1,092 solar installations registered with the Clean Energy Regulator · ranked top 50% in New South Wales · data current as at 2026-08-15
Based on last week's New South Wales grid mix (avg 790 gCO₂/kWh), Mount Colah's 1,092 solar systems typically avoid around 6.60 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Mount Colah ranks 293rd in New South Wales for solar installations — in the middle tier of 721 postcodes tracked by the Clean Energy Regulator across the state. Growth has been strong, with 135 new systems installed in the past 12 months — a 39% increase on the previous year, making Mount Colah one of New South Wales's faster-growing solar postcodes.
The combined impact is substantial: Mount Colah's solar community avoids an estimated 10,542 tonnes of CO₂ every year — equivalent to taking 5,020 cars off the road or powering around 2,108 average Australian homes with clean electricity. This is estimated using New South Wales's average grid emissions intensity of 790 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.