Energy use in premises
As a part of the work of improving energy statistics in buildings, the Swedish Energy Agency is looking at how energy is used in different types of premises with a special focus on electricity use. In total we are looking at how energy is used in 1000 premises over a period of six years.
The purpose of the STIL2 project is to find out how energy use is distributed between the different areas of use, for example lighting, ventilation and computers. The project started with a survey of office premises in 2005. During 2006, schools and preschools were surveyed, in 2007 care centres, in 2008 sports centers and in 2009 different types of business premises were surveyed. In 2010 STIL2 focused on hotels, restaurants and public premises (ex. museums).
The results so far show that offices, schools and care centres are capable of saving approximately 2 TWh per year by using better lighting technology and ventilation systems. Savings equate to approximately 30 percent of the electricity use in these premises.
The results of the surveys, apart from being included in the national energy statistics, will also be used as a reference value for the energy declaration of buildings.
Knowledge as to how much electricity and other energy used in premises and what it is used for, is also required in order to be able to make forecasts of future electricity use and to evaluate the potential of energy efficiencies.