Most homes buy the wrong battery You're smarter.
Use your real half-hourly energy, not bill estimates, to tell exactly which battery pays off for your home
3 mins to connect · No home visits · Results immediately
+ 50 OTHERSYour personal answers, built around your lifestyle.
No guessing. A live workspace where you can choose the perfect battery for your home.
Your year, half-hour by half-hour
Twelve months of real interval data, visualised. See your morning peaks, your evening base load, your weekend swing, not a generic profile.
Every battery brand, side by side
Tesla Powerwall, Sungrow, BYD, Sigenergy, AlphaESS. Race them against your actual house, ranked by payback, 10-year net, and warranty risk.
Recover what your solar is losing
We pinpoint the export curtailment you are paying for and show, hour by hour, how each battery size claws it back.
Your tariff. Your savings.
Time-of-use, demand charges, controlled load, modelled against your actual plan, so the dollar figures are not industry averages.
Live quote checker
Paste any installer quote. We score the sizing, brand and price against the right answer for your home in seconds.
Independent. No kickbacks.
We do not sell batteries. We do not take referral fees. You pay once for access, the recommendations stay yours.
One payment. Twelve months of access. Every scenario, every brand, every tariff, yours to explore until the answer is obvious.
ONE-OFF · 12 MONTHS OF ACCESS
Four steps. Mostly us doing the work.
No installers in your kitchen. No spreadsheets. No guesswork. Connect once, then read the report.
Got a quote?Find out if it's a good one.
Drop in your quote. We compare it to current market prices, sizing for your home, and red-flag terms, in 30 seconds.
No sign-up · No credit card
People who'd rather see the real savings.
"I'd had three installers quote me wildly different battery sizes. SolvingZero used my actual data and showed why the cheapest quote was the right one. Saved me $4,200."
"The report is the document every battery buyer should have before they talk to anyone. Honestly couldn't believe it was $129."
"We were going to install a Powerwall. The simulation showed a Sungrow would save us more for our usage pattern. Different brand, same brand value."
One price. One answer. No sales.
We don't sell batteries, and installers don't pay us. We work for you.
Real answers and real savings.
- 12 months of half-hourly data analysed
- Every major battery brand simulated
- Solar export + tariff optimisation
- ROI, payback & 10-yr cashflow
- Recommended installers in your postcode
- Quote vs. recommendation check
Multi-property or commercial loads.
- Everything in Homeowner
- Up to 5 properties / NMIs
- Demand-charge & TOU optimisation
- Predicted solar where data is short
- Dedicated analyst review
- Priority support
Australian-owned · GST inclusive
Things people ask.
No. We connect via CDR (Consumer Data Right), the bank-grade open-data framework. Your electricity provider hands us 12 months of interval data directly, no PDFs, no spreadsheets.
Battery analysis without solar still tells you whether time-of-use shifting alone pays off, and we can predict the solar performance for your roof if you're adding both together.
Paste it in. We compare it against the right size for your home, current market pricing, and red-flag terms. You'll know if it's a good deal in 30 seconds.
No. We don't sell batteries and we don't take commissions or kickbacks from installers. You pay us once for the analysis, and that's our only revenue.
We use your half-hourly interval data, your tariff, your roof orientation (if solar), and a year of typical weather. Results are typically within 5-8% of the first year actual savings.
Connecting your data takes about 3 minutes. The report generates in under an hour. You'll get an email when it's ready.
Buy the right battery.Once.
$129. One-off. We do the maths. You get the right battery, sized for your home, with the right installer.
