593 solar installations registered with the Clean Energy Regulator · ranked top 50% in Victoria · data current as at 2026-06-15
Based on last week's Victoria grid mix (avg 980 gCO₂/kWh), Colac's 593 solar systems typically avoid around 4.45 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Colac ranks 316th 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 50 new systems installed in the past 12 months — a 25% increase on the previous year, making Colac one of Victoria's faster-growing solar postcodes.
Collectively, Colac's 593 solar systems avoid an estimated 7,102 tonnes of CO₂ per year — the equivalent of removing 3,382 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.