The energy consumption figures disclosed cover all energy consumed during United Internet’s business activities.
Total fossil energy consumption comprises the fuel consumed by the emergency generator sets at technical locations and by the Company’s own vehicle fleet. In addition, it comprises the use of natural gas and heating oil for heating.
The consumption of renewable energy can be broken down into the purchased electricity from renewable sources and the biodiesel used at technical locations.
Conventional energy sources were assumed for those office and technical locations for which United Internet did not have any detailed information from the electricity suppliers on the composition of the energy as at the time of reporting, and for the electricity consumed by the Company’s vehicle fleet. Consumption was broken down into consumption from nuclear power and from fossil sources using data from the IEA and the Arbeitsgemeinschaft Energiebilanzen e. V.
The purchased district heating is accounted for as energy from fossil sources.
The following table summarizes the Group’s energy consumption by energy sources.
Total fossil energy consumption (MWh)
42,934.67
Share of fossil sources in total energy consumption (%)
13.84
Consumption from nuclear sources (MWh)
1,540.91
Share of consumption from nuclear sources in total energy consumption (%)
0.50
Fuel consumption for renewable sources, including biomass (also comprising industrial and municipal waste of biologic origin, biogas, renewable hydrogen, etc. (MWh))
32.92
Consumption of purchased or acquired electricity, heat, steam, and cooling from renewable sources (MWh)
263,528.78
Consumption of self-generated non-fuel renewable energy (MWh)
2,115.90
Total renewable energy consumption (MWh)
265,677.60
Share of renewable sources in total energy consumption (%)
85.66
Total energy consumption (MWh)
310,153.18
Energy consumption and mix
2024
In the case of electricity and heating consumption at United Internet’s office locations, the primary data provided by the electricity and gas suppliers and the consumption data provided by the landlords was used as the basis. Since the heating consumption data for fiscal year 2024 will only be published after the Sustainability Report has been prepared, the figures from fiscal year 2023 were used. For locations for which no reliable consumption data were available, a specific consumption factor for United Internet was calculated using the documented data. This factor was then used together with the leased space and the number of employees at the location concerned to estimate consumption. A distinction was made here between pure office locations and locations with logistics or technical space.
Consolidation of the energy consumption figures for purely technical locations also drew on the primary data provided by business partners, electricity providers, and diesel suppliers, and on the data collected by the Company’s own energy management and other tracking systems. This was supplemented by cost- and energy-based estimates so as to be able to calculate the total energy consumption.
The consumption data for the Group’s own vehicle fleet is based on the number of refueling procedures determined by the vehicle leasing partners. A maximum value of 100 kWh per charge is assumed for average electric vehicles.
Photovoltaic systems are already being used for electricity generation in the data centers in Niederlauterbach, Lenexa, and Worcester. Metrics for calculating the energy generated are included in this year’s CCF calculation. Additional information on these photovoltaic systems can be taken from the sustainability report for the Business Applications Segment.
See the Reports section of IONOS’s website.
Energy consumption was originally measured in kilowatt hours (kWh) and liters (l) and was converted into MWh during consolidation.
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