18,468 solar installations registered with the Clean Energy Regulator · ranked top 5% in Western Australia · data current as at 2026-05-15
Based on last week's Western Australia grid mix (avg 630 gCO₂/kWh), Wanneroo's 18,468 solar systems typically avoid around 89.01 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 2nd in the state — ahead of 99% of all Western Australia postcodes tracked by the Clean Energy Regulator. New installations eased in the past 12 months (908 systems, 8% below the previous year), a natural slowdown after earlier periods of stronger uptake.
The combined impact is substantial: Wanneroo's solar community avoids an estimated 142,180 tonnes of CO₂ every year — equivalent to taking 67,705 cars off the road or powering around 28,436 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.