JEFFREY
SubstationKansas · WESTAR ENERGY INC
JEFFREY is an electric transmission substation in Kansas, operated by WESTAR ENERGY INC. It is classified as high-voltage (345 kv) and connects 6 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 |
|---|---|---|---|---|
| #20102 | 345 kV | WESTAR ENERGY INC | IN SERVICE | 97.1 mi |
| #37101 | 345 kV | WESTAR ENERGY INC | IN SERVICE | 56.9 mi |
| #43044 | 345 kV | WESTAR ENERGY INC | IN SERVICE | 24.3 mi |
| #28201 | 230 kV | WESTAR ENERGY INC | IN SERVICE | 27.0 mi |
| #46059 | 230 kV | WESTAR ENERGY INC | IN SERVICE | 29.7 mi |
| #47367 | 230 kV | WESTAR ENERGY INC | — | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of JEFFREY, 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 |
|---|---|---|---|---|---|---|---|
| MORRIS | Substation-Adjacent | KS | Morris County | 345 kV | 600 MW | 3.5 yrs | 70.9 |
| EAST MANHATTAN | Substation-Adjacent | KS | Pottawatomie County | 230 kV | 300 MW | 3.5 yrs | 67.9 |
| MCDOWELL CREEK | Substation-Adjacent | KS | Geary County | 230 kV | 300 MW | 3.5 yrs | 67.5 |
| Greenfield (MORRIS - JEFFREY) | Greenfield | KS | Morris County | 345 kV | 600 MW | 3.5 yrs | 66.1 |
| Greenfield (MORRIS - JEFFREY) | Greenfield | KS | Wabaunsee County | 345 kV | 600 MW | 3.5 yrs | 64.7 |
| UNKNOWN157113 | Substation-Adjacent | KS | Riley County | 115 kV | 100 MW | 3.5 yrs | 64.5 |
| UNKNOWN118082 | Substation-Adjacent | KS | Geary County | 115 kV | 100 MW | 3.5 yrs | 64.4 |
| Greenfield (SUMMIT - JEFFREY) | Greenfield | KS | Pottawatomie County | 345 kV | 600 MW | 3.5 yrs | 64.2 |
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 JEFFREY 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.