Plug Power Inc (NASDAQ: PLUG) shares are trading higher Wednesday, up roughly 5% for December but still down 13% year-to-date, capping a volatile year as investors weighed its role in supplying clean ...

Fleet operators of plug-in hybrids aren't charging their vehicles, telematics and fleet management firm Geotab said in a study. PHEVs need regular charging to reap cost and fuel efficiency benefits.

Retailers such as Amazon, Iceland and Lidl have said they are working with the Government to update regulations ...