Power by county

Montana: data center power by county

Browse the 56 counties in Montana 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: 56 counties
Industrial retail rate (state industrial average): 7.0¢/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 Montana. 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 Montana 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.

Beaverhead	18	230 kV
Big Horn	50	500 kV
Blaine	16	230 kV
Broadwater	11	500 kV
Carbon	32	230 kV
Carter	6	115 kV
Cascade	46	230 kV
Chouteau	26	230 kV
Custer	24	230 kV
Daniels	14	115 kV
Dawson	13	230 kV
Deer Lodge	6	230 kV
Fallon	40	230 kV
Fergus	27	138 kV
Flathead	56	230 kV
Gallatin	31	230 kV
Garfield	1	69 kV
Glacier	27	230 kV
Golden Valley	15	500 kV
Granite	12	500 kV
Hill	27	230 kV
Jefferson	15	500 kV
Judith Basin	27	230 kV
Lake	25	230 kV
Lewis and Clark	27	230 kV
Liberty	10	115 kV
Lincoln	15	230 kV
Madison	19	115 kV
McCone	11	230 kV
Meagher	5	500 kV
Mineral	10	500 kV
Missoula	30	500 kV
Musselshell	18	115 kV
Park	29	230 kV
Petroleum	6	69 kV
Phillips	11	230 kV
Pondera	16	230 kV
Powder River	3	115 kV
Powell	19	500 kV
Prairie	12	230 kV
Ravalli	22	115 kV
Richland	38	115 kV
Roosevelt	35	230 kV
Rosebud	39	500 kV
Sanders	19	500 kV
Sheridan	24	115 kV
Silver Bow	35	230 kV
Stillwater	24	500 kV
Sweet Grass	13	230 kV
Teton	26	230 kV
Toole	15	230 kV
Treasure	13	500 kV
Valley	40	230 kV
Wheatland	18	500 kV
Wibaux	7	230 kV
Yellowstone	74	500 kV

What this is

These are screening-grade grid profiles for Montana, 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