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137 solar installations registered with the Clean Energy Regulator · ranked bottom 50% in Queensland · data current as at 2026-04-03
Based on last week's Queensland grid mix (avg 810 gCO₂/kWh), Mackay's 137 solar systems typically avoid around 0.85 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Mackay ranks 360th in Queensland out of 449 postcodes in the Clean Energy Regulator dataset, with 137 registered systems to date. Growth has been strong, with 11 new systems installed in the past 12 months — a 38% increase on the previous year, making Mackay one of Queensland's faster-growing solar postcodes.
Collectively, Mackay's 137 solar systems avoid an estimated 1,356 tonnes of CO₂ per year — the equivalent of removing 646 cars from the road. This is estimated using Queensland's average grid emissions intensity of 810 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.