Hybrid inverter and battery storage mounted in a garage

Home and business battery storage

A battery moves your solar from the middle of the day to the evening, and keeps the lights on when the grid drops. We model whether one pays for you, then design it with Sigenergy, BYD, Sungrow or Tesla storage.

  • Free site assessment and quote
  • Engineer-designed systems
  • 10-year workmanship warranty

Battery storage across the North Island

What's included

  • Battery sizing modelled from your half-hourly usage
  • Add to an existing system or design in from the start
  • Backup power for outages where the battery and inverter support it
  • Sigenergy, BYD, Sungrow and Tesla options, selected per project
  • Installation by SEANZ-authorised installers and monitoring set-up

Store the day, use it at night

Solar produces most in the middle of the day. Most homes and many farms use most of their power in the morning and evening. A battery bridges that gap: it stores the excess at lunchtime and discharges it at dinner, so you buy less from the grid and export less at a low rate.

Whether that pays depends on your usage shape, your tariff and the battery size. We do not guess. We model it from your bill or half-hourly data and show you the savings with and without storage.

Rooftop solar panels feeding a home battery system

Add to existing solar or design it in

If you already have solar, we check your inverter and quote either an AC-coupled battery or a hybrid inverter swap. If you are starting from scratch, we design the system battery-ready so you can add storage on day one or in a few years.

For businesses and farms, storage can also cover peak demand charges and keep critical loads running, such as refrigeration, pumps or servers, through an outage.

Close-up of solar panels under a clear sky

Products and installation

We supply Sigenergy, BYD, Sungrow and Tesla battery systems, matched to Sungrow, Sigenergy or Enphase inverters. Installation and commissioning are by SEANZ-authorised, EWRB-registered electrical contractors, and you get monitoring, training and support after handover.

New Zealand home with rooftop solar

How the job runs

  1. Step 1 of 3

    Model the evening load

    We look at how much power you use after the sun goes down and how much solar you export, and size the battery to close that gap.

  2. Step 2 of 3

    Pick the system

    You see the savings with and without a battery, plus the backup capability of each option, then choose.

  3. Step 3 of 3

    Install and commission

    Our installers fit the battery and inverter, configure backup circuits where wanted, and set up the app so you can watch it work.

Battery storage: common questions

Is a battery worth it?

Sometimes. If you export a lot in the day and buy a lot in the evening, a battery captures that difference. We model it from your data and show you the payback before you decide.

Can I add a battery to my existing solar?

Usually, yes. Some systems take an AC-coupled battery directly; others need a hybrid inverter. We check what you have and quote the right path.

Which battery brands do you supply?

Sigenergy, BYD, Sungrow and Tesla, chosen to suit the inverter, the capacity you need and the budget.

Will the battery keep my power on in an outage?

With the right inverter and a backup configuration, yes, for the circuits you nominate. We set that up as part of the design if you want it.

What is the warranty on a battery?

Battery and inverter warranties are manufacturer-specific and commonly 10 years, alongside our 10-year workmanship warranty.

Step 1 of 7

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