BillWise is a free tool for Perth households. We analyse your Synergy bill, model what solar, batteries, or heat pumps would actually save you, and explain the numbers plainly.
Western Australia has some of the best solar conditions in the world, yet many households are still overpaying on electricity. The energy landscape is confusing — multiple tariff structures, changing rebate programs, and an overwhelming number of solar installers making hard-to-compare claims.
BillWise was built to cut through that complexity. We use real WA data — Synergy tariff rates, government rebate amounts, CEC-approved product databases, and Perth-specific solar irradiance — to give you savings estimates you can trust.
Thinking about solar, a battery, an EV charger, or ditching gas? BillWise shows you what actually makes financial sense for your household — not what an installer wants to sell you.
Published Synergy rates. Published rebate data. No inflated savings claims.
BillWise is free for households. We earn a small referral fee from installers when you request quotes — this never affects your price or our recommendations.
Built exclusively for Western Australia. We know Synergy tariffs, DEBS/REBS schemes, WA Battery Rebate, and Perth solar irradiance because that is all we do.
Gas-free homes have measurably better indoor air quality. Electrification is good for your wallet and your lungs.
“Most solar websites want to sell you a system. We just want to show you the maths.”
Upload your Synergy bill or enter your bill amount. We check which tariff actually suits your usage pattern.
Calculate ROI for solar panels, home batteries, EV chargers, heat pumps, and induction cooktops. All calculations use real WA data including STCs, DEBS export rates, and WA Battery Rebate.
Answer a few questions about your home. We produce a prioritised plan — what to do first, what it costs after rebates, and a modelled payback timeline. No fluff, just numbers.
Request free quotes from verified, insured WA installers. We verify credentials and collect customer reviews so you can choose with confidence.
It takes less than 2 minutes. No account required.