1,066 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 1,066 solar systems typically avoid around 6.61 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Mackay ranks 221st 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 (78 systems, 4% 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 10,552 tonnes of CO₂ every year — equivalent to taking 5,025 cars off the road or powering around 2,110 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.