Australian locations with the most and least affordable energy bills - realestate.com.au

A real estate analysis has identified significant regional variation in Australian household energy affordability, with some locations paying substantially more than others for electricity and gas. The analysis ranked Australian postcodes by the ratio of energy bills to median household income, showing stark differences in cost burden across states and regions.

Where this fits

This cost pressure is a direct consequence of Australia's renewable transition. Solar and wind are cheap per megawatt-hour but expensive per kilowatt of firm capacity. A grid reliant on weather-dependent generation requires either massive battery storage (prohibitively costly and material-intensive) or gas backing. Grid operators are overbuild transmission to move dilute renewable output across long distances. Those infrastructure costs land on the poles-and-wires bill, which households pay. Regional variation reflects how transmission congestion and local solar saturation worsen the cost curve. This touches directly on the affordability pillar of energy security: an expensive grid is an unreliable one, because households and businesses defer consumption and investment.

What it means

Energy unaffordability is not incidental to the transition. It is structural. Regions with high solar penetration and weak transmission face the worst bills because the grid is inefficiently built to carry variable output. Firming that output with gas or batteries adds further cost layers that don't appear in the renewable megawatt-hour price. Nuclear, by contrast, delivers firm dispatchable power with minimal transmission overbuild and no fuel-cost volatility. The choice to exclude nuclear from Australia's energy law means accepting that some households and regions will bear unsustainable energy costs as the transition continues. That is a preparedness failure: energy poverty is a form of vulnerability.