1,964 solar installations registered with the Clean Energy Regulator · ranked top 50% in Queensland · data current as at 2026-05-15
Based on last week's Queensland grid mix (avg 810 gCO₂/kWh), Mackay's 1,964 solar systems typically avoid around 12.17 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Mackay ranks 173rd in Queensland for solar installations — in the middle tier of 449 postcodes tracked by the Clean Energy Regulator across the state. New installations eased in the past 12 months (136 systems, 20% below the previous year), a natural slowdown after earlier periods of stronger uptake.
The combined impact is substantial: Mackay's solar community avoids an estimated 19,440 tonnes of CO₂ every year — equivalent to taking 9,257 cars off the road or powering around 3,888 average Australian homes with clean electricity. 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.