Sales are excellent at the Power Plant in Baltimore. Baltimore developer Cordish Co. http://www.cordish.com/sub.cfm?section=newdev has filled the once-vacant power plant with tourist-friendly stores. For 2009, it is estimated ESPN Zone www.espnzone.com will gross $11 million,  Potbelly’s www.potbellys.com  $1.5 million, a mind blowing $2.4 million for Chipotle www.chipotle.com, and a solid $3.5 million for Houlihan’s restaurant www.houlihans.com.