9,523 solar installations registered with the Clean Energy Regulator · ranked top 5% in Western Australia · data current as at 2026-08-15
Based on last week's Western Australia grid mix (avg 630 gCO₂/kWh), Rockingham's 9,523 solar systems typically avoid around 45.90 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Rockingham is one of Western Australia's strongest solar communities, ranking 14th in the state — ahead of 96% of all Western Australia postcodes tracked by the Clean Energy Regulator. Growth has been strong, with 419 new systems installed in the past 12 months — a 30% increase on the previous year, making Rockingham one of Western Australia's faster-growing solar postcodes.
The combined impact is substantial: Rockingham's solar community avoids an estimated 73,315 tonnes of CO₂ every year — equivalent to taking 34,912 cars off the road or powering around 14,663 average Australian homes with clean electricity. This is estimated using Western Australia's average grid emissions intensity of 630 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.