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Datacenter Sites in Stephenson County, Illinois

Stephenson County has 127 scored datacenter candidate sites averaging 47.8/100 DC Readiness, with a catalogued aggregate of 600 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.

At a glance

Stephenson County, Illinois has 127 scored datacenter candidate sites averaging 47.8/100 DC Readiness, about 11% below the Illinois average of 53.6. It ranks 3rd of 101 Illinois counties by number of sites and 101st by average score. The top-scoring site is OZ Stephenson at 54.1/100.

127
Candidate sites
47.8/100
Avg DC Readiness
600 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Stephenson County

Site-selection context for Stephenson County

Yessales_tax_exemption
Datacenter tax incentive
9.23¢/kWh
Commercial electricity
5.51¢/kWh
Industrial electricity
8
Fiber providers
Low
Water stress
$9,230
Land price / acre
1,100
Cooling degree days
5,600
Heating degree days
52°F
Mean annual temp

Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.

How does Stephenson County compare with other counties in Illinois?

By number of scored sites, Stephenson County ranks 3rd of the 101 Illinois counties with a county page, holding 3.5% of the state's 3,641 sites. Its average DC Readiness of 47.8/100 ranks 101st in the state and is roughly in line with the national average of 53.0. Nationally it has the 230th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 0 score 55 or higher.

What types of datacenter sites are in Stephenson County?

Industrial sites are the most common (114, 90% of the county's inventory), followed by substation-adjacent (6) and former mine (5). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.

What are power cost, hazard, water and fiber conditions in Stephenson County?

Industrial electricity averages 5.51¢/kWh and commercial 9.23¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (35). WRI water stress is low. 8 fiber providers report service in the county. The climate runs 1,100 cooling degree days a year with a mean temperature of 52°F. Land is valued around $9,230 an acre.

By site type

Top datacenter sites in Stephenson County

Top datacenter sites in Stephenson County
SiteTypeVoltageCapacityQueue waitScore
OZ StephensonGreenfield——4.8 yrs54.1
EC FFE Stephenson CountyGreenfield——4.8 yrs54.0
TAP137878Substation-Adjacent138 kV100 MW4.8 yrs53.7
TAP137880Substation-Adjacent138 kV100 MW4.8 yrs53.7
UNKNOWN124271Substation-Adjacent138 kV100 MW4.8 yrs53.7
UNKNOWN121924Substation-Adjacent138 kV100 MW4.8 yrs53.7
UNKNOWN124269Substation-Adjacent138 kV100 MW4.8 yrs53.6
TAP137882Substation-Adjacent138 kV100 MW4.8 yrs52.8
Eastside Property-1023 E. Album St.Industrial——4.8 yrs47.4
101 South Mary AvenueIndustrial——4.8 yrs47.4
231 East Stephenson St & 11 South Liberty AvenueIndustrial——4.8 yrs47.4
CMC Heartland PropertyIndustrial——4.8 yrs47.4
701-703 South Carroll AvenueIndustrial——4.8 yrs47.4
Rawleigh Corridor Property-216 S. Liberty AveIndustrial——4.8 yrs47.4
Rawleigh Corridor Property-116 S. Adams Ave.Industrial——4.8 yrs47.4
Former KST/ComEd PropertyIndustrial——4.8 yrs47.4
Eastside Property-107 N. HendersonIndustrial——4.8 yrs47.4
Rawleigh Corridor Property-102 E. Spring St.Industrial——4.8 yrs47.4
Former Eagle GroceryIndustrial——4.8 yrs47.4
Eastside Property-201 S. HancockIndustrial——4.8 yrs47.4
Rawleigh A & CIndustrial——4.8 yrs47.4
Mine SiteFormer Mine——4.8 yrs47.4
Eastside Property-150 S. LouisIndustrial——4.8 yrs47.4
Rawleigh Corridor Property-219-229 E. Spring St.Industrial——4.8 yrs47.4
Eastside Property-21 S. JohannaIndustrial——4.8 yrs47.4

Every scored site in Stephenson County

All 127 sites, best first.

Stephenson County datacenter FAQ

How many datacenter sites are in Stephenson County?

127 scored datacenter candidate sites, averaging 47.8/100 DC Readiness. That is the 3rd-most of 101 Illinois counties with five or more sites.

What is the highest-scoring datacenter site in Stephenson County?

OZ Stephenson scores 54.1/100 DC Readiness, the highest of the 127 scored sites in Stephenson County (a greenfield site).

Does Stephenson County offer datacenter tax incentives?

Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.

What is the natural-hazard risk in Stephenson County?

FEMA's National Risk Index rates Stephenson County as "Relatively High" (score 35).

What are industrial electricity rates in Stephenson County?

Average industrial electricity is 5.51¢/kWh and commercial is 9.23¢/kWh in Stephenson County.

More in Illinois

About this data

Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Stephenson County, Illinois”, https://gridcensus.com/datacenter-sites/illinois/stephenson-county (data as of November 12, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Stephenson County, Illinois is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.

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