Check out the Massachusetts Department of Transportation’s (MassDOT) first-ever Energy & Innovation Expo May 22 and 23 on the 2nd floor common area of the State Transportation Building, 10 Park Plaza, Boston. Billed by MassDOT as a great opportunity “to see and interact with the latest technologies on clean energy development, ongoing initiatives, and resources available in the Commonwealth,” the Expo runs from 10 a.m. to 2 p.m. each day.