LAST UPDATED: MARCH 2026 · DATA: CLEAN ENERGY REGULATOR & STATE SOURCES
Secret Harbour solar fact
Secret Harbour is WA's most solar-dense coastal suburb — 46% adoption on a beachside estate means that on a clear summer day, 460kW of residential solar generation is visible from the air above a suburb of 1,000 homes
Estimated Monthly Output — 6.6kW
kWh/month · peak: Dec (634 kWh)
Solar in Secret Harbour — What You Need to Know
Secret Harbour is a master-planned coastal community south of Rockingham, developed from the early 2000s on the coastal limestone strip with marine lifestyle as its central value proposition. The suburb's entire housing stock is post-2000, meaning solar conduit is standard in most properties and the orientation planning of the estate ensures a high proportion of north-facing rooftops. City of Rockingham's supportive planning framework and the suburb's active community have driven adoption to levels that make Secret Harbour one of WA's most solar-visible communities. The coastal position means marine-grade components for all properties within 400m of the beach — which is a large proportion of the suburb — but buyers in this community treat marine-grade specification as standard rather than a premium. Battery attachment rate at 41% is among coastal WA's highest, driven by the community's interest in energy independence alongside the strong solar economics.
Solar Panel Cost in Secret Harbour 2026
| System | Cost after STCs | Annual savings | Feed-in |
|---|---|---|---|
| 5kW | $2842–$3344 | $1620+ | 2.25c |
| 6.6kW ★ | $3344–$4484 | $2160 | 2.25c |
| 10kW | $4347–$5829 | $3024+ | 2.25c |
FAQs — Solar in Secret Harbour
How much do solar panels cost in Secret Harbour?
A 6.6kW system in Secret Harbour 6173 costs $3344–$4484 after federal STC rebates in 2026.
Is solar worth it in Secret Harbour?
Secret Harbour earns a A- (Very Good) solar grade with a score of 85/100. 46% of homes here already have solar.
What size solar system for Secret Harbour?
6.6kW suits most Secret Harbour homes. Larger homes with pools or EVs should consider 10kW+. WA's feed-in tariff is 2.25c.
Solar in Nearby Suburbs
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