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Proven building automation technologies (BAT) and building energy management systems (BEMS) have a crucial role to play in reducing the energy consumption and CO2 emissions in residential housing and service sector buildings. This study assesses the saving potentials of increased adoption and installation of these technologies in both the service and the residential European building stock. The potential is vast.
Compared to a reference scenario which assumes a continuation of current trends in the adoption and installation of BAT and BEMS/HEMS, the optimal scenario estimates the savings to reach 22% of all building energy consumption by 2028 and maintain that level thereafter. In a more realistic scenario, this potential ramps up progressively over the scenario period to reach 13% of reference case energy consumption by 2035. The study estimates annual peak savings for service buildings of between 40.3 and 49.7 Mtoe, which is 16.5 to 20.3% of the total EU service sector building energy consumption. For residential buildings, annual energy savings peak at 49.0 to 98.1 Mtoe, or 11.3 to 23.4% of the European residential building energy consumption.
Over the scenario period some €136 billion of extra investments in building automated technology and related services are needed to deliver these savings at an average of €6.2 billion per year. Large as these incremental investments are they are nine times less than the value of the resulting savings in energy bills which total €1,187 billion over the period at an average of €53.9 billion per year.