Your Server Room Under Pressure:

The 2026 Energy Efficiency Act introduces strict requirements for server rooms and data centers operating in Germany. New installations must reach a PUE of 1.2, while existing environments must move toward 1.5 by 2027 and 1.3 by 2030. These values are difficult to achieve with traditional room‑based cooling, especially in small and medium‑sized IT environments where airflow paths are inconsistent and cooling losses are high. The regulation also requires operators to validate an energy management system, document consumption data and prepare for annual reporting. Many SMEs face significant challenges because their existing infrastructure was never designed for these efficiency levels.

At Lehmann IT, we support operators where the regulation is most demanding. Our strongest contribution lies in granular, rack‑level optimization, which is the fastest and most reliable way to reach the new efficiency targets without rebuilding an entire facility. Traditional room cooling wastes energy by conditioning the entire space, while our precision cooling solutions deliver cooling directly at the rack. This eliminates recirculation losses and reduces the dependency on oversized air conditioners. Because these systems can often be installed with minimal disruption, they allow operators to improve efficiency quickly and predictably.

A major part of the regulation is the requirement for waste‑heat reuse (ERF). New installations must reuse ten to twenty percent of their waste heat, which is extremely difficult with air‑based cooling because air does not carry heat efficiently. Our water‑based cooling systems solve this problem by capturing heat directly in water. Heat collected in a liquid medium is significantly easier to transport and can be integrated into building heating systems, buffer tanks or district heating networks. This makes water cooling the only realistic path for many operators to meet the ERF requirement.

The regulation also demands validated real‑time monitoring and accurate reporting. We support this with intelligent PDUs, environmental sensors and PUE monitoring that provide reliable consumption data for audits. This ensures operators can document compliance without additional tools or manual processes. For facilities close to the 300‑kilowatt threshold, we help optimize cooling and reduce connected load so operators can avoid unnecessary upgrades or stay below the mandate’s trigger.

The 2026 regulation raises the technical requirements for server rooms significantly. We provide the strongest support where the law is most demanding: achieving PUE compliance through water‑cooled racks, enabling waste‑heat reuse through liquid heat transfer, delivering real‑time monitoring for reporting and helping operators near the threshold remain compliant without rebuilding their entire infrastructure.