning is the largest electricity cost for most households.
For detailed pricing information, reference prices, and tips for your state, see our Compare Electricity Prices in WA guide.
Compare plans at your address
Enter your Karratha postcode to see what electricity options are available.
Compare plans nowInternet in Karratha
NBN technology available in Karratha includes FTTN and fixed wireless. Check your specific address at the NBN Co address checker to confirm which technology and speed tiers are available at your premises.
Multiple ISPs serve Karratha for addresses on the NBN network. Compare internet plans to find the best speed and price combination for your household.
