Johnson County, Iowa
Johnson County, Iowa has 21 power projects in the FieldProspects database: 18 operating plants totaling 124.3 MW and 3 planned projects totaling 153.4 MW. No data center record lists the county. Solar leads with 154.4 MW across 3 projects. 3 planned projects are past their listed in-service date.
Johnson County and its neighbors
Counties shaded by data center MW on record, planned to operating. 6 of its 6 neighboring counties have pages of their own. The rest are in the member database.
Data center records planned, under construction and operating, data as of October 8, 2026.Hover a county for its numbers
more planned than operating generation in Johnson County. 3 projects in the queue would add 153.4 MW to the 124.3 MW operating today, and 3 of them are past their listed in-service date.
Technology mix
21 projects, 277.7 MW planned and operating
Power generation in the county
18 plants operate inside Johnson County, 124.3 MW. The queue adds 153.4 MW across 3 projects, and 3 of them are past their listed in-service date.
Operating and planned generation by technology
MW in Johnson County
View as table
| Technology | Status | Projects | MW |
|---|---|---|---|
| Solar | Operating | 1 | 3 |
| Solar | Planned | 2 | 151.4 |
| Natural Gas | Operating | 13 | 113.6 |
| Oil | Operating | 4 | 7.7 |
| Diesel | Planned | 1 | 2 |
Planned generation by listed in-service year
MW. Years before 2026 are past due.
View as table
| Year | Planned projects | MW |
|---|---|---|
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1.4 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 150 |
Johnson County against its neighbors
Linn County has the most data center MW among the neighbors, 2.8 GW. 4 of the 6 have more generation operating than data center MW on record.
| County | Data center records | Data center MW | Operating generation MW | Planned generation MW | Data center MW per MW operating |
|---|---|---|---|---|---|
| Linn County | 19 | 2,516 | 3.8x | ||
| Louisa County | 0 | 614 | 0x | ||
| Muscatine County | 0 | 638 | 0x | ||
| Iowa County | 0 | 0 | 0x | ||
| Johnson County this page | 0 | 153 | 0x | ||
| Cedar County | 0 | 9 | 0x | ||
| Washington County | 0 | 1,075 | no operating MW |
Data center MW counts records planned, under construction and operating. Generation is inside the county only. Neighbors without a page have fewer than three projects on record.
7 counties shownEvery record in Johnson County
Project name, developer, status, MW, in-service year and the developer’s contacts, for all 21 records. Filter, sort and export to Excel.
| Project or campus | Developer | Status | MW | Year | Contacts |
|---|---|---|---|---|---|
Rows are hidden on public pages. Members see every field and can export up to 1,000 rows a month on Solo, unlimited on Unlimited.
Get alerts for Johnson County
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Open every campus, project and contact in Johnson County.
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