Standby generators are lifelines for businesses and homes because they provide power during an outage. They automatically turn on when you lose access to the main power grid, ensuring you can power vital equipment and appliances.
Investing in a backup generator is a wise decision, and there are models for all of your power needs. In this guide, we’ll cover how standby generators work, their benefits, and available types.
A standby generator is permanently installed in homes or businesses and provides vital power during an outage. Most modern generators automatically activate within seconds of mains electricity loss, powering business equipment and home appliances.
Most run on petrol, diesel, natural gas, or propane, and you’ll find generators in a range of outputs. While some people invest in a large generator to power their entire property, others choose smaller sizes, which can support essential appliances or equipment.
Standby generators have various components, each playing a key role in their operation. Understanding these components is essential, as it ensures proper maintenance.
The engine is the most critical component of your generator, as it provides the energy required to produce electricity. Once the fuel burns, it activates the engine’s pistons and cylinders, providing electricity.
The size of your engine and its output define the generator’s capacity, with large engines able to power larger-scale operations.
As with cars, a generator’s alternator converts the engine’s mechanical energy into electrical energy. There are two components of alternators: the rotor and stator.
The stator is stationary, while the rotor spins inside, enabling an AC electricity flow. Alternators provide reliable power to any connected equipment.
Voltage regulators are vital to a standby generator, as they ensure the output remains stable. When the output suffers fluctuations, it can damage sensitive electronic equipment and appliances, but the voltage regulator consistently monitors the electrical output.
They also prevent unsafe drops or surges in electricity, which can save a lot of money on replacing and repairing equipment.
The fuel system is essentially your generator’s energy source and can’t operate without it. There are different fuel options, including diesel, natural gas, propane, and petrol, each offering benefits.
Most fuel systems also have tanks, filters, and pumps to ensure the fuel remains clean and contaminant-free.
Last, but definitely not least, is the control panel. It contains vital information regarding your generator’s operation, including engine performance, frequency, current, and voltage. You can also control the generator’s operation, including starting, stopping, and monitoring its output.
Modern generators also have advanced controls, including an automatic transfer switch and remote monitoring features, that enable you to review the generator’s operation from anywhere.
Standby generators provide a seamless transition from the main power grid to backup power during an outage. By doing this, they ensure no interruptions to your home or business. Here’s the typical process of how a generator works.
While older generators require manual setup and intervention, modern models can automatically detect power outages by monitoring utility power. When you lose access to the mains supply or there are fluctuations, the generator will activate.
Once your generator detects a power outage, the automatic switch activates and disconnects from grid power. It will then send a signal to the generator, telling it to start.
The engine will turn on when it receives a signal from the automatic transfer switch. As fuel begins to flow into the engine, the alternator will start to turn, allowing the generator to begin producing electricity for your appliances and equipment.
Once the generator reaches its required electrical load, it will supply electricity to your circuits. Large capacity generators will power your entire home or business, while smaller models can provide electricity to vital appliances and equipment.
When access to utility power returns, the ATS automatically detects a stable supply and will instruct the generator to shut down. It will then return to the mains supply, ensuring a seamless transition.
Even a minor power cut can be devastating for a home or business, but generators are long-term investments that give you peace of mind and can save money. Understanding the many benefits of generators can help you decide whether to invest in one.
Commercial offices need constant access to IT equipment, while retail stores need to ensure a safe and welcoming environment for customers. Industrial businesses rely on powerful equipment to complete daily tasks, and homes have fridges and freezers that require constant power.
When you lose access to your main power supply, it can result in significant financial damage. Whether that’s losing vital operational time or replacing food, the long-term savings a generator provides often offset your initial investment.
When you choose a generator with an automatic transfer switch, it will instantly activate and ensure a smooth transition from mains to backup power.
Instead of having to monitor your power supply and control the generator yourself, you can have peace of mind that you’ll never be without electricity for long. This is particularly beneficial if you’re away from the building.
It’s important to remember that generators don’t just provide power during an outage; they can also activate when your mains supply is unstable. Not only does this ensure your business or home remains operational, but it also protects sensitive equipment from damage.
