Erik Christiansen has been employed at Copenhagen University, in the Ministry of Interior (municipalities and health), in a Mayor’s Office (leader of the department), in a housing association (judicial leader) and at Copenhagen Business School (associated professor). For 27 years Erik Christiansen has been CEO of EBO Consult Ltd. EBO Consult has its core business in the energy sector – district heating, renewable energy (CHP, thermal solar energy, PV/PVT and windmills in and outside Denmark) and energy communities. The company has received numerous awards for good sustainable practices. The company has specialised in cooperative business, e.g., district heating cooperatives/energy communities and manages several of these. Erik Christiansen has been the co-former of NetVarme (NetHeat) in 2016 which is a network with members from several district heating coops and municipal district heating companies. Erik Christiansen is elected as one of 3 Executive Committee members.