This chapter presents Finnish case studies of cost-efficient retrofitting. The first case study shows how multiobjective simulation can be utilized for selecting the most cost-efficient renovation measures. The second case study presents a real pilot building where cost-efficient renovation has been successfully implemented. The last case study presents the economic and environmental advantages of an ambitious nearly zero-energy level renovation compared to a traditional renovation.
Nearly zero-energy renovation; multiobjective optimization; cost-efficient renovation; pilot building