542 solar installations registered with the Clean Energy Regulator · ranked top 50% in Victoria · data current as at 2026-05-15
Based on last week's Victoria grid mix (avg 980 gCO₂/kWh), Castlemaine's 542 solar systems typically avoid around 4.06 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Castlemaine ranks 338th in Victoria for solar installations — in the middle tier of 713 postcodes tracked by the Clean Energy Regulator across the state. New installations eased in the past 12 months (13 systems, 43% below the previous year), a natural slowdown after earlier periods of stronger uptake.
Collectively, Castlemaine's 542 solar systems avoid an estimated 6,491 tonnes of CO₂ per year — the equivalent of removing 3,091 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.