Examensarbetet är gjort för NCC Construction AB i Karlstad, all indata är baserad på NCCs tidigare projekt i Värmland. De flesta byggentreprenörer hyr sina etableringsbodar med vetskapen om att det kostar mer än att investera i bodar, men utan studier på att det är lönsammare att köpa bodarna. Studien är gjord på Cramos energieffektiva bodar.  Energiförbrukningen för produktion av en byggnad uppgår till 15 % av byggnadens livscykel, vilket leder till stora kostnader. En stor del av energin i produktionsskedet går till etableringsbodarna, undersökningar har gjorts på bodar för att få fram en energieffektiv bod och därmed har utgifterna på etableringarna minskat. Det finns ytterligare ett sätt att spara pengar på gällande etableringen och det är att äga sina etableringsbodar. Syftet är att visa vad som är mest lönsamt, att hyra eller köpa etableringsbodar. Med hänsyn till montering, demontering, lagring och underhåll har en kalkyl ställts upp som visar ingående kostnader och förutsättningar. Har man en beläggningsgrad på bodarna över 50 % är det mer lönsamt för NCC Construction att köpa sina etableringsbodar än att hyra dem. Vad som gör den största skillnaden är antalet förflyttningar på bodarna. Priset per byggdag kan halveras om man har en hög beläggningsgrad. Mellan 50 % - 90 % av hyrpriset kostar det att äga sina egna bodar per byggdag, beräknat på beläggningsdagar. / The work is done for NCC Construction AB in Karlstad and all input is based on NCC's previous projects in Värmland. Most entrepreneurs rent their establishment sheds with the knowledge that it costs more than investing in sheds, but without studies that it is more profitable to buy the sheds. This study is based on energy efficient sheds from Cramo. The energy consumption for the production of a building is 15% of the building's life cycle, which leads to high costs. A large part of the energy in the production stage goes to the establishment sheds, studies has been made on sheds to produce energy efficient shed and therefore, expenditure on establishments has decreased. There is another way to save money regarding the establishment, and that is to own their own establishment sheds. The purpose is to show what is most profitable, renting or buying establishment sheds. In view of the assembly, disassembly, storage and maintenance a calculation was set up that shows input costs and conditions. If you have utilization on the sheds over 50%, it is more profitable for NCC Construction to buy their establishment sheds than renting them. What makes the biggest difference is the number of movements of the sheds. The price per build day can be halved if you have a high occupancy rate. Between 50% - 90% of the rental price will it cost to own their own sheds, based on occupancy days.

The pace of Sweden's construction is at a level that has not been relevant since the 1970s. The high pace of construction together with an increased environmental awareness is a major challenge. The Swedish construction and real estate sector accounts for about 40% of the total energy use used for electricity and heating. In Sweden, there are between 50,000–60,000 construction site facilities and the majority have poor energy performance. The major players for the rental of construction site facilities in Sweden have a wide selection and offer energy-efficient solutions but also alternatives with poorer energy performance. According to earlier studies of energy consumption for a building during its life cycle, it has been reported that construction production accounts for 14% and operation for 85% of the total energy consumption. Recent studies have shown that a larger percentage of energy use is consumed in the production- and demolition stages. The new energy-efficient houses have significantly lower energy use in the user phase, the operation cost is lower than for older buildings. This in turn means that energy use during production can vary between 12-34%. The purpose and goal of the work are to investigate different actions and solutions that would mean a more energy-efficient and environmentally friendly establishment of construction site facilities. The work also addresses information with conditions regarding energy-efficient housing establishments. Based on the results that are worked out, a final proposal will be presented to presenters on the type of construction site facilities that Consto should aim to use to achieve ecological and economic sustainability. Methods that have been applied in the work were a case study of Kvarteret Fören in Karlstad, cost of living analysis (LCC), climate calculation, and literature study. Based on the study that has been carried out, the calculations from the reference object Kvarteret Fören have shown that there are cost incentives for the use of energy-efficient construction site facilities. Consto should aim to use Miljö A or construction site facilities with poorer energy performance and extra insulation in all projects to achieve financial sustainability. When using Miljö A there is potential to reduce carbon dioxide emissions by about 40%. With solar cells, there is the opportunity to make booth establishments completely self-sufficient. As a result, it would lead to a reduced operating cost and a lower climate impact. But in the current situation, there are some obstacles for companies to take this step. Finally, it can be said that ecologically and economically sustainable solutions can be combined. Investments in construction site facilities can provide short - or long-term profits