SPP Datacenter Sites
Southwest Power Pool
SPP coordinates the central plains. Among the windiest grids in North America, it offers some of the lowest energy prices and shortest queues — attractive for power-hungry, latency-tolerant workloads.
14,428
Candidate sites
53.4/100
Avg DC Readiness
589.5k MW
Catalogued capacity
theoretical aggregate
3.3 yrs
Avg queue wait
Member states
- Oklahoma3,703
- Kansas2,317
- Nebraska2,290
- Montana1,801
- New Mexico1,495
- South Dakota1,140
- North Dakota1,008
- Nevada374
- New York97
- Colorado43
- Texas37
- Minnesota27
- New Jersey26
- New Hampshire20
- Idaho12
- Arizona12
- Wyoming7
- Iowa6
- Missouri4
- Arkansas3
- Washington2
- Indiana1
- Illinois1
- Georgia1
- South Carolina1
By site type
- Substation-Adjacent4,969
- Industrial3,128
- Federal Excess2,996
- Greenfield1,743
- Former Mine1,538
- Brownfield53
- Military BRAC1
Average sub-score profile
Power availability
38.5
Speed-to-power
54.4
Fiber
65.9
Water
57.2
Hazard resilience
71.0
Top 25 datacenter sites in SPP
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| COLSTRIP | Substation-Adjacent | MT | Rosebud County | 500 kV | 1,000 MW | 3.3 yrs | 73.8 |
| SPLIT ROCK | Substation-Adjacent | SD | Minnehaha County | 345 kV | 600 MW | 3.3 yrs | 70.5 |
| EC Coal Pennington County | Greenfield | SD | Pennington County | — | — | 1.0 yrs | 70.1 |
| GRAND FORKS | Substation-Adjacent | ND | Grand Forks County | 345 kV | 600 MW | 3.3 yrs | 69.7 |
| OZ Yankton | Greenfield | SD | Yankton | — | — | 1.0 yrs | 69.3 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 1.0 yrs | 69.0 |
| SIOUX FALLS | Substation-Adjacent | SD | Minnehaha County | 230 kV | 300 MW | 3.3 yrs | 68.8 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 1.0 yrs | 68.4 |
| SOUTH RAPID CITY | Substation-Adjacent | SD | Pennington County | 230 kV | 300 MW | 3.3 yrs | 68.4 |
| EC Near Pathfinder | Greenfield | SD | Minnehaha | — | — | 1.0 yrs | 68.2 |
| VIRGIL FODNESS | Substation-Adjacent | SD | Lincoln County | 230 kV | 300 MW | 3.3 yrs | 68.0 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 1.0 yrs | 67.8 |
| EC Coal Pennington County | Greenfield | SD | Pennington County | — | — | 1.0 yrs | 67.8 |
| OZ Minnehaha | Greenfield | SD | Minnehaha | — | — | 1.0 yrs | 67.8 |
| OZ Grand Forks | Greenfield | ND | Grand Forks | — | — | 1.4 yrs | 67.8 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 1.0 yrs | 67.7 |
| OZ Grand Forks | Greenfield | ND | Grand Forks | — | — | 1.4 yrs | 67.7 |
| FORT CALHOUN | Substation-Adjacent | NE | Washington County | 345 kV | 600 MW | 3.3 yrs | 67.6 |
| ELLENDALE | Substation-Adjacent | ND | Dickey County | 230 kV | 300 MW | 3.3 yrs | 67.6 |
| EC Coal Pennington County | Greenfield | SD | Pennington County | — | — | 1.0 yrs | 67.6 |
| LANGE | Substation-Adjacent | SD | Pennington County | 230 kV | 300 MW | 3.3 yrs | 67.4 |
| RAPID CITY DC TIE | Substation-Adjacent | SD | Pennington County | 230 kV | 300 MW | 3.3 yrs | 67.4 |
| EC Near Ben French | Greenfield | SD | Pennington | — | — | 1.0 yrs | 67.3 |
| MAPLE RIVER | Substation-Adjacent | ND | Cass County | 345 kV | 600 MW | 3.3 yrs | 67.3 |
| BROADVIEW | Substation-Adjacent | MT | Golden Valley County | 500 kV | 1,000 MW | 3.3 yrs | 67.2 |
SPP FAQ
- What is SPP?
- Southwest Power Pool (SPP) SPP coordinates the central plains. Among the windiest grids in North America, it offers some of the lowest energy prices and shortest queues — attractive for power-hungry, latency-tolerant workloads.
- How many datacenter sites are in the SPP region?
- GridCensus catalogs 14,428 scored datacenter candidate sites in SPP, averaging 53.4/100 DC Readiness.
- What is the average interconnection-queue wait in SPP?
- Candidate sites in SPP average a 3.3 yrs queue wait with an average queue depth of 12 projects.
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for SPP. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.