4,149 solar installations registered with the Clean Energy Regulator · ranked top 10% in South Australia · data current as at 2026-08-15
Based on last week's South Australia grid mix (avg 370 gCO₂/kWh), Port Willunga's 4,149 solar systems typically avoid around 11.74 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Port Willunga is one of South Australia's strongest solar communities, ranking 21st in the state — ahead of 94% of all South Australia postcodes tracked by the Clean Energy Regulator. Growth has been strong, with 241 new systems installed in the past 12 months — a 23% increase on the previous year, making Port Willunga one of South Australia's faster-growing solar postcodes.
The combined impact is substantial: Port Willunga's solar community avoids an estimated 18,760 tonnes of CO₂ every year — equivalent to taking 8,933 cars off the road or powering around 3,752 average Australian homes with clean electricity. This is estimated using South Australia's average grid emissions intensity of 370 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.