Q: I plan to install a backup generator for power outages. How do I determine what size I need? Would it make economic sense to just use one all the time? A: Smaller portable or large whole-house ...

Mike De Socio is a CNET contributor who writes about energy, personal finance, electric vehicles and climate change. He's also the author of the nonfiction book, "Morally Straight: How the Fight for ...

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