STEM BEACH
SubstationColorado · SAN ISABEL ELECTRIC ASSN, INC
STEM BEACH is an electric transmission substation in Colorado, operated by SAN ISABEL ELECTRIC ASSN, INC. It is classified as sub-transmission (115 kv) and connects 4 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
Ownership & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #68873 | 115 kV | TRI-STATE G & T ASSN, INC | — | 12.7 mi |
| #72183 | 115 kV | TRI-STATE G & T ASSN, INC | — | 5.1 mi |
| #78759 | 115 kV | SAN ISABEL ELECTRIC ASSN, INC | — | 14.4 mi |
| #79114 | 115 kV | TRI-STATE G & T ASSN, INC | — | 38.1 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of STEM BEACH, 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 |
|---|---|---|---|---|---|---|---|
| COMANCHE | Substation-Adjacent | CO | Pueblo County | 345 kV | 600 MW | 1.7 yrs | 73.7 |
| PUEBLO | Substation-Adjacent | CO | Pueblo County | 230 kV | 300 MW | 1.7 yrs | 69.1 |
| Pueblo Airport Generating Station | Brownfield | CO | Pueblo | — | 100 MW | — | 66.5 |
| PUEBLO AIRPORT GENERATING STATION | Substation-Adjacent | CO | Pueblo County | 115 kV | 100 MW | 1.7 yrs | 65.9 |
| UNKNOWN208082 | Substation-Adjacent | CO | Pueblo County | 138 kV | 100 MW | 1.7 yrs | 63.9 |
| UNKNOWN203927 | Substation-Adjacent | CO | Pueblo County | 138 kV | 100 MW | 1.7 yrs | 63.7 |
| UNKNOWN208091 | Substation-Adjacent | CO | Pueblo County | 115 kV | 100 MW | 1.7 yrs | 63.5 |
| UNKNOWN208089 | Substation-Adjacent | CO | Pueblo County | 115 kV | 100 MW | 1.7 yrs | 63.1 |
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 STEM BEACH substation, Colorado. 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.