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Written by Keith Harrison

Uninterruptible Power Supply (UPS) Vs. Backup Generators

Uninterruptible Power Supply (UPS) Vs. Backup Generators

Difference Between Uninterruptible Power Supply (UPS) and Backup Generators

They both sound like the answer to your power outage problems – but they are actually two very different systems that can either work independently or in-line with each other. We discuss the differences between the two in detail and the merits and disadvantages of each.


Uninterruptible Power Supply

A UPS is a system that will step in instantly when there is a power outage, ensuring nothing turns off or stops as soon as there is a loss of power. As you can imagine, hospitals, data centres and emergency services all have these in place.

A UPS isn’t a long-term fix to the power outage – generally, they run from a few minutes to an hour post outage (depending on type). This gives you time to get your generator or backup power supply running.





We recently wrote a blog that covers the advantages and disadvantages of a UPS in more detail.


Backup Generator

Backup generators are sat waiting for the blackout to happen and have to be booted up once everything is off. They don’t jump in and keep things running seamlessly like a UPS does, but backup generators do provide a longer lasting solution whilst the power supply is off.







Using Both a UPS and a Backup Generator

In an ideal world, you would want to invest in both a UPS and a backup generator as they are built to work together during a power outage. They both have a wide range of benefits and disadvantages, so the main question you need to ask is: “Can my business afford to lose any power during an outage, even if it’s just 30 seconds?”

If the answer to this is yes, then you may wish to use just a backup generator and manage without power until a trained individual is able to start the backup generator. We’ve written an article on the effect power outages can have on your business.
If the answer is no, then it’s essential for your business to invest in a UPS!


Uninterruptible Power Supply at Celab

For many of our customers, the advantages of uninterruptible power supply, or the combination of a UPS and a backup generator is an easy decision.. We have extensive experience designing and manufacturing custom uninterruptible power supplies across a variety of different sectors, including defence. We adhere to the highest standards through our missions and values, as well as ‘best in class’ manufacturing.
If you want more information or to talk about your requirements please call us on 01420 477 011 or email at