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).

Each server room is defined as a data center, even if it is not located in an external building.

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: 

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

Operation from July 1, 2026: PUE ≤1.2

An obligation for mutual notification of load assumptions or customers (i.e. energy suppliers) has been decided. How the implementation is to take place, however, is not regulated. The obligation to use waste heat does not apply if the heat network operator does not respond to the request for 6 months or if no buyer can be found. In this case, the data center operator must prove that it can provide the necessary capacities, supply a suitable infrastructure, and that an investment plan and financial framework conditions have been regulated, or that the customer does not accept the offer despite it being in line with the market.

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

All important data of the data center must be entered into a data center database in the future. The purpose of this is to monitor, control, improve and document environmental issues relating to data centers. A distinction is made between public information and protected data. Here, the balancing act between data protection due to security-related concerns and a register to simplify the comparison of data centers is to be achieved. The federal government will be required to report annual energy consumption as early as 2024. From mid-2025, there will be mandatory reporting and the establishment of an energy or environmental management system. In March 2026, a mandatory annual transmission of information to the federal government will come into force.

Data center operators are obliged to purchase 50% unsubsidized electricity from renewable energies from 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.