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
Johnson County Hills Solar
Generation facilities · Unverified
Metric or condition
Source value
Basis, scope and stage
Grid Voltage (kV)
13.2 kV
Original source column definition · Power plant · Unverified As-of date 2025 Sources EV-756db4cf5a17c60e606467b1
Detailed source fields
Original source field
Published value or condition
Utility ID
12341
Utility Name
MidAmerican Energy Co
Plant Code
64985
Plant Name
Johnson County Hills Solar
Street Address
4945 Oak Crest Hill Road SE
City
Iowa City
State
IA
Zip
52240
County
Johnson
Latitude
41.57232
Longitude
-91.54302
NERC Region
MRO
Balancing Authority Code
MISO
Balancing Authority Name
Midcontinent Independent Transmission System Operator, Inc..
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
N
Transmission or Distribution System Owner
MidAmerican Energy Co
Transmission or Distribution System Owner ID
12341
Transmission or Distribution System Owner State
IA
Grid Voltage (kV)
13.2
Energy Storage
N
Coordinate accuracy
source_precision_not_independently_surveyed
source_record_id
2___Plant_Y2025.xlsx#Plant:12173
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.
