ARROWHEAD
SubstationMinnesota · ALLETE, INC.
ARROWHEAD is an electric transmission substation in Minnesota, operated by ALLETE, INC.. It is classified as high-voltage (345 kv) and connects 11 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #21879 | 345 kV | — | IN SERVICE | 79.0 mi |
| #37147 | 230 kV | ALLETE, INC. | IN SERVICE | 47.7 mi |
| #34973 | 230 kV | ALLETE, INC. | IN SERVICE | 55.3 mi |
| #35658 | 230 kV | ALLETE, INC. | IN SERVICE | 0.8 mi |
| #40238 | 115 kV | ALLETE, INC. | IN SERVICE | 10.9 mi |
| #42349 | 115 kV | ALLETE, INC. | IN SERVICE | 12.8 mi |
| #7131 | 115 kV | ALLETE, INC. | IN SERVICE | 1.1 mi |
| #43340 | 115 kV | ALLETE, INC. | IN SERVICE | 7.6 mi |
| #22572 | 115 kV | ALLETE, INC. | IN SERVICE | 5.5 mi |
| #28892 | 115 kV | ALLETE, INC. | IN SERVICE | 19.4 mi |
| #33183 | 115 kV | ALLETE, INC. | IN SERVICE | 3.4 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of ARROWHEAD, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| HILLTOP 230/115KV | Substation-Adjacent | MN | Carlton County | 230 kV | 300 MW | 1.4 yrs | 73.0 |
| UNKNOWN129277 | Substation-Adjacent | MN | Carlton County | 115 kV | 100 MW | 1.4 yrs | 71.7 |
| M L Hibbard | Brownfield | WI | Douglas | — | 50 MW | — | 71.4 |
| UNKNOWN130957 | Substation-Adjacent | WI | Douglas County | 115 kV | 100 MW | 1.4 yrs | 71.2 |
| TAP135605 | Substation-Adjacent | MN | Carlton County | 230 kV | 300 MW | 1.4 yrs | 70.0 |
| Greenfield (STONE LAKE - ARROWHEAD) | Greenfield | MN | Carlton County | 345 kV | 600 MW | 1.4 yrs | 70.0 |
| POTLATCH 115KV | Substation-Adjacent | MN | Carlton County | 115 kV | 100 MW | 1.4 yrs | 69.9 |
| LAKE SUPERIOR PAPER | Substation-Adjacent | WI | Douglas County | 115 kV | 100 MW | 1.4 yrs | 69.9 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for ARROWHEAD substation, Minnesota. 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.