RISER158504
SubstationAlaska · SOUTHEAST ALASKA POWER AGENCY
RISER158504 is an electric transmission substation in Alaska, operated by SOUTHEAST ALASKA POWER AGENCY. It is classified as sub-transmission (115 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 |
|---|---|---|---|---|
| #10249 | 115 kV | SOUTHEAST ALASKA POWER AGENCY | IN SERVICE | 21.4 mi |
| #10250 | 115 kV | SOUTHEAST ALASKA POWER AGENCY | IN SERVICE | 3.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of RISER158504, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN158501 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 55.4 |
| UNKNOWN158502 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 55.4 |
| RISER158504 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 55.1 |
| UNKNOWN158500 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 53.8 |
| RISER158505 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 50.4 |
| RISER158503 | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 50.4 |
| WRANGELL | Substation-Adjacent | AK | Wrangell City and Borough | 115 kV | 100 MW | 3.5 yrs | 48.2 |
| UNKNOWN158506 | Substation-Adjacent | AK | Petersburg Borough | 115 kV | 100 MW | 3.5 yrs | 46.7 |
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 RISER158504 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.