471 solar installations registered with the Clean Energy Regulator · ranked bottom 50% in Victoria · data current as at 2026-06-15
Based on last week's Victoria grid mix (avg 980 gCO₂/kWh), Colac's 471 solar systems typically avoid around 3.53 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Colac ranks 365th in Victoria for solar installations — in the middle tier of 713 postcodes tracked by the Clean Energy Regulator across the state. Growth has been strong, with 26 new systems installed in the past 12 months — a 44% increase on the previous year, making Colac one of Victoria's faster-growing solar postcodes.
Collectively, Colac's 471 solar systems avoid an estimated 5,641 tonnes of CO₂ per year — the equivalent of removing 2,686 cars from the road. This is estimated using Victoria's average grid emissions intensity of 980 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.