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Datacenter Sites in Rock Island County, Illinois

Rock Island County has 68 scored datacenter candidate sites averaging 58.0/100 DC Readiness, with a catalogued aggregate of 3,600 MW. FEMA rates local natural-hazard risk as "Relatively High". The county has a datacenter tax incentive on record.

At a glance

Rock Island County, Illinois has 68 scored datacenter candidate sites averaging 58.0/100 DC Readiness, roughly in line with the Illinois average of 53.6. It ranks 12th of 101 Illinois counties by number of sites and 5th by average score. The top-scoring site is Substation-Adjacent site · 943840de at 67.3/100.

68
Candidate sites
58.0/100
Avg DC Readiness
3,600 MW
Catalogued capacity
theoretical aggregate
Relatively High
Hazard rating
◆ Loading map…
≥ 7560–7540–60≤ 40
Top 25 in Rock Island County

Site-selection context for Rock Island County

Yessales_tax_exemption
Datacenter tax incentive
5.51¢/kWh
Commercial electricity
3.55¢/kWh
Industrial electricity
12
Fiber providers
Low
Water stress
$9,125
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 Rock Island County compare with other counties in Illinois?

By number of scored sites, Rock Island County ranks 12th of the 101 Illinois counties with a county page, holding 1.9% of the state's 3,641 sites. Its average DC Readiness of 58.0/100 ranks 5th in the state and is roughly in line with the national average of 53.0. Nationally it has the 543rd-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 66 score 55 or higher.

What types of datacenter sites are in Rock Island County?

Substation-Adjacent sites are the most common (30, 44% of the county's inventory), followed by industrial (29) and federal excess (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 Rock Island County?

Industrial electricity averages 3.55¢/kWh and commercial 5.51¢/kWh. FEMA's National Risk Index rates the county "Relatively High" (35). WRI water stress is low. 12 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 $9,125 an acre.

By site type

Top datacenter sites in Rock Island County

Top datacenter sites in Rock Island County
SiteTypeVoltageCapacityQueue waitScore
UNKNOWN131605Substation-Adjacent345 kV600 MW4.3 yrs67.3
SUB 39Substation-Adjacent345 kV600 MW4.8 yrs67.2
OAK GROVESubstation-Adjacent345 kV600 MW4.8 yrs66.6
UNKNOWN132674Substation-Adjacent161 kV100 MW4.3 yrs64.7
OZ Rock IslandGreenfield——4.8 yrs64.4
UNKNOWN132671Substation-Adjacent161 kV100 MW4.3 yrs63.5
UNKNOWN137695Substation-Adjacent161 kV100 MW4.3 yrs63.4
EC Coal Rock Island CountyGreenfield——4.8 yrs63.0
UNKNOWN132669Substation-Adjacent161 kV100 MW4.3 yrs62.5
UNKNOWN131606Substation-Adjacent161 kV100 MW4.3 yrs62.2
UNKNOWN121968Substation-Adjacent161 kV100 MW4.8 yrs62.0
UNKNOWN121970Substation-Adjacent161 kV100 MW4.8 yrs61.9
UNKNOWN122004Substation-Adjacent161 kV100 MW4.8 yrs61.3
UNKNOWN132670Substation-Adjacent69 kV50 MW4.3 yrs60.7
UNKNOWN122000Substation-Adjacent161 kV100 MW4.8 yrs60.7
UNKNOWN121966Substation-Adjacent69 kV50 MW4.8 yrs60.1
UNKNOWN121956Substation-Adjacent69 kV50 MW4.8 yrs59.3
UNKNOWN121958Substation-Adjacent69 kV50 MW4.8 yrs59.3
UNKNOWN124276Substation-Adjacent69 kV50 MW4.8 yrs59.2
UNKNOWN121960Substation-Adjacent69 kV50 MW4.8 yrs59.2
UNKNOWN121961Substation-Adjacent69 kV50 MW4.8 yrs59.2
UNKNOWN121965Substation-Adjacent69 kV50 MW4.8 yrs59.0
UNKNOWN121962Substation-Adjacent69 kV50 MW4.8 yrs59.0
UNKNOWN121959Substation-Adjacent69 kV50 MW4.8 yrs59.0
TAP137643Substation-Adjacent69 kV50 MW4.8 yrs58.9

Every scored site in Rock Island County

All 68 sites, best first.

Rock Island County datacenter FAQ

How many datacenter sites are in Rock Island County?

68 scored datacenter candidate sites, averaging 58.0/100 DC Readiness. That is the 12th-most of 101 Illinois counties with five or more sites.

What is the highest-scoring datacenter site in Rock Island County?

Substation-Adjacent site · 943840de scores 67.3/100 DC Readiness, the highest of the 68 scored sites in Rock Island County (a substation-adjacent site).

Does Rock Island 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 Rock Island County?

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

What are industrial electricity rates in Rock Island County?

Average industrial electricity is 3.55¢/kWh and commercial is 5.51¢/kWh in Rock Island 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 13, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Datacenter candidate sites in Rock Island County, Illinois”, https://gridcensus.com/datacenter-sites/illinois/rock-island-county (data as of November 13, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for Rock Island 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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