Upgrade of energy statistics, 2022 and 2023
More than 90% of electricity produced in electricity, gas, steam and air conditioning supply
With an international project, SURS has developed methodologies for the preparation of disaggregated data on energy use in road and rail transport, disaggregated data on electricity production by sector and fuel, and data on electricity consumption in data centers.
Half of the energy in road traffic consumed by heavy goods vehicles
Within the framework of energy use in transport, a dissagregation of the energy used in rail and road transport by category was determined for 2022. In the observed year, the amount of electricity consumed in railway transport for passenger transport amounted to 56.78 GW, while the amount of electricity consumed in rail transport for the transport of goods amounted to 185.15 GWh. When it comes to energy usage in road transport, we distinguish between heavy goods vehicles (which consumed 147.94 TJ), cars and combined vehicles (which consumed 135.78 TJ), and collective transport (which consumed 12.00 TJ). The basis for the calculations was data on vehicle mileage. Within the segment of cars and combined vehicles, most of the energy was used for the transportation of passengers, namely 92.6%. The remaining 7.4% was energy consumption for the transport of goods.
Households also produced some electricity
In 2023, net electricity production was 15,130 GWh. Most of it was produced in electricity, gas, steam and air conditioning supply (90.6%), followed by households (2.8%) and manufacturing (2.4%).
The nuclear power plant and hydropower plants produced the most electricity (around 35% each), followed by production from lignite (16.1%), solar power plants (6.5%), natural gas (3.2%), sub-bituminous coal (2.3%), wood and wood waste (1.2%), and other renewable (0.7%) and non-renewable sources (0.1%).
The majority of electricity consumed for servers’ operation
Data centres are large electricity consumers, so monitoring their consumption is important for studying and monitoring the environmental impacts of digitalization. In 2023, the area of 41 considered data centres in Slovenia was 6,295 m2 and their total rated electrical power 7,554 kW. Their total electricity consumption was 36,833 MWh.
Smaller data centres with power size less than 100 kW dominated with 61%. 32% of data centres had power size greater than 100 kW and less than 1,000 kW, while only 7% had power of 1,000 kW or more. The majority of data centres (46%) were owned by business entities registered in information and communication activities (NACE Rev. 2 section J), 15% were owned by business entities registered in financial and insurance activities (NACE Rev. 2 section K), and 12% each in transportation and storage activities (NACE Rev. 2 section H) and education (NACE Rev. 2 section P). The remaining 15% were owned by business entities registered in wholesale and retail trade, repair of motor vehicles and motorcycles (NACE Rev. 2 section G), in public administration and defence, compulsory social security (NACE Rev. 2 section O) and in professional, scientific and technical activities (NACE Rev. 2 section M).
Half of electricity in data centres was consumed for servers’ operation, followed by consumption for cooling (28%), data storage (11%), network infrastructure (7%) and other end uses (4%).Net electricity production by NACE Rev. 2 divisions, Slovenia, 2023
1) The category “Unspecified” represents electricity production by producers for whom there are no data on their activity according to NACE Rev. 2. The category includes small private hydropower plants (174 GWh) and other solar power plants (35 GWh). |
In 2023 and 2024, SURS implemented a grant project in the field of energy statistics modernisation. The purpose of the project was the establishment and development of new content in the field of energy statistics, which are important for completing the energy balance, for monitoring progress in achieving goals regarding renewable energy sources and other policy measures in the field of energy and climate change.
In the project, data were prepared in the areas of energy use in road and rail transport, electricity production by sector and fuel, and electricity consumption in data centres.
Co-funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the granting authority can be held responsible for them.
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