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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Going Solar in Secret Harbour
Secret Harbour, in the Perth region of WA, receives approximately 5.4 peak sun hours per day — well above the national average of 4.2 hours. With electricity rates of approximately 33c/kWh and Zone 1 Small-scale Technology Certificates (STCs) applying in this area, the financial case for solar in Secret Harbour is moderate.
At 46% solar adoption, Secret Harbour is already a solar leader in the region. This means experienced local installers are readily available and the grid operator has well-established processes for residential solar connections.
A 6.6kW solar system in Secret Harbour costs approximately $3344–$4484 after STC rebates. At 5.4h daily sun and 33c/kWh electricity, you can expect annual savings of approximately $82 — giving a payback period of 48.8–79.3 years, followed by 20+ years of near-free electricity.
The electricity network in Secret Harbour is managed by Western Power (metro Perth) or Horizon Power (regional). Western Power manages Perth's network. Export limits of 1.5–5kW apply on many residential connections — check before sizing your system. For residential systems above 5kW, a network connection application is typically required — your installer will handle this as part of the installation process.
Solar Rebates in Secret Harbour
Homeowners in Secret Harbour () access the following solar incentives in 2026:
Zone 1 FEDERAL STCs
Zone 1 STCs worth $3,200–$4,000 off a 6.6kW system. STCs are applied as a point-of-sale discount — your installer handles the paperwork.
STATE: WA
Distributed Energy Buyback Scheme (DEBS) provides feed-in credits for export
FEED-IN TARIFF
WA currently offers approximately 2.25c/kWh for excess solar exported to the grid. Self-consumption saves 33c/kWh — 14.7x more than exporting.
What Size Solar System for Secret Harbour?
The right system size depends on your electricity usage. A quick rule: divide your quarterly bill by $100 to get your ideal system size in kW. For Secret Harbour, common household sizes are:
With WA's feed-in tariff at 2.25c/kWh and electricity at 33c/kWh, the priority is maximising self-consumption rather than grid export. If your household is away during peak solar generation hours (10am–3pm), adding a battery to shift solar to evening use improves payback. See our solar battery guide for battery options and payback analysis.
Compare all system sizes — 5kW to 13kW →More Guides
How to Choose a Solar Installer in Secret Harbour
With dozens of solar installers operating in the Perth area, choosing the right one for Secret Harbour requires a few checks. Here's what to look for:
Our free solar score tool connects you with up to 3 CEC-accredited, vetted installers in Secret Harbour — saving you the time of calling around. Every installer in our network has verified reviews and local Perth experience.