Backup Power That Looks After Itself.

The Brief: Modest, Clear, And Refreshingly Specific

A couple in Banffshire wanted a straightforward answer to power cuts. Keep the lights on, keep the heating running. No large budget, and no complexity they hadn't asked for.

That's a genuinely useful brief, and it's more common than the industry likes to admit. Not everybody wants whole-house resilience with automatic load management and an app. Plenty of people want the essentials to keep working when the weather takes the power out, at a price that makes sense against how often that actually happens.

North Scotland gives that question a sharper edge. Power cuts here tend to arrive with the weather, at night, in winter — which is precisely when losing heating stops being an inconvenience and starts being a real problem.

Sizing To The Brief, Not To The Invoice

We supplied and installed a Hyundai 8kVA long-run diesel generator, sized to exactly what they asked for rather than oversold on capacity they didn't need.

It's worth being blunt about why that matters, because oversizing is the easiest thing in the world to sell. A bigger number sounds safer. The customer rarely has the information to push back. And the cost of getting it wrong doesn't show up until later.

The honest question isn't how big the house is. It's what genuinely needs to run while the mains is off. Lights, heating and its controls, fridges and freezers, some sockets — that's a modest load, and 8kVA covers it comfortably. The number only climbs if you insist on running electric showers or an electric hob at the same time, which nobody needs to do during a power cut.

The "long-run" part matters too. An enlarged fuel tank means the set runs for many hours without refuelling — which is the point when the cut is weather-related and might outlast a standard tank. Going out to refuel a generator at 3am in a Banffshire gale is exactly the situation you're trying to design out.

The Automatic Transfer Switch: The Part That Makes It Work

The generator was paired with an automatic transfer switch. The moment the power goes, the set starts itself and takes the load — no need to go outside and physically start it, whatever the weather or the time of night.

This is usually the difference between a generator that gets used and one that doesn't. A manual set demands that someone is home, awake, willing to go out in the dark and rain, and confident about the starting procedure. Every one of those conditions is a point of failure, and they all tend to fail at once — at 2am, in bad weather, which is when the power actually goes.

• Mains failure detected automatically, with no one needing to be present
• Generator starts and picks up the load on its own
• Works identically whether the house is occupied or empty
• Transfers back and shuts down when the mains returns

The Outcome

The couple have reliable backup power that looks after itself. Lights and heating stay on through a power cut, and they don't have to do anything to make that happen.

The part they hadn't fully anticipated is what it does while they're away. Their fridges and freezers keep running through a cut with nobody at home — which, for anyone who has come back from a fortnight away to a defrosted freezer and a ruined floor, is worth a great deal on its own.