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Datacenter Sites in McLean County, Illinois

McLean County has 25 scored datacenter candidate sites averaging 56.4/100 DC Readiness, with a catalogued aggregate of 4,700 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.

At a glance

McLean County, Illinois has 25 scored datacenter candidate sites averaging 56.4/100 DC Readiness, roughly in line with the Illinois average of 53.6. It ranks 32nd of 101 Illinois counties by number of sites and 16th by average score. The top-scoring site is SOUTH BLOOMINGTON at 63.0/100.

25
Candidate sites
56.4/100
Avg DC Readiness
4,700 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
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≥ 7560–7540–60≤ 40
Top 25 in McLean County

Site-selection context for McLean County

Yessales_tax_exemption
Datacenter tax incentive
10.59¢/kWh
Commercial electricity
5.41¢/kWh
Industrial electricity
11
Fiber providers
Low
Water stress
$7,074
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 McLean County compare with other counties in Illinois?

By number of scored sites, McLean County ranks 32nd of the 101 Illinois counties with a county page, holding 0.7% of the state's 3,641 sites. Its average DC Readiness of 56.4/100 ranks 16th in the state and is roughly in line with the national average of 53.0. Nationally it has the 1462nd-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 17 score 55 or higher.

What types of datacenter sites are in McLean County?

Substation-Adjacent sites are the most common (15, 60% of the county's inventory), followed by former mine (6) and greenfield (3). 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 McLean County?

Industrial electricity averages 5.41¢/kWh and commercial 10.59¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (35). WRI water stress is low. 11 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 $7,074 an acre.

By site type

Top datacenter sites in McLean County

Top datacenter sites in McLean County
SiteTypeVoltageCapacityQueue waitScore
SOUTH BLOOMINGTONSubstation-Adjacent345 kV600 MW4.8 yrs63.0
UNKNOWN122081Substation-Adjacent345 kV600 MW4.8 yrs63.0
BLUE MOUNDSubstation-Adjacent345 kV600 MW4.8 yrs62.9
BROKAWSubstation-Adjacent345 kV600 MW4.8 yrs62.9
UNKNOWN122084Substation-Adjacent345 kV600 MW4.8 yrs62.9
OZ McLeanGreenfield——4.8 yrs60.1
MCLEAN WIND FARM STEP-UP TRANSFORMERSubstation-Adjacent138 kV100 MW4.8 yrs57.8
TAP138270Substation-Adjacent138 kV100 MW4.8 yrs57.2
UNKNOWN123042Substation-Adjacent138 kV100 MW4.8 yrs57.2
UNKNOWN123152Substation-Adjacent138 kV100 MW4.8 yrs57.1
UNKNOWN123041Substation-Adjacent138 kV100 MW4.8 yrs57.1
UNKNOWN123124Substation-Adjacent138 kV100 MW4.8 yrs57.1
TAP138283Substation-Adjacent138 kV100 MW4.8 yrs57.1
UNKNOWN123043Substation-Adjacent138 kV100 MW4.8 yrs57.1
TWIN GROVE - APOLLO ACHARESSubstation-Adjacent138 kV100 MW4.8 yrs57.0
TAP138271Substation-Adjacent138 kV100 MW4.8 yrs57.0
Greenfield (BROKAW - LANESVILLE)Greenfield345 kV600 MW7.6 yrs55.3
Greenfield (UNKNOWN123144 - TAP138283)Greenfield138 kV100 MW4.8 yrs51.4
Mine SiteFormer Mine——4.8 yrs51.3
BLOOMINGTON-NORMAL AIRPORTFederal Excess——4.8 yrs51.1
Mine SiteFormer Mine——4.8 yrs50.9
Mine SiteFormer Mine——4.8 yrs50.9
Mine SiteFormer Mine——4.8 yrs50.9
Mine SiteFormer Mine——4.8 yrs50.8
Mine SiteFormer Mine——4.8 yrs50.7

Every scored site in McLean County

All 25 sites, best first.

McLean County datacenter FAQ

How many datacenter sites are in McLean County?

25 scored datacenter candidate sites, averaging 56.4/100 DC Readiness. That is the 32nd-most of 101 Illinois counties with five or more sites.

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

SOUTH BLOOMINGTON scores 63.0/100 DC Readiness, the highest of the 25 scored sites in McLean County (a substation-adjacent site).

Does McLean 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 McLean County?

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

What are industrial electricity rates in McLean County?

Average industrial electricity is 5.41¢/kWh and commercial is 10.59¢/kWh in McLean 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 McLean County, Illinois”, https://gridcensus.com/datacenter-sites/illinois/mclean-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 McLean 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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