En kostnadsanalys av energieffektiva flerbostadshus
In Sweden the real estate sector accounts for 33 % of energy consumption and just below 10 % of the emission of carbon dioxide. As a consequence of the external pressure from climate change it?s in everybody?s interest to reduce the energy consumption and thus reduce the emission of carbon dioxide. An additional incentive to reduce the energy consumption is the substantial increase of the energy price since the deregulation of the electricity market in 1996.In this study the techniques that exist to build multi-storey residential buildings with high energy performance will be investigated. Further the study intends to investigate the optimal energy performance from a real estate economic perspective.In order to investigate the optimal energy performance a model has been created with the parameters investment cost, rental revenues, operation and maintenance cost, discount rate and investment horizon.The result shows a relationship between a high investment cost and a high energy performance for newly constructed multi-storey residential buildings. Further the result3shows that the investment cost is the most important factor regarding the real estate economic profitability. The energy cost is the parameter in addition to the investment cost that affects the result to the greatest extent. The conclusion that can be drawn from the sensitivity analysis is that it?s rarely profitable to invest more money to obtain a higher energy performance. It?s worth noting that the object in this study with the lowest total cost had an energy performance below the national energy performance requirement for newly constructed multi-storey buildings.