A good power backup can cost anywhere from $100 to over $500 but that is only a fraction of the cost of a good computer or monitor that you would have to replace without a backup battery.

You can call it whatever you’d like, but one thing is clear—saving a full $1,000 on home backup power is nothing to scoff at.

A demonstration project led by Caterpillar at a Wyoming site showed that large-format hydrogen fuel cells could be used to supply backup power to a data center. Caterpillar on Jan. 19 announced ...