SEWARD
SubstationAlaska · CHUGACH ELECTRIC ASSN INC
SEWARD is an electric transmission substation in Alaska, operated by CHUGACH ELECTRIC ASSN INC. It is classified as sub-transmission (115 kv) and connects 1 transmission line. 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 |
|---|---|---|---|---|
| #15414 | 115 kV | CHUGACH ELECTRIC ASSN INC | IN SERVICE | 38.5 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of SEWARD, 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 |
|---|---|---|---|---|---|---|---|
| DEADEND167051 | Substation-Adjacent | AK | Anchorage Municipality | 115 kV | 100 MW | 3.5 yrs | 57.5 |
| UNKNOWN158469 | Substation-Adjacent | AK | Anchorage Municipality | 115 kV | 100 MW | 3.5 yrs | 56.5 |
| SEWARD | Substation-Adjacent | AK | Anchorage Municipality | 115 kV | 100 MW | 3.5 yrs | 55.9 |
| QUARTZ CREEK | Substation-Adjacent | AK | Anchorage Municipality | 115 kV | 100 MW | 3.5 yrs | 55.9 |
| DAVE'S CREEK | Substation-Adjacent | AK | Anchorage Municipality | 115 kV | 100 MW | 3.5 yrs | 55.0 |
| Seward (AK) | Brownfield | AK | Anchorage Municipality | — | 3 MW | 3.5 yrs | 49.3 |
| Mine Site | Former Mine | AK | Kenai Peninsula County | — | — | — | 45.2 |
| Mine Site | Former Mine | AK | Kenai Peninsula County | — | — | — | 44.0 |
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 SEWARD substation, Alaska. 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.