Backup & off-grid — NI
When the street goes dark, your house doesn't.
Battery backup that takes over in milliseconds — kettle still boils, heating still runs, Wi-Fi doesn't blink. No generator drone, no jerry cans, and it pays its way every ordinary day too.
NICEIC Approved Contractor
RECC registeredSwitchover ≤10 ms on Hinen systems
Silent — no generator, no fuel
Levels of backup
Pick how much of the house stays alive.
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Remote sites & outbuildings
Off-grid systems
Anywhere a mains connection is dear or impossible — solar, storage and backup designed to stand alone.
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The full house
Whole-home backup
Everything switches to battery in milliseconds. Most cuts pass without anyone noticing they happened.
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Fridge · router · lights
Essentials backup
A chosen set of circuits runs for as long as possible. The most storage-efficient option.
Battery vs generator
The generator finally has a better rival.
- Instant. Milliseconds, not the minute of darkness while a genny coughs into life.
- Silent. No drone over the garden fence at midnight.
- No fuel, no servicing. Nothing to store, nothing to forget, nothing to fail the one night you need it.
- Pays every day. A generator sits there costing money. A battery stores cheap and solar power all year — backup is the bonus. See battery storage.
Why it matters here
Storms don't check the forecast with you first.
Rural Northern Ireland knows what a winter storm does to overhead lines — some townlands wait days, not hours, for reconnection. Oil boilers need electricity to fire. Well pumps, freezers full of a season's beef, home offices, medical equipment: modern homes fail electrically. Backup design is about listing what genuinely can't stop, sizing honestly for it, and testing the switchover before we hand it over — not discovering the gaps mid-outage.
Sigenergy Home Energy Gateway
The box that islands your whole house.
Most battery setups back up a handful of chosen circuits. Add Sigenergy's Home Energy Gateway to a SigenStor and the whole house islands from the grid the moment it fails — every socket, every light, carried by the battery with the 0 ms load-side switchover the tower is rated for. When the grid returns, it reconnects just as invisibly.
- Whole-home backup — no picking which circuits matter at survey.
- Automatic islanding — disconnects from the failed grid, reconnects when it's back.
- Part of the Sigen ecosystem — one app, one platform, one installer. See the SigenStor.
- Designed at survey — sized against your supply and the loads you actually run.
Straight answers
Backup power, answered honestly.
Does a normal solar battery keep the power on in a cut?
Not by default — many setups shut down with the grid for safety. Backup needs the right hardware and wiring. The systems we fit for backup switch over in milliseconds, so the Wi-Fi doesn't even drop.
What stays on during a power cut?
Your choice. Whole-home backup keeps everything running within the battery's limits; essentials-only backup covers a chosen set of circuits — fridge, freezer, heating controls, lights, router — for longer. We design it around what matters to you.
Battery backup or a generator?
Batteries win for most homes: instant switchover, silent, no fuel to store, no servicing, and they earn money every normal day by storing cheap or solar power. A generator only ever costs.
Never sit in the dark again.
Tell us what has to stay on — we'll design the backup around it and give you a fixed price.