Generator Installation near you

The first decision is what the generator is expected to carry, because it sets everything else. A machine intended to keep a freezer, a boiler and some lighting alive is a different proposition from one expected to run an electric shower or a heat pump. An honest installer will work out the load first and tell you where the limit of the sensible answer lies, which often means a smaller machine and a shorter list of circuits than the householder had in mind.

Siting comes next and is mostly about three things that pull in opposite directions: keeping exhaust fumes away from the building, keeping noise away from neighbours, and keeping cable runs short. Outdoors, clear of windows, doors and air intakes, on firm ground, with proper weather protection and access for refuelling and servicing, is the direction of travel. Anything that pushes the machine towards a garage, a porch or an outbuilding for convenience should be resisted.

The connection itself is the part that must not be improvised. A fixed generator feeding house circuits needs a change-over arrangement so that the generator supply and the mains can never be live on the same wiring together, both to protect the installation and to protect anyone working on the network outside. Anything involving an existing installation, a transfer arrangement or a new circuit belongs to a qualified electrician, and the work finishes with testing, certification and, where it applies, notification.

LokalMatch is the introduction and nothing beyond it. You describe what you want the generator to keep running, whether you are thinking of a portable machine or a fixed installation, and your postcode, once, and electricians and generator specialists covering your area get in touch with you. The pros pay for the requests they receive. LokalMatch does not carry out any of the work, does not set prices and does not vet, rank or recommend the businesses that reply, so the questions about load, siting and certification stay with you.

Take the electrical notification first. In England, regulation 12(6A) of the Building Regulations 2010 requires notification to a building control body where the work consists of the installation of a new circuit, the replacement of a consumer unit, or any addition or alteration to existing circuits in a special location. A fixed generator supplying house circuits normally involves at least one of those, and GOV.UK confirms that you do not need to get approval yourself if you use someone registered with a competent person scheme. Scotland instead grants permission through a building warrant from the local authority as verifier under the Building (Scotland) Act 2003, with a completion certificate at the end, and Northern Ireland operates its own system again.

Then the network. Regulation 22 of the Electricity Safety, Quality and Continuity Regulations 2002 applies to any source of energy which may be connected in parallel with a distributor's network, and requires appropriate equipment to prevent danger or interference with that network, appropriate personnel and procedures, compliance with British Standard Requirements where the source is part of a low voltage consumer's installation, and specific requirements agreed with the distributor. The reason this matters for a standby set is simple: a change-over arrangement that can never connect the two supplies together is a different engineering proposition from one that can, and the honest installer will tell you which of the two they are building and what it obliges them to do.

Noise is the duty people forget until a neighbour complains. Under section 79 of the Environmental Protection Act 1990, noise emitted from premises so as to be prejudicial to health or a nuisance is a statutory nuisance, as are smoke emitted from premises and fumes or gases emitted from premises, on the same test. Local authorities have a duty to cause their area to be inspected from time to time to detect statutory nuisances. A generator that runs for hours in a small garden, close to a neighbouring bedroom window, is exactly the sort of thing that ends up being dealt with under those powers, so siting and acoustic treatment are worth more thought than most buyers give them.

This is the one section of this guide to read even if you skip the rest. HSE describes carbon monoxide as a colourless, odourless, tasteless, poisonous gas produced by incomplete burning of carbon-based fuels, including gas, oil, wood and coal, and notes that it is only when the fuel does not burn properly that excess carbon monoxide is produced. A petrol or diesel generator is a combustion engine, and it produces exhaust continuously while it runs.

That means a generator belongs outdoors, well away from windows, doors and air intakes, and never in a garage, a shed, a porch, a conservatory, a cellar or a lean-to, including with the door open. Nor should the exhaust be pointed towards an opening in the building. The symptoms HSE lists for carbon monoxide exposure are easy to mistake for something ordinary: headaches or dizziness, breathlessness, nausea, tiredness, pains in the chest or stomach, erratic behaviour, visual problems and loss of consciousness. If an alarm sounds or people in the building feel unwell while a generator is running, get everyone into fresh air and treat it as an emergency rather than a nuisance.

Fuel is where a generator quietly becomes a fire safety question. The Petroleum (Consolidation) Regulations 2014 govern how petrol may be kept in domestic and other relevant premises. Under Schedule 2, up to 30 litres may be kept in suitable portable containers, or in a single demountable fuel tank, with conditions including that the storage place is fire-separated from the rest of the building and any exit route where it is inside a building, and that no dispensing of petrol occurs there. Larger quantities, up to 275 litres, require notification to the petroleum enforcement authority and stricter conditions, including storage in a detached building, or attached to a building that is not domestic premises and fire-separated, with fire extinguishing and spillage containment apparatus available and no sources of ignition or heat liable to ignite petrol.

For most British households the case for a generator is weaker than the marketing suggests, and it is worth testing before spending anything. Mains supply here is generally dependable and most interruptions are measured in hours rather than days, so the realistic question is not how to power the whole house indefinitely but how to get through a short outage without losing the contents of the freezer or the ability to charge a phone.

A battery system, with or without solar, covers that pattern silently, needs no fuel, no ventilation and no one to go outside in the dark, and is permanently installed rather than dragged out once every few years. Its weakness is capacity: it will not carry heavy loads for long. A generator is the opposite, capable of running substantial loads for as long as fuel lasts, at the cost of noise, exhaust, refuelling, maintenance and a machine that must be started and managed by somebody.

The properties where a generator genuinely earns its keep are usually not ordinary suburban houses. They are rural homes on exposed lines, places with livestock, a private water supply, a business, or medical needs that will not wait, and buildings where an outage has consequences beyond inconvenience. If your property is in that category, say so clearly when you brief an installer, because it changes the design from a convenience to a piece of essential equipment.

With generators, the machine is genuinely a large share of the cost, but the installation around it is where quotations separate. The difference between a set you wheel out and a set that starts on its own is mostly work, not hardware.