1,388 solar installations registered with the Clean Energy Regulator · ranked top 25% in Western Australia · data current as at 2026-08-15
Based on last week's Western Australia grid mix (avg 630 gCO₂/kWh), Merriwa's 1,388 solar systems typically avoid around 6.69 tonnes of CO₂ every hour during peak generation.
Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly
Merriwa sits in the top third of Western Australia for solar uptake, ranking 94th in the state out of 388 postcodes in the Clean Energy Regulator dataset. Growth has been strong, with 162 new systems installed in the past 12 months — a 69% increase on the previous year, making Merriwa one of Western Australia's faster-growing solar postcodes.
The combined impact is substantial: Merriwa's solar community avoids an estimated 10,686 tonnes of CO₂ every year — equivalent to taking 5,089 cars off the road or powering around 2,137 average Australian homes with clean electricity. This is estimated using Western Australia's average grid emissions intensity of 630 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.