Industrial and commercial businesses operate under strict health and safety laws, and generator installation ensures a secure environment.
Having a backup electrical system ensures long-term operational stability and productivity. Your generator can last for years if it’s professionally installed and regularly maintained.
So, even though they may require a significant initial investment, you’ll benefit from long-term usage and reliable standby power.
Modern standby generators come with a variety of fuel options, and the one you choose will directly impact their operation. There’s no right or wrong solution here, as it depends on your budget, fuel availability, and personal preferences.
When it comes to backup generators, diesel is the most popular fuel source. It’s highly efficient and usually the best option for powering large businesses and homes. Diesel also has a long shelf life and can power heavy loads.
Many diesel generators can also accommodate red diesel fuel, which is more affordable. However, diesel can be more expensive than petrol.
If you live in an area that doesn’t have access to natural gas, then propane can be beneficial. It’s a low-emission solution that burns cleanly and won’t degrade during long-term storage.
However, the main drawbacks of propane fuel are its initial cost and limited runtime. You’ll also need to refill the tank regularly, more often than with diesel.
Natural gas is becoming a popular solution for standby generators, as it’s environmentally friendly and doesn’t require storage. Instead, it flows through gas lines, which can be a convenient solution for businesses and homes.
However, not all areas have access to a natural gas supply, and you’ll need a connection. Also, any interruptions to the supply mean that your generator won’t work.
When properly cared for, a generator can supply backup power for over 15 years. As with all machines, regular maintenance is required to ensure it continues to operate efficiently and provides instant support during power failures.
While you can perform basic checks yourself, using a professional generator maintenance service prevents the need for expensive repairs and complete replacements.
When you purchase a generator, the manufacturer’s manual will recommend a maintenance schedule, and it’s essential to follow it. Common tasks include regularly changing the oil and oil filters to ensure safe operation, monitoring coolant levels, and cleaning the components.
You should also remove debris from the exterior regularly, as this can prevent it from damaging the components.
Read Our Complete Backup Generator Guide For More Information.
Generators might be in standby mode for months at a time, and conducting regular tests can ensure an uninterruptible power supply when you need it most. Many modern generator models are self-programmed to run an automatic test.
Weekly self-tests verify that the generator can start and manage its desired load, enabling you to identify any issues and arrange repairs.
We also recommend regular fuel testing as contaminated fuel can damage the generator and the equipment it powers.
Many agree that standby generators are an excellent investment, providing ongoing peace of mind for homes and businesses. With the right support, you can ensure your generator lasts for years, reducing operational downtime and protecting vital equipment.
If you want to purchase a backup generator, Solent Power is an authorised distributor of models from the UK’s most reputable manufacturers.
Please contact our generator sales team today for more information.
A standby generator is permanently installed and connects to a business or home’s electrical system. Unlike portable generators, they provide ongoing support and come in a range of sizes. Portable generators are transportable and can power sites without access to mains electricity.
For example, they’ll provide electricity for emergency services and equipment on construction sites. They’re usually smaller than standby models, but this also means they have a lower capacity and require more manual intervention.
View Our Standby vs Portable Generators Guide to determine which suits your needs.
If you don’t have the budget for a new generator, used generators can be beneficial. However, older models that haven’t received proper maintenance and repairs might be unable to supply power. If you want to explore second-hand generators, purchasing one from a reputable supplier is vital.
Our used generators undergo extensive testing to verify their safety and performance, giving you peace of mind that the generator will perform.
Generators come in various sizes, and the right option for you depends on the size of your home and business and which equipment you want to power.
For example, residential properties or offices may require a small generator to support essential equipment, but industrial businesses use machinery that requires a higher output.
You can determine your generator size requirements by calculating the wattage of each appliance and adding them together. We also recommend adding a buffer to ensure the generator can accommodate your growing needs.
Solent Power Ltd (Company Number 12622565) is a company registered in England and Wales. Our registered office is located at Station yard, Bowes Hill, Rowlands Castle PO9 6BP. VAT No. 363504018