DC Hub's daily power index shows Wyoming and Rural SPP leading US capacity rankings while Northern Virginia remains most constrained
## Highlights
Cheyenne, WY climbed to the top of DC Hub's DCPI Excess Power index with a score of 69.5, securing its position as the most power-abundant data center market in the United States. The Wyoming market, connected to the WECC grid, recorded a constraint score of just 22.5, indicating minimal infrastructure bottlenecks for new facility development.
Rural SPP (Kansas) followed closely at 67.2 excess capacity, while Allen, TX ranked third at 65.6, despite a higher constraint score of 30.8. All three top markets demonstrate strong grid connectivity and available capacity for hyperscale deployments.
## What It Means
The concentration of high-scoring markets in the Mountain West and SPP footprint reflects ongoing grid modernization and relative underbuilding in these regions. Meanwhile, Northern Virginia posted the nation's lowest excess score at 14.5 with a 64.2 constraint rating, underscoring the well-documented capacity crunch in the world's largest colocation hub. Phoenix (34.8 excess, 61.5 constraint) and Mount Pleasant, WI (55.0 excess, 80.0 constraint) also face infrastructure headwinds.
DC Hub's platform tracked 5,364 API tool calls from 266 unique callers in the past 24 hours, indicating sustained developer and enterprise interest in real-time capacity intelligence.
## Methodology
The DCPI Excess Power index synthesizes utility interconnection data, ISO capacity reports, and transmission constraints across 280+ US markets. Scores are updated daily and range from 0 (no capacity) to 100 (maximum available power).
**Source:** DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily.
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