Jobs · IL

What does the Illinois study mean by “121,000 jobs”?

Data Centers in Illinois: Economic Impacts and Key Policy Considerations
Illinois Economic Policy Institute and Project for Middle Class Renewal, University of Illinois at Urbana-Champaign · 1 October 2026

Question reviewed

Answer

Supported Supported refers to this explanation of the report’s figures, not proof that the forecast jobs will happen. How verdicts work →

How it was framed
A question DataCenterData examined; no one is quoted.
What the evidence establishes
  • Construction-related employment112,950 cumulative job-years across 2026–2035.
  • Operations-related employment7,998 annual jobs in 2035, including 2,819 permanent positions.

One job-year means a job supported for one year. One person working for ten years can account for ten job-years.

Biggest limitation
These are forecasts. This review does not establish delivered jobs, distinct workers, or whether the economic model is accurate.
Checked
12 October 2026 · Next review: A corrected or revised report, or observed employment and payroll data for the projected buildout and operations.

Evidence

Statement checked The Illinois study’s roughly 121,000 jobs figure combines cumulative construction job-years with annual operations-related jobs.

How the report defines these figures

The October 1, 2026 study’s executive summary reports roughly 121,000 total jobs. Figure 8 (printed page 15) separates 112,950 construction-related job-years over 2026–2035 from 7,998 annual operations-related jobs in 2035, including 2,819 permanent operations positions. Its footnote explicitly defines the construction estimates as cumulative job-years and shows 11,295 jobs per year during the buildout. One job-year means a job supported for one year, not necessarily a different person. The two headline components sum arithmetically to 120,948, but adding unlike time units does not create a comparable workforce count. These are the authors’ modeled projections; this review checks their published figures and units, not the economic model or observed employment.

Sources

  1. Data Centers in Illinois: Economic Impacts and Key Policy Considerations → Institution

    Exact location Cover date October 1, 2026; executive summary (printed page i); Figure 8 and its cumulative job-years footnote (printed page 15); adjacent operations discussion (printed pages 15–16).

    What it supports The report separates cumulative construction job-years over 2026–2035 from annual operations-related employment in 2035 and the permanent operations subset. These are projected employment measures with different time units.

    Publication date · Accessed

Review details

Scope

Unit
Construction job-years and annual operations-related jobs
Geography
Projected Illinois data center investments
Period
Construction: 2026–2035; operations: annual in 2035
Confidence
medium — The institutional report’s Figure 8, footnote and adjacent discussion explicitly define the units. Confidence concerns interpretation of the document, not accuracy of its economic forecasts.
Kind
Question reviewed

Full limitation

Whether these projected jobs are delivered, the number of distinct construction workers, and independent validation of the economic model. The study’s employment forecast is not a measured payroll count.

Conflicting evidence

None recorded when this claim was checked. That records what we logged, not a finding that no conflicting record exists.

Chronology

  1. Published — Data Centers in Illinois: Economic Impacts and Key Policy Considerations
  2. Source retrieved
  3. Sources re-read (software-assisted second check, not an outside audit)
  4. Checked by DataCenterData
  5. Date not established Next review: A corrected or revised report, or observed employment and payroll data for the projected buildout and operations.

Corrections and history

No corrections or wording changes recorded for this claim.

Data

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