Substation-Adjacent site at 42.494, -89.070
Substation-AdjacentWinnebago County, Illinois · PJM
At a glance
Substation-Adjacent site at 42.494, -89.070 is a substation-adjacent datacenter candidate site in Winnebago County, Illinois, scoring 54.7/100 DC Readiness — 30th of 193 scored sites in the county. Its nearest substation is TAP173318 (0 mi, 69 kV). It sits in the PJM grid region and the COMMONWEALTH EDISON CO service territory, where interconnection has averaged 4.8 years from request to operation. GridCensus catalogs 50 MW of candidate capacity here.
Power & interconnection
Speed to power
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Risk & environment
Location context
Regulatory climate
New-DC state tax exemptions suspended for 2 years (from Jul 2026).
Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.
Site location
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How does Substation-Adjacent site at 42.494, -89.070 compare with other sites in Winnebago County?
Substation-Adjacent site at 42.494, -89.070 ranks 30th of 193 scored candidate sites in Winnebago County. Its 54.7/100 is roughly in line with the county average of 52.5. It is roughly in line with the Illinois average of 54.3 and roughly in line with the national average of 53.2.
Against the Illinois average, its strongest sub-score is power availability (46 vs 37) and its weakest is fiber connectivity (65 vs 71). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is Substation-Adjacent site at 42.494, -89.070 to power, fiber and other datacenters?
The nearest mapped substation, TAP173318, is about 0 miles away and operates at 69 kV. The nearest located transmission bottleneck is NILES-EVERGFE B 138 KV (PJM), 74 miles away. For connectivity, the nearest internet exchange facility is Rochelle Technology Center at 38.3 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Central Office, 29 miles away.
What are the flood, water and hazard risks at Substation-Adjacent site at 42.494, -89.070?
At the county level, FEMA's National Risk Index rates Winnebago County "Relatively High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Winnebago County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| TAP137909 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 63.5 |
| UNKNOWN124165 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 63.3 |
| TAP136942 | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 63.1 |
| Rockford Community Solar | Brownfield | — | 3 MW | 4.8 yrs | 63.0 |
| WEMPLETOWN | Substation-Adjacent | 345 kV | 600 MW | 4.8 yrs | 62.7 |
| OZ Winnebago | Greenfield | — | — | 4.8 yrs | 60.9 |
| OZ Winnebago | Greenfield | — | — | 4.8 yrs | 60.9 |
| EC Near Sabrooke | Greenfield | — | — | 4.8 yrs | 60.8 |
Substation-Adjacent site at 42.494, -89.070: common questions
What is the DC Readiness score of Substation-Adjacent site at 42.494, -89.070?
Substation-Adjacent site at 42.494, -89.070 scores 54.7/100 on the GridCensus DC Readiness scale, rated fair. It ranks 30th of 193 scored sites in Winnebago County. The Winnebago County average is 52.5 and the Illinois average is 54.3.
What is the nearest substation to Substation-Adjacent site at 42.494, -89.070?
The nearest mapped substation is TAP173318, about 0 miles away, at 69 kV. GridCensus catalogs 50 MW of candidate capacity for the site.
Which electric utility serves Substation-Adjacent site at 42.494, -89.070?
COMMONWEALTH EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is EXELON CORP.
What grid region is Substation-Adjacent site at 42.494, -89.070 in?
Substation-Adjacent site at 42.494, -89.070 is in the PJM region. Projects interconnecting there have averaged a 4.8-year wait from queue request to operation.
How far is Substation-Adjacent site at 42.494, -89.070 from an internet exchange?
The nearest internet exchange facility is Rochelle Technology Center, about 38.3 miles away; 16 fiber providers report service at the location.
Related pages
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 October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Substation-Adjacent site at 42.494, -89.070, Winnebago County, IL”, https://gridcensus.com/datacenter-sites/illinois/winnebago-county/tap173318-8f7c1955 (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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Every site and score for Substation-Adjacent site at 42.494, -89.070, Winnebago County 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.