Substation-Adjacent site at 38.685, -90.201
Substation-AdjacentSt. Louis County, Missouri · MISO
At a glance
Substation-Adjacent site at 38.685, -90.201 is a substation-adjacent datacenter candidate site in St. Louis County, Missouri, scoring 61.2/100 DC Readiness — 17th of 374 scored sites in the county. Its nearest substation is TAP167221 (0 mi, 138 kV). It sits in the MISO grid region and the UNION ELECTRIC CO - (MO) service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Qualified data center sales tax exemption (2019 law); state income tax credits.
Site location
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How does Substation-Adjacent site at 38.685, -90.201 compare with other sites in St. Louis County?
Substation-Adjacent site at 38.685, -90.201 ranks 17th of 374 scored candidate sites in St. Louis County. Its 61.2/100 is roughly in line with the county average of 56.2. It is roughly in line with the Missouri average of 55.7 and about 15% above the national average of 53.2.
Against the Missouri average, its strongest sub-score is power availability (58 vs 37) and its weakest is speed to power (49 vs 53). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Substation-Adjacent site at 38.685, -90.201 to power, fiber and other datacenters?
The nearest mapped substation, TAP167221, is about 0 miles away and operates at 138 kV. For connectivity, the nearest internet exchange facility is TierPoint St. Louis - Locust at 3.6 miles. 8 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is TierPoint, 3.8 miles away.
What are the flood, water and hazard risks at Substation-Adjacent site at 38.685, -90.201?
At the county level, FEMA's National Risk Index rates St. Louis County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in St. Louis County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| American Bottoms Solar Project | Brownfield | 345 kV | 2 MW | 4.3 yrs | 69.4 |
| CAHOKIA | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 67.6 |
| UNKNOWN117735 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.0 |
| TAP139481 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 66.6 |
| UNKNOWN121705 | Substation-Adjacent | 138 kV | 100 MW | 4.8 yrs | 65.9 |
| OZ St. Louis | Greenfield | — | — | 4.3 yrs | 65.1 |
| OZ St. Louis | Greenfield | — | — | 4.3 yrs | 64.9 |
| OZ St. Louis | Greenfield | — | — | 4.3 yrs | 64.5 |
Substation-Adjacent site at 38.685, -90.201: common questions
What is the DC Readiness score of Substation-Adjacent site at 38.685, -90.201?
Substation-Adjacent site at 38.685, -90.201 scores 61.2/100 on the GridCensus DC Readiness scale, rated good. It ranks 17th of 374 scored sites in St. Louis County. The St. Louis County average is 56.2 and the Missouri average is 55.7.
What is the nearest substation to Substation-Adjacent site at 38.685, -90.201?
The nearest mapped substation is TAP167221, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves Substation-Adjacent site at 38.685, -90.201?
UNION ELECTRIC CO - (MO) (investor owned) holds the retail service territory that contains the site; its holding company is AMEREN CORP.
What grid region is Substation-Adjacent site at 38.685, -90.201 in?
Substation-Adjacent site at 38.685, -90.201 is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is Substation-Adjacent site at 38.685, -90.201 from an internet exchange?
The nearest internet exchange facility is TierPoint St. Louis - Locust, about 3.6 miles away; 8 fiber providers report service at the location.
Related pages
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 October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent site at 38.685, -90.201, St. Louis County, MO”, https://gridcensus.com/datacenter-sites/missouri/st-louis-county/tap167221-c6dcef4d (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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Every site and score for Substation-Adjacent site at 38.685, -90.201, St. Louis County 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.