Uninterruptible power supply

Energy Star logo

Buy ENERGY STAR® to save you money!

In the event of a power failure, Uninterruptible Power Supplies (UPS) provide emergency instantaneous power to critical devices - computers, data centers, and telecommunications equipment - through energy that is typically stored in a battery. An ENERGY STAR certified UPS uses 30-55% less energy, on average, than a standard model. For example, an ENERGY STAR certified, 1,000-kVA (kilovolt-ampere) UPS used in a large data centre could save $18,000 annually. Saving energy saves money and reduces your carbon footprint.

Key features

  • Can offer multi-mode operation, whereby a more efficient VFD mode is used unless power conditions warrant that a more highly protective VFI mode is needed.
  • Modular UPS, which use changeable small modules (10 to 50 kVA) to adjust for growth as needed, reduce maintenance and increase efficiency.
  • More efficient at higher capacity.
Uninterruptible power supply

Start your research using the ENERGY STAR Product Finder tool to find and compare certified uninterruptible power supplies. (NOTE: you will be redirected to the US ENERGY STAR website.)

Helpful tips

  • Know what you need. Make an assessment of the equipment you have, what needs to be protected at which current, the features you require, and the length of “uptime” needed in the event of a power outage.
  • Play it safe. Once you figure out the amount of power your equipment needs, consider selecting the next higher UPS size to increase backup time and allow for growth.
  • Protect your vitals. Make sure software is included to shut down and back up computers, and make sure it includes surge protectors on input and communication lines.
  • Keep it cool. Consider an air conditioned location to help your battery lifespans, which require cooler climes.
  • Keep your batteries fresh. Make sure the UPS performs automatic battery tests to warn when the batteries should be replaced.

The ENERGY STAR Promise

All ENERGY STAR certified products are tested to meet strict efficiency specifications and are certified by an independent third party. They perform the same as or better than standard products without compromising performance in any way.


The ENERGY STAR name and symbol are administered and promoted in Canada by Natural Resources Canada and are registered in Canada by the United States Environmental Protection Agency.