Duquesne Light Holdings announced Tuesday it had acquired TEN Inc., a Pittsburgh-based energy company. Financial terms of the deal weren't announced. TEN has 35 employees and works on energy efficiency and sustainability for businesses, governments, universities and hospitals. Its clients include the University of Pittsburgh, Carnegie Museums of Pittsburgh and the state's Energy Savings Program. It will continue to be led by CEO Troy Geanopulos and President/COO Rob Campbell. "We recognize the...