## Cheyenne, Wyoming climbs to fourth in the DC Hub Power Index with 72.5 excess power and 28.5% constraint—making it the highest-ranked WECC market and one of only three sub-30% constraint metros in the top eight. The WECC ISO placement i
## Cheyenne, Wyoming climbs to fourth in the DC Hub Power Index with 72.5 excess power and 28.5% constraint—making it the highest-ranked WECC market and one of only three sub-30% constraint metros in the top eight.
The WECC ISO placement is significant: while Arizona's Gilbert (71.7 excess, 36.9% constraint) and Scottsdale (71.3, 38.3%) rank fifth and eighth, Cheyenne's 28.5% constraint ratio matches the transmission-light profile of ERCOT's Midland–Odessa (85.7, 22.8%) and SPP's Rural Kansas (71.6, 22.5%). For site-selection leads, that means faster interconnection timelines and fewer EIS delays in a state with favorable capex treatment.
## What it means for build decisions
The top-eight list now includes **three ISOs with sub-40% constraint ratios**: ERCOT (Midland–Odessa), SPP (Oklahoma City at 73.9, Rural SPP at 71.6), MISO (Upper Peninsula MI at 74.4, Williston ND at 71.4), and WECC (Cheyenne, Gilbert, Scottsdale). Oklahoma City remains the outlier—73.9 excess but 48.8% constraint—suggesting metro-load congestion even as SPP's rural corridors stay open.
For developers targeting Western load, Cheyenne offers the cleanest WECC entry: lower land cost than Phoenix, no California interconnection queue, and a constraint profile that matches the least-contested ERCOT and SPP zones. The 72.5 excess score puts it ahead of both Arizona metros, and the 28.5% constraint makes it the only WECC market in the sub-30% tier.
## The second ISO dynamic
The list also reveals **Wyoming as the only WECC state with a top-five market**—while California, Oregon, and Washington remain absent from the top 20. That concentration risk matters for hyperscalers building Western redundancy: if Arizona tightens or Dublin/London-style moratoriums arrive, Cheyenne becomes the last WECC corridor with 70+ excess and transmission headroom. The 28.5% constraint is already half of Oklahoma City's 48.8%, and WECC's queue is shorter than SPP's by 40 GW.
Source: DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Covers 323 US markets, 16 international metros, and 7 ISOs with daily updates from public grid filings. Press inquiries: [email protected] · DC Hub MCP API: https://dchub.cloud/mcp