The resolutions of the Energy Efficiency Act affect all data centers with a connected load of 300 kW or more.

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The connected load is the contractually agreed connected load of the grid operator or, if I share a transformer with someone else, the highest arranged distribution, the height of the input switch. If this is over 300 kilowatts, your data center is affected by the Energy Efficiency Act (EnEfG).

Every server room with a connected load of 300 kW or more is defined as a data center.

The decisive factor here is the extent to which two data centers are involved. If these centers are structurally and technically separate from each other, then they are two data centers that are not subject to reporting requirements, even if they have a cumulative connected load of 300 KW. 

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As EU law takes precedence over national laws, the Delegated Regulation (EED) generally takes precedence over the EnEfG. However, if national laws exceed the EED, they must be complied with. The EED is therefore only a basic requirement for all EU countries.

An energy monitoring identifies potentials for energy savings and economic considerations.

By utilizing waste heat, energy efficiency can be significantly improved.

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Have your data center certified with the "Blue Angel for Data Centers" eco-label. 

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Contact us for further measures for new or existing data centers.

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In the section "Energy efficiency of data centers", the draft stipulates that data centers must not exceed a certain value of energy consumption effectiveness or Power Usage Effectiveness (PUE).

This is staggered by year of data center commissioning: 

Commissioning before July 1, 2026: From July 1, 2027 PUE ≤1.5 | From July 1, 2030 PUE ≤1.3

Commissioning from July 1, 2026: PUE ≤1.2

The data center operator must at least plan to keep the waste heat capacity available so that it can be called upon by a heating network operator in the future. The resulting investments are addressed to the heating network operator as part of an offer from the data center operator. Waste heat is generally not remunerated. Minimum tax amounts are taken into account.

The proportion of reused energy (ERF - Energy Reuse Factor) must be at least 10% for commissioning
from  1.7. 2026 must be at least 10%,
15% from 1.7. 2027 and 
20% from 1.7.2028. 

From 01.01.2026, the establishment of an energy or environmental management system is mandatory

from 1 MW connected load for private data centers and
from 300 kW for the public sector

In the future, all important data from the data center must be entered into the Energieeffizienzregister für Rechenzentren (RZReg) by March 31 of each year.

The purpose of the Energy Efficiency Register is to document the effects of the strong growth in the data center sector on the energy market. The resulting waste heat potential will be reported and in the future will be linked to municipal heat planning to ensure that the heat transition is successful.

Data center operators are obliged to purchase 50% unsubsidized electricity from renewable energies since 2024 and 100% from 2027. The guarantees of origin (HKN) - i.e. the proof of the region from which the electricity is sourced - do not have to come from Germany or the EU.

This is not currently planned or envisaged.