Corporate IT departments are well aware of the numbers and costs. The local power utilities do their best to provide a constant regulated power supply to you, but failures for various reasons are inevitable. Acts of nature, and device failures are just two examples. High-tech equipment, including computers, rely on smooth regulated power. At best, you can lose any unsaved data you may have been working with.
Worse problems can result though.
An example might be an unrecoverable hard drive directory crash because data was not correctly written back onto it. A typical UPS uses gel-cell batteries to keep your system running if the main electrical power is cut off or reduced below an acceptable and safe level. The better models have regulating circuitry so reliable that the manufacturers typically provide a financial guarantee of protection of your connected equipment. That piece of mind, is the reason I decided to write this article. How many times it's kept the current steady during other power fluctuations I can't guess.