3,847 solar installations registered with the Clean Energy Regulator · ranked top 15% in Western Australia · data current as at 2026-05-15
Based on last week's Western Australia grid mix (avg 630 gCO₂/kWh), Rockingham's 3,847 solar systems typically avoid around 18.54 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Rockingham sits in the top third of Western Australia for solar uptake, ranking 47th in the state out of 388 postcodes in the Clean Energy Regulator dataset. 180 new systems were added in the past 12 months, with growth of 7% on the previous year — typical of a maturing market where most interested households have already installed.
The combined impact is substantial: Rockingham's solar community avoids an estimated 29,617 tonnes of CO₂ every year — equivalent to taking 14,103 cars off the road or powering around 5,923 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.