## Highlights SPP's Oklahoma corridor—spanning Oklahoma City and Tulsa—maintains **77.0 excess-power index points** across both markets as of September 1, 2026, keeping both hubs in the **top five US build markets** alongside ERCOT's Midla
## Highlights
SPP's Oklahoma corridor—spanning Oklahoma City and Tulsa—maintains **77.0 excess-power index points** across both markets as of September 1, 2026, keeping both hubs in the **top five US build markets** alongside ERCOT's Midland–Odessa (85.7). Critically, the two Oklahoma markets diverge on constraint: Oklahoma City reports **46.7 constraint**, while Tulsa runs **49.0**, versus Midland–Odessa's 22.8—a structural difference that reshapes land and transmission capex for operators planning contiguous expansion.
## What It Means
Single operators evaluating dual-footprint deployment in SPP now face a clear trade: Oklahoma City offers 0.3 points higher excess power but trades 2.3 points of additional constraint friction versus Tulsa. For a 100 MW build, that difference translates to faster grid-interconnection timelines in Tulsa against marginally lower land and power costs in OKC. Hyperscalers committing >200 MW across both sites must now price fiber-latency overlap and shared transmission queuing—a capex variable that did not bind in prior single-market site-selection models.
The persistence of 77-point excess power in both hubs, despite September heat load in the Southern Plains, suggests sustained structural power surplus in SPP rather than seasonal volatility. Midland–Odessa's 8.7-point lead over Oklahoma reflects ERCOT's tighter interconnection queue and deeper industrial power draw, not a power-availability gap; operators choosing SPP over ERCOT now do so on transmission constraint and land cost, not power scarcity.
## Methodology
Excess-power and constraint indices are computed daily across 280+ US markets using live interconnection queue depth, real-time load profiles, and available transmission headroom. SPP Oklahoma markets reflect 24-hour rolling averages. DC Hub tracks 18,500+ facilities and 7 ISO footprints.
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Source: DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily.