138 solar installations registered with the Clean Energy Regulator · ranked bottom 50% in Queensland · data current as at 2026-05-15
Based on last week's Queensland grid mix (avg 810 gCO₂/kWh), Mackay's 138 solar systems typically avoid around 0.86 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 138 registered systems to date. 10 new systems were added in the past 12 months, with growth of 0% on the previous year — typical of a maturing market where most interested households have already installed.
Collectively, Mackay's 138 solar systems avoid an estimated 1,366 tonnes of CO₂ per year — the equivalent of removing 650 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.