Disclosure

Revenue model

BillWise is free for all WA households. We generate revenue through a single, flat referral fee of $30 inc GST per lead ($27.27 ex GST), paid by the installer when a homeowner requests a quote through our platform. This fee is paid by the installer, not by you. It is never added to your quote, and you pay exactly the same price you would by approaching the installer directly.

Critically, we're paid whether or not you go ahead with an installer, so our recommendations are never skewed by who pays us. The fee is a flat $30 for every installer in our network, so no one can pay to rank higher or be recommended more often.

Data sources

All calculations use publicly available, official data:

• Electricity tariffs: Synergy published rates (A1, Midday Saver, EV Add-On), updated when Synergy announces changes (most recent: 1 July 2026)
• Export rates: solar export payment rates (DEBS and REBS) as published by Synergy
• Solar data: Bureau of Meteorology solar irradiance data for Perth metro and WA regions
• Product data: Clean Energy Council (CEC) approved product lists for solar panels and batteries
• STC prices: Clean Energy Regulator STC clearing house spot prices
• Rebates: WA Government Energy Assistance Payment, Dependent Child Rebate, Air Conditioning Rebate rates
• WA Battery Scheme: Synergy published per-kWh rebate rates and eligibility criteria

We check for rate changes quarterly and update our data within 7 days of any announced change. If you notice outdated information, please let us know.

Who we connect you with

Quote requests made through BillWise go only to WattMate Certified installers. WattMate is run by WattMate Pty Ltd, the company that operates BillWise. Every installer on WattMate is in one of two states:

• WattMate Certified: granted manually by WattMate after a review, and reviewed regularly
• Public listing: a public record of the business. A listing is not a recommendation

WattMate is not affiliated with, and does not endorse, any listed business unless it is marked WattMate Certified. Where WattMate holds an installer's ABN, it may check it against the Australian Business Register. WattMate Certified installers are required to provide credential documents (electrical contractor licence, SAA accreditation, insurance) for our review, and we remind them before each one expires. We do not guarantee any installer's work. Before you sign, confirm the installer holds current SAA (Solar Accreditation Australia) accreditation for solar and battery work, or the relevant licence for other work (such as EV chargers, heat pumps, or hot-water systems), check reviews, request references, and compare multiple quotes. See how WattMate sources installers.

Independence

BillWise is an independent platform. We are not affiliated with Synergy, Western Power, the WA Government, the Clean Energy Council, or any solar/battery manufacturer. Our recommendations are based solely on your inputs and published data, not on commercial relationships.

Accuracy disclaimer

While we strive for accuracy, all savings estimates, payback calculations, and recommendations are indicative only. Actual results depend on your specific circumstances including:

• Roof orientation, angle, and shading
• Actual electricity usage patterns
• Installer pricing (which varies)
• Weather variability year to year
• Future tariff and rebate changes
• Equipment degradation over time

Always verify rebate eligibility, tariff details, and concession amounts with the relevant authority before making financial decisions. See our Terms of Service for full disclaimer.