Off grid battery,
sized to the house.
An off-grid battery carries the house when the roof goes quiet. We design that storage for Australian properties: a hybrid system (solar plus a battery, with the grid as backup) or a stand-alone stack with the poles gone. The drawing comes first. Sigenergy, Deye, EcoFlow and Victron come after, and only when the loads call for them.
Designed in Lismore · installed by accredited localsA home battery for off-grid living
The house with the poles gone
Days the battery carries the house. Winter sun is assumed. The generator start rule is written down before any brand is named.
Grid still there, rarely touched
Evening peak and blackout cover, with the grid as the fallback. The design can keep a later cut of the connection open.
A roof already exporting
Storage still missing. The inverter on the wall, the switchboard, and the circuits that stay alive decide the battery.
Lithium usually, sodium when it fits
Lithium is the usual fit. Sodium-ion is named when cold mornings, a long empty season, or the chemistry itself decide it. Sealed lead-acid is on the lithium vs AGM page. The array and the rest of the stack are on off-grid systems.
Property, then design, then the battery
No brand is the house brand. We hold no warehouse, on purpose. An off grid battery is named after the loads, the winter, and the room it lives in. The platforms we actually install are on what we install. The shop overview sits on the homepage.
Hybrid storage or a stand-alone stack
| The job | What the design answers | Where it usually lands |
|---|---|---|
| New stand-alone house | Winter loads, days of cover, generator rules | Full off-grid, on what we install |
| Hybrid, grid still there | Evening peak, backup circuits, a later exit | Hybrid storage, grid as backup |
| Battery onto existing solar | Inverter already on the wall, circuits that stay alive | The platform that talks to that array |
| Cold site or empty season | Charging in frost, storage left at rest | Sodium-ion when the profile fits |
| Workshop or farm plant | Three-phase loads, plant that cannot wait | Commercial design, site visit in person |
The gear, after the drawing
These are the same platforms named on the install page. None of them is a default.
Sigenergy SigenStor
Inverter, battery management electronics and storage modules in one tower. Start near 8 kilowatt-hours of stored energy (kWh) and grow past 40 as the property grows.
Deye
Inverters with the surge rural properties actually use — bore pumps, compressors, the shed that doubles as a business. Single and three phase, grid-tied or fully stand-alone, paired with lithium storage. The inverter is the box that turns solar and battery power into household power.
EcoFlow OCEAN 2
Whole-home storage in single-phase and three-phase versions, with a fast switch to backup when the network drops.
Victron
Fifteen years of stand-alone builds still sit on that gear. It is still sold and still supported, including systems already on the wall.
Where an install actually happens
We install where accredited installers are on the ground: Northern Rivers, Tweed, Gold Coast, Mid North Coast, and the South Australian towns on the areas page. Outside that map you get a straight answer, and we check whether a preferred partner can take the site on.
NSW Lismore · Ballina · Byron · Kempsey · Coffs Harbour · Grafton QLD Tweed · Burleigh · Tamborine SA Adelaide Hills · Fleurieu · Murray Bridge
A custom design, not a catalogue pack
Tell us the property — existing solar or a bare roof, what stays on through a blackout, and whether the plan is hybrid or fully stand-alone. The design sizes the off grid battery against those loads.
Prefer the longer form? Get a custom design. Prefer to talk it through? Call or text 0483 927 257 — Lismore HQ, local voices.
Off grid battery questions
What is an off grid battery?
An off grid battery is the storage that carries a house when the solar array is quiet — evenings, a run of cloud, a winter week. On a stand-alone property it is the supply, with a generator for the long dark stretch. On a hybrid system (solar plus a battery, with the grid as backup) it carries the evening peak and the blackout, and the grid stays available.
Which off-grid battery brands do you install?
Sigenergy SigenStor, Deye, EcoFlow OCEAN 2 and Victron. No brand is the house brand, and we publish no ranking list. The property, the loads and the winter sun pick the platform. Lithium is the usual chemistry. Sodium-ion is named when the profile fits.
Can you add a home battery for off-grid use to solar already on the roof?
Often, yes. The design checks the inverter already on the wall, the roof, and the circuits that stay alive when the feeder drops. Sometimes the honest answer is a new inverter. That call is made on the drawing, before anyone orders a battery.
Does a battery on its own take a house off-grid?
Storage is one half of that path. A stand-alone design also sizes the array for your latitude and your winter, and writes the generator rule for the darkest stretch. A hybrid design can keep the option to cut the connection later. The drawing says which of those today's battery is.
How do I start an off grid battery design?
Send the form on this page, open the custom design path, or call 0483 927 257. Name, phone and suburb open it. A designer comes back with storage sized to the property.