EAST ROCKTON
Substation-AdjacentWinnebago County, Illinois · PJM
At a glance
EAST ROCKTON is a substation-adjacent datacenter candidate site in Winnebago County, Illinois, scoring 54.8/100 DC Readiness — 27th of 193 scored sites in the county. Its nearest substation is EAST ROCKTON (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
Site characteristics
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 EAST ROCKTON compare with other sites in Winnebago County?
EAST ROCKTON ranks 27th of 193 scored candidate sites in Winnebago County. Its 54.8/100 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 (66 vs 71). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is EAST ROCKTON to power, fiber and other datacenters?
The nearest mapped substation, EAST ROCKTON, is about 0 miles away and operates at 69 kV. The nearest located transmission bottleneck is NILES-EVERGFE B 138 KV (PJM), 70 miles away. For connectivity, the nearest internet exchange facility is Rochelle Technology Center at 35.6 miles. 16 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Central Office, 29.7 miles away.
What are the flood, water and hazard risks at EAST ROCKTON?
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 |
EAST ROCKTON: common questions
What is the DC Readiness score of EAST ROCKTON?
EAST ROCKTON scores 54.8/100 on the GridCensus DC Readiness scale, rated fair. It ranks 27th 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 EAST ROCKTON?
The nearest mapped substation is EAST ROCKTON, about 0 miles away, at 69 kV. GridCensus catalogs 50 MW of candidate capacity for the site.
Which electric utility serves EAST ROCKTON?
COMMONWEALTH EDISON CO (investor owned) holds the retail service territory that contains the site; its holding company is EXELON CORP.
What grid region is EAST ROCKTON in?
EAST ROCKTON is in the PJM region. Projects interconnecting there have averaged a 4.8-year wait from queue request to operation.
How far is EAST ROCKTON from an internet exchange?
The nearest internet exchange facility is Rochelle Technology Center, about 35.6 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, “EAST ROCKTON, Winnebago County, IL”, https://gridcensus.com/datacenter-sites/illinois/winnebago-county/east-rockton-a1d8f261 (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 EAST ROCKTON, 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.