For years, Americans have been blanketing their homes with scads of solar panels. Now, they’re adding a growing number of batteries to store that electricity and protect against blackouts.

They call it range anxiety, the fear that an electric vehicle could run out of juice, say somewhere south of Yeehaw Junction on the way to Disney World with three cranky kids aboard. Such scenarios ...

An automaker says it has developed technology that speeds up electric vehicle battery charging to as little as 5 minutes at 1 ...