Germany eases data center heat reuse rule amid AI expansion plans

In short: Germany is weakening a rule that would have forced new data centers to reuse some of their waste heat, after developers said it made projects too hard to build.

What happened

Germany wants to expand its data center capacity by 2030 and increase the computing power available for artificial intelligence, which is the heavy number crunching used to run AI models. The goal is to rely less on the United States for AI infrastructure and to support economic growth.

At the same time, Germany and other EU countries have promised to cut greenhouse gas emissions by 55 percent by the end of the decade. That creates a push and pull, because data centers use large amounts of electricity and also generate a lot of heat.

In 2023, Germany passed an Energy Efficiency Act that required new data centers to reuse a portion of that heat, ideally by sending it into local heating networks. It is a bit like using the warm air from the back of a refrigerator to help heat a room, instead of wasting it.

Developers warned the rule could trap them. They could be required to deliver heat even if there was no nearby customer or heating system able to take it. In June, the government walked back the requirement. Under the amended bill, operators would only need to study whether heat reuse is practical and affordable, and they can be exempt if it is not.

Why it matters

This change could make Germany more attractive for new data center projects, but it may also increase public concerns about climate impact. Local opposition has already stopped at least one proposed data center project, and similar debates are playing out across Europe.

Source: Wired