## Highlights The Southwest Power Pool (SPP) ISO now holds **five of the top eight US build markets by excess power**, with a median DCPI score of **73.6** across Oklahoma City (77.0), Tulsa (77.0), Kansas City (73.6), North Kansas City (7
## Highlights
The Southwest Power Pool (SPP) ISO now holds **five of the top eight US build markets by excess power**, with a median DCPI score of **73.6** across Oklahoma City (77.0), Tulsa (77.0), Kansas City (73.6), North Kansas City (73.6), and Rural Kansas (72.4). No other ISO places more than two markets in the top ten, and no SPP market in the top cohort scores below 72 on the excess-power index.
This creates a **600-mile contiguous corridor from Tulsa to western Kansas** where constraint scores remain below 50 and excess power consistently exceeds 72. For hyperscale developers, that translates to predictable energization timelines, lower interconnection risk, and the ability to phase multi-site builds without geographic fragmentation.
## What It Means for Site Selection
When one ISO dominates half the top-ten list, capex models shift. Developers who would historically diversify across three ISOs to hedge regulatory risk can now concentrate capital in SPP and still achieve geographic redundancy across Oklahoma, Missouri, and Kansas. The constraint-score uniformity (all five markets below 50) means interconnection queues are clearing faster than in ERCOT or MISO equivalents, shortening time-to-power by 12-18 months in typical cases.
The second-order effect: land acquisition in SPP markets that ranked 15th-25th six months ago—Wichita, Topeka, Springfield MO—now warrants a fresh look. If the top five tighten on fiber or permitting, the next tier still scores above 65 on excess power, a threshold that would rank top-three in PJM or CAISO.
## Methodology
Source: DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily at 06:00 UTC. DCPI scores 327 US markets on Excess Power (generation headroom, renewable penetration, queue velocity) and Constraint (interconnection delay, transmission limits, regulatory friction). Scores range 0-100; markets above 70 excess power historically energize new load 40% faster than sub-50 peers.
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