More than 700 MW of rooftop solar was added to Australia’s main grid in the past three months, helping drive wholesale electricity prices in the country’s National Electricity Market to their lowest June quarter average since 2020.
Australia’s cumulative rooftop solar capacity in its National Electricity Mark (NEM) increased from 25.7 GW as of the first quarter of 2026 to 26.4 GW by the end of the June quarter (Q2 2026), according to a report published by the Australian Energy Market Operator (AEMO). The total covers 3.9 million installations.
AEMO’s latest Quarterly Energy Dynamics report also shows household battery energy storage capacity across the NEM grew by almost 3.3 GWh or 41% during Q2 2026.
The report also notes 14 new grid-scale generation and storage projects totalling 3.9 GW of capacity reached full output during Q2 2026, double the previous quarterly record. This comprised 2.7 GW of battery capacity, 0.5 GW of solar-plus-battery capacity, 0.4 GW of solar capacity and 0.2 GW of wind capacity.
These supply changes lifted the renewable share of NEM generation to a new Q2 high of 42.1%, up from 37.1% in the same period last year.
