Review power assets, contract observations, facility specifications and relationships from public sources.
This partial collection preserves source-level observations. Generation and registered connection capacity are distinct from spare supply capacity for data centers. Planned dates and contract announcements do not confirm energization or supply commencement.
Current filters 2items · current page 1–2 · Source records, not unique facilities.
Power assets and projects · USA · eia860
Mystic
Generation facilities · Unverified
Metric or condition
Source value
Basis, scope and stage
Grid Voltage (kV)
50 kV
Original source column definition · Power plant · Unverified As-of date 2025 Sources EV-ad06057fe18d2d1bcaae2222
Detailed source fields
Original source field
Published value or condition
Utility ID
13902
Utility Name
NorthWestern Energy (MT Hydro)
Plant Code
2192
Plant Name
Mystic
Street Address
2065 W. Rosebud Road
City
Fishtail
State
MT
Zip
59028
County
Stillwater
Latitude
45.225741
Longitude
-109.762489
NERC Region
WECC
Balancing Authority Code
NWMT
Balancing Authority Name
NorthWestern Energy (NWMT)
Name of Water Source
Mystic Lake
Primary Purpose (NAICS Code)
22
Regulatory Status
RE
Sector
1
Sector Name
Electric Utility
FERC Cogeneration Status
N
FERC Small Power Producer Status
N
FERC Exempt Wholesale Generator Status
Y
FERC Exempt Wholesale Generator Docket Number
99-185-000
Ash Impoundment?
N
Ash Impoundment Lined?
X
Transmission or Distribution System Owner
NorthWestern Energy LLC - (MT)
Transmission or Distribution System Owner ID
12825
Transmission or Distribution System Owner State
MT
Grid Voltage (kV)
50
Energy Storage
N
Natural Gas Storage
X
Liquefied Natural Gas Storage
X
Coordinate accuracy
source_precision_not_independently_surveyed
source_record_id
2___Plant_Y2025.xlsx#Plant:1133
Coordinates locate the plant, including when this record describes one generator.
Location: Plant location · not an individual generator location
Sources, reference dates and retrieval dates 1itemseia860 ↗
Data Source 2025 · Retrieved 2026-10-05
Source: U.S. Energy Information Administration (EIA), 2025 final / August 2026 preliminary.
