303 solar installations registered with the Clean Energy Regulator · ranked top 50% in Western Australia · data current as at 2026-05-15
Based on last week's Western Australia grid mix (avg 630 gCO₂/kWh), Kalamunda's 303 solar systems typically avoid around 1.46 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Kalamunda ranks 171st in Western Australia for solar installations — in the middle tier of 388 postcodes tracked by the Clean Energy Regulator across the state. Growth has been strong, with 17 new systems installed in the past 12 months — a 70% increase on the previous year, making Kalamunda one of Western Australia's faster-growing solar postcodes.
Collectively, Kalamunda's 303 solar systems avoid an estimated 2,333 tonnes of CO₂ per year — the equivalent of removing 1,111 cars from the road. 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.