Section
Rooftop solar and home batteries as household economics: install numbers, sizing and payback, worked from the regulator's own data rather than an installer's pitch.
Solar
In force from 1 October. A business array installed in 2029 is credited with five years of generation, a house two. Retailers buy the certificates; the government expects the bill impact to be minor relative to the potential benefits, without a figure. Our rough sizing inside.
Explainer
The ACCC's definition turns on one word: the customer relinquishes some control. Median bills run $762 to $1,093 lower. Only about 24 per cent of battery owners have joined, and the report names three reasons that is not irrational.
Explainer
IPART’s benchmark is a guide, not a rule, and your retailer can ignore it. Why it fell, why it sits so far below what you pay, and why an evening export is worth several times a midday one.
Batteries
468,388 batteries against 319,614 new solar systems from July 2025 to June 2026, and the average battery peaked at 36.8 kWh before the 1 May tiering change pulled it back. The regulator's own postcode data, summed fresh, with the reporting-lag caveat most headlines miss.