The final energy consumption of the sector services in 2017 amount 18 % of the final energy consumption in the 27 EU member countries, Norway, Switzerland, and United Kingdom. The consumption per energy carrier is splitted into following categories of applications: space heating, water heating, cooling, process cooling as well as process heating and other end uses like lighting and Information and communication technology (ICT). Furthermore, the consumption is splitted into commercial branches. The regional distribution to NUTS-3-level relies on a specific approach depending on the application and the branches in which the energy is consumed. On one hand the main distribution criteria for cooling applications, process heating and other appliances depend on the amount of employees /ECE-02 17/, /EUROSTAT-01 20/, /EPP-04 20/ per branch per NUTS-2-region. Furthermore, this consumption is distributed by population per NUTS-3-level /EC-01 18/. On the other, the approach for space heating and hot water is based on the heating structure and the employees per branch. Furthermore, a weighting of heating degree days has been considered for space heating like in the sector of private households.
The heating structure represents the share of each energy carrier used for heating within any NUTS-3-region. It is assumed that hot water is provided by the same energy source as space heating. The heating structure is based on a variety of national statistics, which are described in detail in the paper /FFE-103 19/ . The result of the combination of the data of employees and the heating structure is a employees weighted heating structure (EWHS). The EWHS represents the share among all NUTS-3-regions. The sum of all shares of NUTS-3-regions equals one per energy carrier.
Furthermore, the space heating depends on the temperature. However, the data has to be processed further, due to the inertia of the building mass. The degree-day numbers (DDN) are computed as described in VDI 3807 with small adjustments and the daily equivalence temperature (DAT) is used for the base for the temperature inertia of the building. Adding up DDN of one-year results in the yearly degree-day number (YDDN), which is then calculated for each NUTS-3-regions and NUTS-0-level. Further important parameters, besides the indoor temperature, for the YDDN computation involve the indoor temperature and heating threshold temperature. These parameters are set to 20°C and 15°C according for all countries, as there is a lack of country specific data. Hence, the EWHS is weighted by the YDDN.
Finally the absolute amount of the final energy consumption in 2017 per energy carrier, application and commercial branches is available per NUTS-3-region. In the map the relative values per square kilometer of all energy carriers, applications and branches are presented and the absolute values by using the mouse over.