Assessment of national potential for energy savings and greenhouse gas reduction by inverse analysis of building energy performance

The present study aims at estimating the potential for energy savings and GHG emission reduction from thermal rehabilitation of existing blocks of flats in Romania. A typical building is chosen and analysed by using the inverse auditing modelling of its energy performance. It is found that 38% of the space heat consumption could be saved by proper thermal rehabilitation measures. The entire building stock structure is then reviewed in order to assess the national potential from similar buildings. The energy savings are converted to GHG emission reduction at the energy production units, assessing thus the energy waste influence on the environment.