Shiawassee County, Michigan: Power, Data Centers and the Local Economy
Home to Owosso, Owosso Township and Caledonia Township
No data center or power plant project is on record in Shiawassee County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Shiawassee County is home to Owosso, Owosso Township, Caledonia Township and Vernon Township. Construction employs 822, up 24.9% since 2019. Next door, Genesee County has 3 data centers. 279 MW of that came online in 2019 or later, mostly solar. Its power plants have 287 MW of capacity, 97% of it solar.
Cities and towns in Shiawassee County
Shiawassee County is home to Owosso, Owosso Township, Caledonia Township and Vernon Township.
And 3 smaller places.
Unincorporated communities (governed by the county): Henderson, Middletown, Shaftsburg.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Shiawassee County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Michigan |
|---|---|---|---|---|
| Population (2020 → 2025) | 67,990 | 67,681 | ▼ 0.5% | 29th of 83 by size |
| Total jobs (2019 → 2025) | 15,674 | 15,490 | ▼ 1.2% | 54th of 83 by growth |
| Average annual pay (2019 → 2025) | $40,745 | $54,419 | ▲ 33.6% | — |
| Construction jobs (2019 → 2025) | 658 | 822 | ▲ 24.9% | 15th of 69 by growth |
| Unemployment rate (2019 → August 2026) | 4.2% | 4.8% | ▲ 0.6pts | — |
| Generating capacity added since 2019 | — | 279 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — |
Unemployment was 4.8% in August 2026, against 4.2% in 2019. DTE Electric Company is the largest utility serving Shiawassee County, one of 2 with territory here. Its residential customers paid an average 20.13¢/kWh in 2024, above the 16.89¢ median for Michigan utilities. Employers here counted 15,490 jobs in 2025, down 1.2% from 2019. 67,681 people live here, down 0.5% since 2020.
Who powers Shiawassee County
Net change in operating capacity since 2019: +279 MW. Colors follow the fuel legend above.
Utilities with service territory in Shiawassee County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| DTE Electric Company | Investor Owned | Bundled | 2,067,779 | 20.13¢ | 41% |
| Consumers Energy Co - (MI) | Investor Owned | Bundled | 1,657,843 | 19.11¢ | 36% |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 7
| Technology | Capacity | Share |
|---|---|---|
| Solar | 279 MW | 97% |
| Other technologies | 8 MW | 3% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Assembly Solar II LLC | Assembly Solar II LLC | Solar | 110 MW | 2021 |
| Assembly Solar III | Assembly Solar III, LLC | Solar | 79 MW | 2022 |
| Assembly Solar Project | Assembly Solar I, LLC | Solar | 50 MW | 2020 |
| Lyons Road | Lyons Road Solar, LLC | Solar | 20 MW | 2022 |
| Midcontinent Solar, LLC | Midcontinent Solar, LLC | Solar | 20 MW | 2023 |
| Lennon Generating | North American Natural Res | Other technologies | 6 MW | 2012 |
The Shiawassee County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 15,490 | $54,419 | 1.00 |
| Construction | 822 | $63,148 | 1.00 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Shiawassee County
No data center, local measure or delayed project is on record in Shiawassee County. Michigan has 91 local measures on record statewide, and 2 neighboring counties have one: Clinton County, Livingston County.
Shiawassee County and its neighbors
Of the 6 counties that border Shiawassee County, Gratiot County carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Shiawassee County | 67,681 | ▼ 1.2% | 287 MW | — | — | — |
| Clinton County | 80,432 | ▲ 14.2% | 23 MW | — | — | 1 |
| Genesee County | 401,093 | ▼ 0.7% | 117 MW | — | 3 | — |
| Gratiot County | 41,190 | ▼ 3.3% | 1,124 MW | 50 MW | — | — |
| Ingham County | 289,709 | ▲ 1.4% | 276 MW | 15 MW | — | — |
| Livingston County | 197,315 | ▲ 2.0% | 14 MW | — | — | 1 |
| Saginaw County | 187,688 | ▼ 4.2% | 9 MW | 120 MW | — | — |
More of Michigan
Shiawassee County, answered from the record
Who provides electricity in Shiawassee County, Michigan?
2 utilities have service territory in Shiawassee County in the EIA-861 2024 report: DTE Electric Company, Consumers Energy Co - (MI). The largest, DTE Electric Company, charged residential customers 20.13¢/kWh on average in 2024.
What county is Owosso, MI in?
Owosso is in Shiawassee County, Michigan. About 14,437 people live there (2025 Census estimate).
What power plants are in Shiawassee County?
7 operating plants with 287 MW of capacity. The largest is Assembly Solar II LLC (110 MW, solar).
Are there data centers in Shiawassee County?
The SAVRN Data Center Map has no data center in Shiawassee County. The nearest activity on record is next door in Genesee County.
Is Shiawassee County adding jobs?
Employers counted 15,490 jobs in 2025 against 15,674 in 2019 (-1.2%, BLS QCEW). Construction went from 658 to 822.
Does Shiawassee County have a data center moratorium?
No county-level measure is on record for Shiawassee County. Michigan has 91 local measures statewide, listed on the state page.