MISO Datacenter Sites
Midcontinent Independent System Operator
At a glance
MISO runs the grid across 15 central US states. Deep industrial land inventory and competitive power pricing make it an emerging datacenter frontier, though queue timelines have lengthened.
How does MISO compare with other grid regions?
By site count MISO is the 2nd-largest of 9 regions GridCensus tracks, with 31,047 candidate sites. Its average DC Readiness of 54.7 is the 3rd-highest of 9, above the 53.0 national average. The average interconnection-queue wait of 3.7 yrs is the 3rd-shortest of 9. Sites here see an average queue depth of 139 projects at their nearest point of interconnection. Catalogued substation capacity near these sites sums to 1.2M MW, a theoretical aggregate rather than available headroom.
Which states and site types make up MISO?
Indiana (6,604 sites, 21%), Michigan (4,857 sites, 16%) and Wisconsin (3,326 sites, 11%) hold the largest shares of the region's candidate sites. By type, industrial sites make up 31% (9,518; 24% nationally), substation-adjacent sites make up 27% (8,368; 26% nationally) and greenfield sites make up 16% (4,919; 12% nationally).
Member states
By site type
- Industrial9,518
- Substation-Adjacent8,368
- Greenfield4,919
- Manufacturing4,514
- Former Mine2,903
- Federal Excess435
- Shovel-Ready237
- Brownfield148
- Military BRAC5
What are MISO sites strongest and weakest on?
MISO is strongest on water, averaging 87.9 against a national average of 72.3; its weakest factor is power availability, at 37.0 versus 37.4 nationally. Each factor is scored 0–100, where higher is better (for water and hazard, higher means lower stress and lower risk).
Top 25 datacenter sites in MISO
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| OAK CREEK STATION | Substation-Adjacent | WI | Milwaukee County | 345 kV | 600 MW | 4.3 yrs | 72.3 |
| WILLOW GLEN (500KV) | Substation-Adjacent | LA | Ascension Parish | 500 kV | 1,000 MW | 4.3 yrs | 71.9 |
| SHAWNEE | Substation-Adjacent | KY | Massac County | 500 kV | 1,000 MW | 4.3 yrs | 71.3 |
| UNKNOWN124886 | Substation-Adjacent | IN | Dearborn County | 345 kV | 600 MW | 3.0 yrs | 71.1 |
| PLEASANT PRAIRIE | Substation-Adjacent | WI | Kenosha County | 345 kV | 600 MW | 4.3 yrs | 71.1 |
| BROWN (345 KV) | Substation-Adjacent | IN | Vanderburgh County | 345 kV | 600 MW | 3.0 yrs | 70.8 |
| WALTER SCOTT ENERGY CENTER | Substation-Adjacent | IA | Mills County | 345 kV | 600 MW | 4.3 yrs | 70.2 |
| UNKNOWN130427 | Substation-Adjacent | IA | Dakota County | 345 kV | 600 MW | 4.3 yrs | 69.9 |
| BLUE LAKE | Substation-Adjacent | MN | Scott County | 345 kV | 600 MW | 4.3 yrs | 69.8 |
| PARKERS LAKE | Substation-Adjacent | MN | Hennepin County | 345 kV | 600 MW | 4.3 yrs | 69.8 |
| EDEN PRAIRIE | Substation-Adjacent | MN | Hennepin County | 345 kV | 600 MW | 4.3 yrs | 69.7 |
| TERMINAL | Substation-Adjacent | MN | Ramsey County | 345 kV | 600 MW | 4.3 yrs | 69.7 |
| CARDINAL | Substation-Adjacent | WI | Dane County | 345 kV | 600 MW | 4.3 yrs | 69.6 |
| WAYNE | Substation-Adjacent | MI | Wayne County | 345 kV | 600 MW | 2.2 yrs | 69.6 |
| UNKNOWN124909 | Substation-Adjacent | IN | Floyd County | 230 kV | 300 MW | 3.0 yrs | 69.5 |
| GRAND FORKS | Substation-Adjacent | ND | Grand Forks County | 345 kV | 600 MW | 4.3 yrs | 69.5 |
| SCOTT CO | Substation-Adjacent | MN | Scott County | 345 kV | 600 MW | 4.3 yrs | 69.5 |
| American Bottoms Solar Project | Brownfield | MO | St. Louis | 345 kV | 2 MW | 4.3 yrs | 69.4 |
| UNKNOWN112075 | Substation-Adjacent | LA | West Feliciana Parish | 500 kV | 1,000 MW | 4.3 yrs | 69.3 |
| BONDURANT | Substation-Adjacent | IA | Polk County | 345 kV | 600 MW | 4.3 yrs | 69.3 |
| UNKNOWN128399 | Substation-Adjacent | MI | Macomb County | 345 kV | 600 MW | 2.2 yrs | 69.3 |
| GREATER DES MOINES ENERGY CENTER | Substation-Adjacent | IA | Polk County | 345 kV | 600 MW | 4.3 yrs | 69.1 |
| SE POLK | Substation-Adjacent | IA | Polk County | 345 kV | 600 MW | 4.3 yrs | 69.0 |
| WEEDS LAKE | Substation-Adjacent | MI | Kalamazoo County | 345 kV | 600 MW | 2.2 yrs | 69.0 |
| GAINES | Substation-Adjacent | MI | Kent County | 345 kV | 600 MW | 2.2 yrs | 69.0 |
MISO FAQ
What is MISO?
Midcontinent Independent System Operator (MISO) MISO runs the grid across 15 central US states. Deep industrial land inventory and competitive power pricing make it an emerging datacenter frontier, though queue timelines have lengthened.
How many datacenter sites are in the MISO region?
GridCensus catalogs 31,047 scored datacenter candidate sites in MISO, averaging 54.7/100 DC Readiness — 21% of all sites scored nationally.
What is the average interconnection-queue wait in MISO?
Candidate sites in MISO average a 3.7 yrs queue wait with an average queue depth of 139 projects, the 3rd-shortest of 9 regions.
Which state has the most MISO datacenter sites?
Indiana has the most, with 6,604 scored sites (21% of the region), followed by Michigan with 4,857.
What is the highest-scoring datacenter site in MISO?
OAK CREEK STATION in Milwaukee County, Wisconsin scores 72.3/100, the highest DC Readiness Score in the region.
Other grid regions
Related rankings and tools
Dataset updated . Screening estimates derived from public data sources.
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “MISO datacenter candidate sites”, https://gridcensus.com/iso/miso (data as of November 12, 2026).
Go deeper than the public screen
Every site and score for MISO is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.