Technical University of Cluj-Napoca by the Lighting Engineering Laboratory - LEL - is the main lighting independent consultant around Transylvania (the north-west side of Romania). Among o lot of private companies, the town halls and national regional authorities require LEL consultancy for designing new lighting solutions. The lighting refurbishment of university greatest lecture hall with an LED and dedicated control solution was a success and the starting point for a new strategy for a greener university. Some finalised or under survey energy efficiency lighting techniques are presented. The Technical University of Cluj-Napoca financed for the year 2014-2015 an internal energy efficiency project aiming to determine the present energy consumption for the university buildings. Starting from the present consumption and based on the tested energy efficiency implemented solutions, an eco-active building concept was developed - Living Building Lab. The main design proposals are presented. (C) 2015 The Authors. Published by Elsevier Ltd.