CASTLE ROCK
Substation-AdjacentDakota County, Minnesota · MISO
At a glance
CASTLE ROCK is a substation-adjacent datacenter candidate site in Dakota County, Minnesota, scoring 58.0/100 DC Readiness — 68th of 374 scored sites in the county. Its nearest substation is CASTLE ROCK (0 mi, 69 kV). It sits in the MISO grid region and the DAKOTA ELECTRIC ASSOCIATION service territory, where interconnection has averaged 4.3 years from request to operation. GridCensus catalogs 50 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
Incentives available; large-load tariffs emerging.
Incentive detail: Sales tax exemption on DC equipment and electricity for qualified DCs.
Site location
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How does CASTLE ROCK compare with other sites in Dakota County?
CASTLE ROCK ranks 68th of 374 scored candidate sites in Dakota County. Its 58.0/100 is roughly in line with the county average of 56.1. It is roughly in line with the Minnesota average of 55.7 and roughly in line with the national average of 53.2.
Against the Minnesota average, its strongest sub-score is power availability (46 vs 39) and its weakest is speed to power (48 vs 49). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is CASTLE ROCK to power, fiber and other datacenters?
The nearest mapped substation, CASTLE ROCK, is about 0 miles away and operates at 69 kV. The nearest located transmission bottleneck is West_Memphis_AT1_161_500kV_flo_Sans_Souci_Driver (MISO), 48 miles away. For connectivity, the nearest internet exchange facility is DataBank Minneapolis (MSP2) at 20.3 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Datacenter 01454573843, 13.9 miles away.
What are the flood, water and hazard risks at CASTLE ROCK?
At the county level, FEMA's National Risk Index rates Dakota County "Relatively Moderate".
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 Dakota County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| UNKNOWN129590 | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 67.9 |
| HAMPTON | Substation-Adjacent | 345 kV | 600 MW | 4.3 yrs | 66.4 |
| BLACK DOG | Substation-Adjacent | 115 kV | 100 MW | 4.3 yrs | 65.9 |
| EC Near West Group Data Center F | Greenfield | — | — | 4.3 yrs | 64.7 |
| EC Near EKS Landfill | Greenfield | — | — | 4.3 yrs | 64.2 |
| EC Near Black Dog | Greenfield | — | — | 4.3 yrs | 63.8 |
| EC Near EKS Landfill | Greenfield | — | — | 4.3 yrs | 63.5 |
| EC Coal Dakota County | Greenfield | — | — | 4.3 yrs | 63.3 |
CASTLE ROCK: common questions
What is the DC Readiness score of CASTLE ROCK?
CASTLE ROCK scores 58.0/100 on the GridCensus DC Readiness scale, rated good. It ranks 68th of 374 scored sites in Dakota County. The Dakota County average is 56.1 and the Minnesota average is 55.7.
What is the nearest substation to CASTLE ROCK?
The nearest mapped substation is CASTLE ROCK, about 0 miles away, at 69 kV. GridCensus catalogs 50 MW of candidate capacity for the site.
Which electric utility serves CASTLE ROCK?
DAKOTA ELECTRIC ASSOCIATION (cooperative) holds the retail service territory that contains the site.
What grid region is CASTLE ROCK in?
CASTLE ROCK is in the MISO region. Projects interconnecting there have averaged a 4.3-year wait from queue request to operation.
How far is CASTLE ROCK from an internet exchange?
The nearest internet exchange facility is DataBank Minneapolis (MSP2), about 20.3 miles away; 16 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, “CASTLE ROCK, Dakota County, MN”, https://gridcensus.com/datacenter-sites/minnesota/dakota-county/castle-rock-d95a5410 (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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