Cheapest electricity plan in Cairns
As of 8 November 2026, the cheapest published electricity plan in Cairns for a household using 4,000 kWh a year is Ergon Energy's Tariff 12E at an estimated $123 a month, on the Ergon Energy network.
Cairns's 7 postcodes within 20 km of postcode 4870 are all on the Ergon Energy network, where 32 plans from 5 retailers are published and the median is $133 a month. Your postcode page names your network and the cheapest plans on it. Figures are OpenStream's estimates from the supply and usage rates each retailer publishes to the Australian Energy Regulator, at the stated annual usage, GST as published and conditional discounts excluded; they are not retailer quotes. Demand-priced, variable-priced and solar-only plans are left out because they have no single honest figure.
Cheapest first
Estimated monthly cost at the stated usage. Every plan links its page; the button hands off to the retailer.
- 1Ergon Energy Tariff 12EErgon Energy network$123/moGo to Ergon Energy
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Tap one to begin. Two more questions, your postcode and the bill, then every published plan on your network, cheapest first. Open the check
How to read this
Every figure is OpenStream's estimate, not a retailer quote: the supply and usage rates each retailer publishes to the Australian Energy Regulator (via Energy Made Easy), applied to the stated annual usage, GST as published, conditional discounts excluded. Prices vary by distribution network, not postcode, so the network page is the record; it links every plan to its regulator entry and keeps a nightly history. Demand-priced, variable-priced and solar-only plans are left out because they have no single honest figure. Errors are possible - check the cited sources. Full method: methodology. Machine-readable: this answer as JSON, MCP, llms.txt.
Related: Electricity prices for postcode 4870 · Cheapest on the Ergon Energy network · Cheapest electricity plan in Queensland · Cheapest small business electricity plan in Queensland · Is my bill too high? Check it against every published plan · All answers
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