adds energy portal

The federal government is building a new neighborhood of its open government portal — this one focused specifically on the nation’s energy use. For now, contains a collection of apps, tools, and ideas about how to monitor, manage, and save energy. By the end of the year, officials plan to add detailed data about how much energy federal buildings and facilities use, with historical datasets going back to 1975. They’re hoping energy entrepreneurs use the data to create new, breakthrough technologies.