Regional power headroom and constraint dynamics shift as Midwest interconnection velocity accelerates; three distinct ISOs now anchor hyperscaler site selection.
## Highlights
Upper Peninsula Michigan's DCPI excess-power score climbed to **74.4 this week**—entering the top three build markets nationally alongside Midland–Odessa (85.7, ERCOT) and Oklahoma City (74.0, SPP). The region's constraint floor sits at **19.0**, the lowest among the three leaders, signaling minimal grid friction for new load.
## What It Means
For capacity planners, this marks a structural shift in Midwest siting: MISO's Upper Peninsula now offers power availability comparable to hyperscaler-preferred Texas markets, but with tighter constraint headroom. Landholding and utility coordination cost less in Michigan; transmission interconnection risk is lower. A 5–10 GW multi-facility campus in the region would encounter fewer queue delays than equivalent capacity in ERCOT's saturated Midland corridor.
Second-order: The emergence of a third ISO (MISO) in the top-three build set signals that power-rich geography—not brand or regional familiarity—is now the primary siting variable. Developers without land or utility relationships in Texas or Oklahoma can move capex forward in Michigan *today* without waiting for ERCOT constraint relief. This reshuffles capex phasing across hyperscalers evaluating 2027–2028 groundbreaks.
## Methodology
The DCPI excess-power index measures available grid capacity minus interconnection queue load as a percentage of regional nameplate generation. Constraint floor reflects minimum point-of-delivery headroom across the study region. Three ISO anchors (ERCOT, MISO, SPP) now define the first tier of viable AI-scale build markets.
Source: DC Hub Data Center Power Index (https://dchub.cloud/dcpi). Updated daily.
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