POST ROCK
SubstationKansas · MIDWEST ENERGY INC
POST ROCK is an electric transmission substation in Kansas, operated by MIDWEST ENERGY INC. It is classified as high-voltage (345 kv) and connects 2 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 |
|---|---|---|---|---|
| #30162 | 345 kV | MIDWEST ENERGY INC | IN SERVICE | 0.2 mi |
| #39882 | 345 kV | MIDWEST ENERGY INC | IN SERVICE | 89.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of POST ROCK, 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 |
|---|---|---|---|---|---|---|---|
| POST ROCK | Substation-Adjacent | KS | Rush County | 345 kV | 600 MW | 3.5 yrs | 70.5 |
| LA CROSSE | Substation-Adjacent | KS | Rush County | 115 kV | 100 MW | 3.5 yrs | 67.3 |
| Greenfield (POST ROCK - SPEARVILLE) | Greenfield | KS | Pawnee County | 345 kV | 600 MW | 3.5 yrs | 66.4 |
| UNKNOWN119888 | Substation-Adjacent | KS | Rush County | 115 kV | 100 MW | 3.5 yrs | 66.2 |
| Greenfield (POST ROCK - SPEARVILLE) | Greenfield | KS | Rush County | 345 kV | 600 MW | 3.5 yrs | 66.0 |
| UNKNOWN119804 | Substation-Adjacent | KS | Ness County | 115 kV | 100 MW | 3.5 yrs | 65.8 |
| UNKNOWN119884 | Substation-Adjacent | KS | Rush County | 115 kV | 100 MW | 3.5 yrs | 65.4 |
| Greenfield (POST ROCK - SPEARVILLE) | Greenfield | KS | Pawnee County | 345 kV | 600 MW | 3.5 yrs | 64.6 |
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 POST ROCK substation, Kansas. 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.