Renewables Drive 10.7% Power Price Cut in SE Queensland, Small Rise in SA

The Australian Energy Regulator's latest default market offer reflects cheaper wholesale power from wind, solar and batteries. Although the offer applies to fewer than one in ten households, its price signals tend to shape the broader market as retailers follow the benchmark. Network costs, however, continue to climb due to new transmission lines and extreme-weather repairs, offsetting some of the wholesale savings.

Transmission investment has risen as operators build lines to connect remote wind and solar farms to cities, adding to network charges that make up about 40% of a typical bill. Extreme weather in Queensland has also forced repairs that lift costs further. Despite higher network expenses, the wholesale savings from renewables are still large enough to push down the final price for many consumers.

In South East Queensland the regulator projects a 10.7% cut in retail prices for customers on the default offer, while New South Wales sees potential reductions as high as 7.7%. By contrast, a subset of South Australian customers will experience a 1.4% increase. The typical Australian household power bill remains around A$2,000 a year, meaning the Queensland cut could save roughly A$214 annually for those on the default plan.

These price movements show that renewable output is already lowering wholesale costs, but the benefits are uneven across states and customer groups. Retailers not bound by the default offer may adjust prices more slowly, and small businesses could see larger drops—up to 20.9% in NSW—because they consume more power during off-peak periods. The influence of the regulator's decision will likely ripple through the market as other retailers align their offers.

What to watch next: the rollout of smart meters and time-of-use tariffs, which could let more households shift consumption to periods when renewable generation is abundant and prices are lowest.