Electric Substations in Alaska
23 named substations in Alaska, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.
At a glance
How is Alaska's substation network split by voltage?
By maximum voltage, the named substations break down as 5 at 230–344 kV; 16 at 115–229 kV; 1 at 69–114 kV; 1 withvoltage not recorded. 0% of Alaska's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 115 kV is level with the national median of 115 kV.
How does Alaska compare with other states?
Alaska ranks 49th of 50 states and DC by number of named substations. It also has 817 scored datacenter candidate sites with an average DC Readiness score of 50.3 (national average 53), and an average power sub-score of 33.8 against 37.4 nationally. Most of those sites (150) are in the SERC market.
Which substations in Alaska have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| BELUGA | 230 kV | 3 | CHUGACH ELECTRIC ASSN INC |
| EKLUTNA | 230 kV | 6 | CHUGACH ELECTRIC ASSN INC |
| PT. MACKENZIE | 230 kV | 6 | CHUGACH ELECTRIC ASSN INC |
| TEELAND | 230 kV | 3 | CHUGACH ELECTRIC ASSN INC |
| UNIVERSITY | 230 kV | 5 | CHUGACH ELECTRIC ASSN INC |
| DOUGLAS | 138 kV | 2 | CHUGACH ELECTRIC ASSN INC |
| BERNICE | 115 kV | 1 | CHUGACH ELECTRIC ASSN INC |
| BRADLEY LAKE | 115 kV | 2 | ALASKA ELECTRIC & ENERGY COOP |
| DAVE'S CREEK | 115 kV | 3 | CHUGACH ELECTRIC ASSN INC |
| DIAMOND RIDGE | 115 kV | 2 | ALASKA ELECTRIC & ENERGY COOP |
| FOSSIL CREEK | 115 kV | 3 | — |
| HOSPITAL | 115 kV | 2 | CHUGACH ELECTRIC ASSN INC |
| KETCHIKAN | 115 kV | 1 | SOUTHEAST ALASKA POWER AGENCY |
| NEW STERLING | 115 kV | 2 | CHUGACH ELECTRIC ASSN INC |
| NIKISKI | 115 kV | 1 | CHUGACH ELECTRIC ASSN INC |
| O'NEIL | 115 kV | 1 | CHUGACH ELECTRIC ASSN INC |
| QUARTZ CREEK | 115 kV | 3 | CHUGACH ELECTRIC ASSN INC |
| SEWARD | 115 kV | 1 | CHUGACH ELECTRIC ASSN INC |
| SOLDOTNA | 115 kV | 5 | CHUGACH ELECTRIC ASSN INC |
| SWAN | 115 kV | 2 | SOUTHEAST ALASKA POWER AGENCY |
| TYEE | 115 kV | 2 | SOUTHEAST ALASKA POWER AGENCY |
| COOPER LAKE | 69 kV | 1 | CHUGACH ELECTRIC ASSN INC |
| THEODORE | — | 0 | — |
Every named substation in Alaska
All 23 named substations, grouped by voltage band.
230–344 kV · 5
115–229 kV · 16
69–114 kV · 1
voltage not recorded · 1
Frequently asked questions
How many electric substations are in Alaska?
HIFLD records 174 substations in Alaska, of which 23 carry a station name. That is the 49th-most named substations of any state in the dataset.
What is the highest-voltage substation in Alaska?
5 named substations in Alaska share the top voltage of 230 kV, including BELUGA, EKLUTNA, PT. MACKENZIE.
Which substation in Alaska connects the most transmission lines?
EKLUTNA has the most connected transmission lines of the named substations listed here, with 6 at up to 230 kV.
How many substations in Alaska are 345 kV or higher?
0 of 23 named substations (0%) operate at 345 kV or above, compared with 8% nationally.
How many datacenter candidate sites in Alaska are at substations?
114 of the 817 scored candidate sites in Alaska are substation sites — locations generated at an existing substation. Scored sites across Alaska average 50.3 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Alaska, A to Z.
More on Alaska, and states with similar counts
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Electric substations in Alaska”, https://gridcensus.com/substations/alaska (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for substations in Alaska is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.