18,986 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), Wanneroo's 18,986 solar systems typically avoid around 91.50 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Wanneroo is one of Western Australia's strongest solar communities, ranking 3rd in the state — ahead of 99% of all Western Australia postcodes tracked by the Clean Energy Regulator. Growth has been strong, with 1,171 new systems installed in the past 12 months — a 30% increase on the previous year, making Wanneroo one of Western Australia's faster-growing solar postcodes.
The combined impact is substantial: Wanneroo's solar community avoids an estimated 146,168 tonnes of CO₂ every year — equivalent to taking 69,604 cars off the road or powering around 29,234 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.