Power by county

Washington: data center power by county

Browse the 39 counties in Washington with a data center power and grid screening profile. Compare substation counts and highest grid access voltage by county, then open a county for its full outlook.

State overview

Counties with a profile: 39 counties
Industrial retail rate (state industrial average): 6.9¢/kWh

The industrial retail rate is a state industrial average and applies to every county below. The per county figures are substation count and highest grid access voltage, which do vary by county.

Map

The same county map as the national page, framed to Washington. Switch layers to compare substations, grid access voltage, and more; the color scale is the national one, so a county reads the same shade here as nationally. Click a county to open its profile.

Transmission voltage

Up to 69 kV
115 to 138 kV
161 to 230 kV
287 to 345 kV
345 to 500 kV
500 kV and up

Voltage not known

About this layer

Highest transmission voltage reachable in or crossing the county, in kilovolts.

Source

Source: public records

How to read this

Each color is one measured quantity for that county, shown so you can read it and judge for yourself. Click a county, or choose one from the picker, to open its panel. The color scale is the national one, so a Washington county reads the same shade here as on the national map.

OverlayExisting data centers

Where data centers already stand. Off by default, and shown purely as background: the markers are context a reader can weigh, and this map draws no conclusions from them.

OverlayFreight rail

In-service freight mainline, the track heavy equipment like transformers and generator sets actually moves over. Off by default and shown purely as background: whether a line runs near a specific site is something to read off the map for yourself, not a judgment this map makes for you.

Counties

Sort by any column to browse. The order is a view of the data, not a ranking, and the list opens alphabetically by county. Select a county for its serving utilities, market, interconnection queue, and sources.

Published counties, sortable by county name, substation count, or highest grid access voltage. Listed for browsing, not ranked.

Adams	28	230 kV
Asotin	6	230 kV
Benton	116	500 kV
Chelan	66	500 kV
Clallam	56	230 kV
Clark	101	345 kV
Columbia	11	500 kV
Cowlitz	60	500 kV
Douglas	29	500 kV
Ferry	15	115 kV
Franklin	53	500 kV
Garfield	10	500 kV
Grant	111	500 kV
Grays Harbor	68	500 kV
Island	17	115 kV
Jefferson	20	230 kV
King	239	500 kV
Kitsap	53	230 kV
Kittitas	24	500 kV
Klickitat	51	500 kV
Lewis	52	500 kV
Lincoln	36	500 kV
Mason	24	230 kV
Okanogan	29	500 kV
Pacific	17	138 kV
Pend Oreille	15	230 kV
Pierce	228	500 kV
San Juan	27	115 kV
Skagit	43	500 kV
Skamania	13	500 kV
Snohomish	140	500 kV
Spokane	95	500 kV
Stevens	24	230 kV
Thurston	54	500 kV
Wahkiakum	2	115 kV
Walla Walla	35	500 kV
Whatcom	68	500 kV
Whitman	30	500 kV
Yakima	54	500 kV

What this is

These are screening-grade grid profiles for Washington, describing the public power picture around each county rather than any specific parcel. They are a starting point for siting diligence, not a substitute for an interconnection study. To screen a specific address, run it through the site tool.

Map