Turn WA Sunshine into a Clear Savings Estimate
Get a fast, explainable estimate using Perth/WA defaults. Adjust assumptions like usage and self-consumption anytime.
Why Choose Us
A Clear, WA-First Solar Savings Estimate
Built around WA tariffs and realistic assumptions—so you can see a sensible savings range, not a single “perfect” number.
Precise WA Data
Defaults aligned to Perth/WA conditions and common tariffs, with transparent assumptions you can review.
Instant ROI Analysis
See an estimated yearly savings range and payback period based on your usage and system size.
No Sign-Up Needed
No login or personal details required. Your estimate is based on inputs you control and assumptions you can adjust.
How it Works
Enter your usage and system size to see a savings range and payback estimate.
Enter your details
Add your annual usage (kWh), system size, and home type. Use Perth/WA defaults or adjust advanced settings.
See a live estimate
We apply WA-relevant tariffs and sunlight assumptions to show an estimated savings and payback range.
Get full results
Review assumptions, compare scenarios (conservative ↔ optimistic), and see what most affects your outcome.
Frequently Asked Questions
Everything you need to know about switching to solar in WA.
We estimate a savings range based on your usage, system size, self-consumption, and WA tariff assumptions. Results vary with roof orientation, shading, and household usage patterns.
Most systems include an STC discount in the upfront price. Eligibility depends on system size and installation details. We show assumptions and link to sources for reference.
A battery can increase self-consumption, but payback depends on your usage pattern and battery cost. Our calculator focuses on solar-only first; battery estimates can be added later.
Sunlight, self-consumption, and export assumptions vary by household. Ranges are more honest and help you see best/typical/worst-case outcomes.
WA Solar Guides
Learn more about WA rebates, tariffs, and battery value before you decide on a system.
See Your Solar Savings Range in Minutes
It takes about 1–2 minutes. No sign-up. See a savings and payback range you can adjust.
Calculate Savings