Rebates step down on 1 January 2027. Lock in today’s rate - design your system nowSolar STCs reduce by 20% on 1 January 2027 - how the deeming period worksThe federal battery rebate reduces by 16% on 1 January 2027 - what that means for a battery0% interest, up to $15,000 - NSW Government Home Energy Saver loans now available for eligible NSW householdsZero 4 Energy is a New Energy Tech (NETCC) Approved Seller - accredited under the industry’s leading consumer protection codeOur Solar Design Tool is now live - an engineered estimate for your home in minutesNew website - 63 articles and 78 straight answers to help you decide
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Battery Storage

Get battery storage to store your excess solar generation, have energy backup, utilise your off-peak rates or even go 100% off grid.

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Battery Storage

We provide battery upgrades for both residential and commercial applications.

Energy storage through batteries is ideal for properties with high bills and higher night usage. When connected to a large Solar PV system, batteries can store your excess generated electricity for use later. This often brings greater bill reductions than through basic feed in tariffs.

Contact us now to get an indicative savings evaluation.

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Common questions

What's the difference between usable and nominal battery capacity?

Nominal is the chemistry's theoretical total; usable is what you can actually cycle, because the battery management system fences off buffers at both ends to protect cell life. Usable is the only number that belongs in your arithmetic - it's what we quote and what you should compare across brands. Read the full article: How home batteries actually work →

How long can a battery run my home in a blackout?

It's arithmetic: capacity divided by load. A 13.5kWh battery running 1kW of essentials (fridge, lights, internet) lasts many hours and recharges from solar during the day; asked to run air conditioning, far less. We model your realistic outage scenario in the design rather than promising 'never lose power'. Read the full article: What actually happens in a blackout - backup explained →

How long does a battery last before it degrades?

All lithium batteries lose capacity gradually with cycling - that's physics, not defect. Warranties typically guarantee around 60-80% of original capacity after ten years, subject to throughput conditions. Heat is the main accelerant, which is why installation location matters and why we size with modest headroom. Read the full article: How home batteries actually work →

Go deeper

Your bills, your roof, your numbers

See your system, and your savings, in minutes

Our design tool runs the same engineering logic we do - your usage, your roof, current rebates - and shows you an indicative system with savings, payback and the working shown. No phone number required to see your numbers.

Prefer to talk? Request a callback or call 1300 978 428