664 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), Portsea's 664 solar systems typically avoid around 4.98 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Portsea ranks 300th 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 (39 systems, 45% below the previous year), a natural slowdown after earlier periods of stronger uptake.
Collectively, Portsea's 664 solar systems avoid an estimated 7,952 tonnes of CO₂ per year — the equivalent of removing 3,787 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.