The VPP will expand Xcel’s existing VPP program, increasing the number of batteries that can be dispatched during an event ...

Investors interested in Oils-Energy stocks should always be looking to find the best-performing companies in the group. Is Ecopetrol (EC) one of those stocks right now? By taking a look at the stock's ...

Historic Denver is seeking to force preservation of a former power plant in central Denver as owner Xcel Energy’s one-month ...