Your power bill is hiding something. Open the case.
Work out what you could save
A few questions about your home, worked out on real Synergy rates
Calculate my savingsGot your bill handy? Analyse my bill instead
Not an AI estimate from a national average — your actual Synergy bill, recalculated line by line. Built for WA, not bolted on: the battery rebate, Synergy tariffs and solar export payments (DEBS: Synergy's payment for the solar power you send back to the grid.), kept current by a WA-only team. BillWise cracks yours open, free.
100% free · WA-specific rebates · no email required
No bill handy? Get your savings score
Three answers and BillWise scores what solar, a battery or going all-electric would do for your place, against real Synergy rates.
Free, instant, no email. Your score opens the full calculator with everything pre-filled.
Not ready for either? Start with just your postcode.
How BillWise works
You don't need to commit to anything. Just see the numbers.
Step 1: Tell us about your home
A few quick questions: your bill amount, household size, and what you are interested in. In about 2 minutes.
Step 2: See what actually saves you money
We crunch the numbers using real WA tariff rates and rebates. You get costs, payback periods, and a priority order.
Step 3: Get quotes (only if you want them)
Request quotes from Perth installers in the WattMate network. Nothing is shared with an installer until you ask — and you're never obliged to buy.
Where the money goes
One worked example, modelled on real WA tariffs, rebates and 2026 system pricing. This is what a finished analysis looks like.
$2,049
saved per year in this modelled scenario
Spend by time of day Heat = spend
The evening block is where the money goes: 3pm to 9pm carries most of this bill, exactly the window a battery covers.
Illustrative example, not a real customer. Your result comes from your own bill.
View more example scenariosEvery detail, inspected
Our tools check your bills against WA tariffs, rebates and install pricing, then show what to do first and what it saves.
Bill analysis
Upload your Synergy bill and we'll recalculate it line-by-line, catching errors and revealing hidden savings.
Rebate finder
We track every WA rebate: the federal solar rebate (SRES), solar export payments (DEBS), the Battery Scheme and council programs, so you never miss a dollar you're owed.
Savings planner
Model solar, battery and EV scenarios and see exactly how each upgrade affects your bills over 25 years.
Gas plan comparison
Compare WA gas suppliers, analyse your gas bill, and see whether going all-electric saves you money.
Keep going: analyse a bill · battery storage guide · example Perth scenarios · get free quotes
Electrify everything
Solar, batteries, EV chargers, heat pumps. Here is what each one does for your electricity bill, and where to start.
- Solar panelsBiggest bill cut
Perth averages 5.0 peak sun hours a day, among the best in the country. A rooftop system is usually the first upgrade that pays for itself.
- Battery storageUse solar after dark
Store the solar you make by day and use it through the evening peak, instead of buying it back from the grid.
- EV chargersDitch the petrol
Charge at home off your own solar and skip the petrol station. Daytime charging uses power you would otherwise export cheaply.
- Heat pumpsDrop the gas
Heat pump hot water uses a fraction of the energy of an electric or gas element. One of the easiest ways to drop the gas bill.
Featured guides
Why Perth households are ditching gas (and what it costs)
6 min readBest solar panels for Perth in 2026: what installers are actually recommending
8 min readThe electrify everything movement: what it means for Australian homes
5 min readWhole-home electrification: real costs and savings for WA households
9 min readAll articlesBill analysis by Perth suburb
Every area has different solar potential. Pick yours.