 SOLON, Ohio--BUSINESS WIRE-- EDFGroup--Energy Focus, Inc. NASDAQ:EFOI, a leader in sustainable and human-centric lighting HCL LED and control technologies, is officially approved as a Lighting Solution Technology vendor for Dalkia, a subsidiary of EDF Group. The full range of Energy Focus LED lighting and control products will now be offered for Dalkias building energy retrofit projects. Dalkia is a 5 billion, global energy services company that provides advanced and comprehensive energy effici 