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939 solar installations registered with the Clean Energy Regulator · ranked top 50% in Victoria · data current as at 2026-04-03
Based on last week's Victoria grid mix (avg 980 gCO₂/kWh), Altona's 939 solar systems typically avoid around 7.04 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Altona ranks 255th 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 (68 systems, 38% below the previous year), a natural slowdown after earlier periods of stronger uptake.
The combined impact is substantial: Altona's solar community avoids an estimated 11,245 tonnes of CO₂ every year — equivalent to taking 5,355 cars off the road or powering around 2,249 average Australian homes with clean electricity. 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.