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Victoria · Postcode 3757

Wallan solar & clean energy data

1,573 solar installations registered with the Clean Energy Regulator · ranked top 25% in Victoria · data current as at 2026-04-03

Wallan
Ranked top 25% for solar uptake in Victoria
#172
in Victoria
1,573
Total solar installs
83
Installed last 12 months
-10%
12-month growth
Monthly solar installations · past 12 months
12 months agoThis month
84
Home batteries
5.3%
Of solar homes have battery
Cheaper Home Batteries Program · from Jul 2025
18,838
tonnes CO₂/yr
Estimated annual carbon avoided by Wallan's 1,573 solar systems combined — equivalent to taking 8,970 cars off the road.
Community total, not per household. Estimated from avg 9kW system size × VIC grid emissions factor.
Compared to neighbouring postcodes
3757
1,573
#172 state
you
3756
2,810
#83 state
Wallan
3758
447
#370 state
Wallan
3759
229
#461 state
Kinglake
3755
44
#651 state
Mernda
3754
7,338
#14 state
Mernda
Victoria grid · community impact

Based on last week's Victoria grid mix (avg 980 gCO₂/kWh), Wallan's 1,573 solar systems typically avoid around 11.79 tonnes of CO₂ every hour during peak generation.

Grid intensity data: Open Electricity (openelectricity.org.au) · 7-day average · updates monthly

Wallan sits in the top third of Victoria for solar uptake, ranking 172nd in the state out of 713 postcodes in the Clean Energy Regulator dataset. New installations eased in the past 12 months (83 systems, 10% below the previous year), a natural slowdown after earlier periods of stronger uptake.

The combined impact is substantial: Wallan's solar community avoids an estimated 18,838 tonnes of CO₂ every year — equivalent to taking 8,970 cars off the road or powering around 3,768 average Australian homes with clean electricity. This is estimated using Victoria's average grid emissions intensity of 980 gCO₂/kWh, sourced from OpenElectricity, applied to an average system size of 9kW.

Monthly solar installations · Wallan
83 installs · May – Apr
6
16
7
4
5
7
9
5
10
8
3
3
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