Buildings account for roughly 40% of the total energy consumption in the EU and the building sector is still growing, which will result in increased energy consumption. For reaching EU targets according to the Paris Protocol, it is important to reduce the energy consumption as well as to improve energy efficiency of the built environment. Building automation could be a useful measure for achieving these goals since it is a relatively simple and cheap measure that reduces the energy consumption and operational costs and at the same time improves the thermal comfort. However, it is not always easy to make changes to the HVAC systems in existing buildings. This research project therefore concentrates on how building automation can contribute to energy efficient refurbishment of buildings. The focus of the project is on optimization of the building envelope in combination with building automation for monitoring and control of the indoor climate for different types of buildings.

This project is part of ENERSENSE and combines energy efficiency with sensor technology, two of the three focus points within this research area. It is an interdisciplinary project that aims to cover the gap between two fields in research: building envelope optimisation (civil engineering) and building automation control systems (control engineering).



The research project is focused on, but not limited to, the following objectives:

  • Mapping the current status and trends regarding refurbishment in Norway.
  • Analysing Norwegian and International standards for new buildings and for refurbishment.
  • Comparing and integrate the Norwegian building standards with the standard for building automation.
  • Formulating problems and opportunities for characteristic building types in Norway with regards to energy efficiency.
  • Identifying indoor climate parameters within the scope that can influence the energy efficiency of existing buildings, and that can be monitored and regulated.
  • Identifying energy parameters to evaluate the energy efficiency of buildings.
  • Defining energy efficient solutions for refurbishment or upgrading of existing buildings where building automation is taken into account.
  • Proposing a solution as to how building automation can be included in energy simulations.


  • Literature review will be used to increase the understanding of the existing building stock in Norway, the relevant building codes and other standards, and available simulation tools that can be used later in the project.
  • Case study reviews will be used for analysing relevant refurbishment approaches and solutions to achieving energy efficient refurbishment.
  • Commercially available simulation programs will be used to analyse case studies as well as to test different refurbishment approaches.



The ambition of this research project is to contribute to the development of an energy efficient building stock. The project aims to:

  • Provide an overview of the national and international building standards and insight in which energy requirements are necessary to fulfil the energy targets.
  • Provide insight in the current research regarding the building envelope and regarding building automation.
  • Provide an overview of energy and indoor parameters that influence the energy consumption of the building and how they can be used to define energy efficient buildings.
  • Provide increased knowledge on how building automation in combination with upgrading the building envelope can contribute to energy efficient refurbishment.
  • Provide an overview and comparison of solutions for improving the energy efficiency in existing buildings.
  • Provide an open access solution for measuring indoor comfort parameters.
  • Provide a solution for how building automation can be included in energy simulations.