What it is

AFCOM’s 10th annual State of the Data Center report documents a step-function increase in rack density (16 kW to 27 kW YoY) and average facility size (32 MW to 38 MW), driven by AI workloads. 36% now deploy liquid cooling, while 40% report current cooling solutions inadequate, and 70% expect further density increases within 12-36 months.

Why it matters

A 69% year-over-year density increase from 16 kW to 27 kW per rack fundamentally reshapes power distribution and cooling architectures, forcing facilities managers to abandon incremental expansion models. With 40% reporting inadequate cooling and 72% expecting AI workloads to drive further capacity growth, operators face immediate pressure to secure scalable power early and re-architect thermal management, directly impacting construction timelines and infrastructure investment.

Evidence from source:

  • Average rack density reached 27 kW per rack this year, up from 16 kW last year – a 69% year-over-year increase and the largest jump in the report’s decade-long history (7 kW in 2021).
  • Average facility size now approaching 38 MW, up from 32 MW last year, reflecting a shift in baseline design assumptions driven by high-density AI workloads.
  • 36% of respondents have liquid cooling deployed, 28% plan adoption within 12-24 months, and nearly 40% report current cooling solutions do not fully meet operational requirements.

Open questions

  • What specific power distribution architectures (busway vs. branch circuit density) are operators adopting to support 27+ kW racks at scale?
  • How are facilities bridging the gap between current cooling inadequacy and liquid cooling deployment timelines given 12-36 month density forecasts?