Experts in Home Generators
As a specialist company, Generating Interest only supplies and installs equipment which is designed for long-term standby use in a residential environment. For these and safety reasons we only supply mainly gas-powered automatic standby generators.
When the generator is running, all you can hear is a slight hum which, if the generator is correctly installed, will not be audible inside the home.
Diesel generators are used where higher power levels and longer run times are required. Typical running costs are in the order of 20 pence per kWH of energy generated which is comparable with some domestic mains tariffs.
Run from ‘red’ diesel, or in some cases, from domestic heating oil, a correctly installed diesel generator is suitable for providing power for many years including powering ‘off grid’ homes with or without solar/wind supplement on a permanent basis.
We offer the HGI HRD range of diesel generators with power outputs starting at 7.3kW to 80kW – enough to power anything from a fair-sized house to a large estate including 3-phase power to workshops or outbuildings. These modern fuel-efficient machines are designed and built in the UK, are fully European stage 3A compliant and are acknowledged as the quietest in their class.
High power output
Very long working life
Can use ‘red’ diesel
Easy to configure for extended running
Can be (slightly) noisier than gas or petrol
Physically large and heavy
Care must be taken in location
External fuel tank installation must conform to regulations
Portable Petrol-Powered Generators
Due to the volatility and difficulty of safely storing petrol as well as its relatively high cost in terms of litres of fuel per kWh, we do not supply or install fixed petrol-powered generators, in line with standard practice in our industry.
Where petrol generators do have advantages is in their comparatively light weight and the initial cost is smaller than that of a gas or diesel powered generator.
We can supply and install a portable generator powered backup system or adapt a generator you already own for backup use (it will still function 100% as a portable for other uses once we have done this).
A portable generator must never be simply connected to the household supply in the event of a power cut unless an approved transfer switch has been installed by a professional, qualified electrician; otherwise there is a real danger to both the homeowner, their families and the utilities personnel working to restore the supply.
Low initial cost
High fuel cost
Cannot be permanently installed
Low operating time
Very difficult to store fuel externally to the generator
Gas generators are particularly suited for residential standby power. They are easy to install, clean and very easy to supply with fuel – either LPG (Liquid Propane Gas) or, if the property has mains, natural gas. This can provide almost unlimited run-time in the event of a major power failure. We offer the full range of Briggs & Stratton gas standby generators, the most fuel efficient on the market.
For LPG-powered systems we recommend 19kg or 47kg gas cylinders which we install with your system. A single 47kg cylinder will run a 12.5kW generator (suitable for most home backup needs) for up to 40 hours giving more than enough run time for most power cuts. Fuel cost makes to cost per kWh comparable to the National Grid and from 2016 onwards is expected to actually be lower.
Natural Gas or bulk LPG offer the lowest cost per kWh
Lightweight and easy to install
Care must be taken in the siting of LPG tanks
Must be serviced regularly to ensure safety
Automatic Switched Generators (ASGs)
An automatic transfer switch, known as an ATS’ continually monitors the incoming mains supply. Should this fail the ATS then remotely starts the generator, waits until its output is stabilised and then (again automatically) switches from the mains to the home generated supply. Once the mains power is restored, the ATS will switch back to it and shut the generator down, so – provided the generator has fuel, the system works without any intervention and in a completely fail-safe manner.
Depending on the generator used and the power required, ATS systems have many variables such as keeping the generator battery charged, allowing the engine to cool before shutting down when the power is restored, not starting the generator if there is simply a momentary drop (‘blip’) in power etc. We can advise the most suitable ATS for your needs following our site survey when we design your home generator installation.
Automatically restores power: you can be assured that when the power supply is cut your automatic generator will recognise this, and start up within seconds.
Reliability: as standard, ASGs run weekly self-tests to ensure they are running correctly.
Noise: ASGs offer sound-insulated ultra-quiet running, resulting in as little disturbance to you as possible.
We can set up priority circuits for your automatic standby generator which would delegate out available power to your most essential appliances first. Any power left over can be used to power less essential appliances.
Manually Switched Generators (MTSs)
As the name suggests, a manual transfer switch (MTS) is just that: when the mains power fails the householder has to start the generator and then switch from the mains to the home generated supply. When the power is restored the generator has to be shut down and the mains reselected from the switch. At its most basic a manual switch is essentially a box with an approved changeover switch capable of handling the full maximum current coming into the property (often around 100 amps).
As with ATS switches, there are variations of the basic unit to make life easier such as (manually operated) remote starting and a warning light/sounder to indicate the restoration of the mains supply.
Manual switches are most suited to small systems: those where power failure is very infrequent and for use with portable (petrol) generators.
Initial Cost: manually switched generators are cheaper than automatic standby generators.
Running Costs: a manually switched generator waits for you to determine if it is needed, rather than an automatic standby generator which may detect the power drop and start to power itself up.
Noise: manual generators offer sound insulated ultra-quiet running, resulting in as little disturbance to you as possible.
Our experienced professionals will be able to advise you on what type of manual generator you need. We have a range of manually-switched generators available which can power your whole house or prioritise your power usage toward certain appliances.