Home standby generators from companies like Champion, ... water heater, and air conditioning and heating systems—not to mention life-saving devices like medical equipment. ...

Large whole-house generators can power an entire average home than smaller ones. Here are the best of each size from CR's ratings.

The Nube SS30 Atmospheric Water Generator, made by Mexico-based Innovaqua Water Solutions, captures humidity in the air and converts the particles into drinkable water.