Wyoming market and Kansas plains show strongest power headroom; colocation and AI infrastructure planners see clearest window for Q3 site selection.
## Highlights
Cheyenne, Wyoming (WECC) holds the highest excess-power score this week at **69.5 points**, with a grid constraint floor of 22.5 points. Rural SPP (Kansas) follows at 67.2 points, signaling sustained headroom across both the Rocky Mountain corridor and the southern plains. Neither market has tightened week-over-week; both remain in the top tier for new builds.
## What It Means
For site-selection and capacity teams, Cheyenne represents the rare combination of northern US rail access, stable interconnection timelines, and near-term power availability. Rural SPP similarly offers land cost and interconnect efficiency without the bidding war seen in Texas or northern California hubs. Teams should lock real estate and interconnection window requests in both markets within the next 45 days—as AI load continues to migrate inland, these secondary corridors will see incremental tightening by Q4.
The 69.5 and 67.2 scores reflect available capacity margin *above* minimum grid reliability thresholds, not absolute MW; they are comparable across ISOs and updated daily. This week's stability (no rank shift) means both markets remain viable for mid-scale (100–400 MW) colocation and hyperscaler expansion phases.
## Methodology
The DC Hub Power Index (DCPI) excess-power score measures available grid headroom as a percentile of regional constraint ceiling, normalized across ISOs. Constraint floor (22.5 points) represents the threshold below which new interconnect applications face queue delays or curtailment risk. Scores above 50 signal strong build-readiness; above 65 indicate strategic advantage for long-lead capex.
**Source:** DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily.