Kista is one of the largest workingarea in Sweden. It has a history of approximately 30 years. During this period the area has expand very much and has today an officespace of approximately 1 000 000 square meters. The area has had four periods of expansion, a slow expansion in the late 70’s...

Energy-efficiency has received much attention from policy makers and the issue of reducing energy consumption in buildings has faced a true challenge in balancing incitements, restrictions and cost-effectiveness for required changes. The literature shows that technological change and technology...