Skip to content
Gridcensus

Joliet 9

Brownfield

Joliet, Will, Illinois · Midwest Generations EME LLC

Legacy capacity
508
MW

Joliet 9 is a natural gas plant in Joliet, Will, Illinois, retired 2023-06-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 508 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.

Former use & capacity

Former usenatural gas plant
Site typeretired_plant
Existing capacity508 MW
Retirement date2023-06-01
EIA plant ID#874

Grid hookup & remediation

Nearest substation0.0 mi
Operator address1601 Patterson Rd, Joliet, IL, 60436
Why this site is datacenter-attractive: a natural gas plant of this scale leaves behind a high-capacity grid interconnection that a new load can re-use, frequently shaving years off the interconnection queue. Retired-plant sites also tend to be already zoned for heavy industrial use with established road, rail, and water infrastructure.

Site conditions & market — Will County

County-level intelligence for this site's location — the power economics, water, hazard, connectivity, and workforce a developer screens before ever visiting. Assembled from FEMA NRI, BLS QCEW, FCC BDC, USGS water-use, and EIA.

Market & workforce

Total employment (laborshed)230,864
IT / tech employment86
Construction employment14,991
Land value$10,259/acre
Datacenter tax incentivesales_tax_exemption

Power economics & interconnection

Commercial power rate8.86¢/kWh
Industrial power rate5.29¢/kWh
Load growth (FERC-714)0.7%

Water & cooling

Water stressLow
Public water supply35.1 MGD
Industrial water use31.9 MGD
Cooling degree days1,100
Mean annual temp52°F

Hazard, flood & connectivity

FEMA risk index35.0 · Relatively High
Fiber providers13 · 27% served

County-level context — address-level utility offerings and flood zoning vary within the county. Confirm site-specific service with the utility and a Phase I ESA.

Nearby brownfield & retired-generation sites

A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near Joliet 9 — the environmental neighborhood, ranked by legacy grid capacity.

SiteFormer useLegacy MWDistanceCleanup status
Collinsnatural gas plant2,65017.6 mi—
Joliet 29natural gas plant1,3200.5 mi—
Will Countycoal plant1,26910.1 mi—
Crawfordcoal plant80530.8 mi—
Electric Junctionnatural gas plant30423.6 mi—
Lombardoil plant13327.6 mi—
Lockport Powerhouseformer hydro site165.6 mi—
Prairie View ILnatural gas plant510.4 mi—

Derived from GridCensus's retired-generator & EPA brownfield dataset. Not a substitute for an ASTM E1527 Phase I environmental radius report.

Get alerts

Track Joliet 9

Get an email when its DC-readiness score, available capacity, or interconnection-queue status changes.

No spam. Just the alerts you asked for.

Nearby datacenter candidate sites

Scored candidate sites near Joliet 9, ranked by DC Readiness.

Candidate sites near Joliet 9
SiteTypeStateCountyVoltageCapacityQueue waitScore
UNKNOWN122269Substation-AdjacentILCook County345 kV600 MW3.8 yrs71.4
PLANO (765 KV)Substation-AdjacentILKendall County765 kV1,000 MW3.8 yrs68.9
JOLIETSubstation-AdjacentILWill County345 kV600 MW3.8 yrs67.7
UNKNOWN124699Substation-AdjacentILCook County345 kV600 MW3.8 yrs67.1
ELECTRIC LIGHT 345 KVSubstation-AdjacentILDuPage County345 kV600 MW3.8 yrs67.1
LISLESubstation-AdjacentILDuPage County345 kV600 MW3.8 yrs67.0
TAP138253Substation-AdjacentILDuPage County345 kV600 MW3.8 yrs67.0
UNKNOWN122226Substation-AdjacentILDuPage County345 kV600 MW3.8 yrs67.0

Nearby internet exchanges

See all datacenter sites in Illinois →

Dataset updated . Screening estimates derived from public data sources.

Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.

Go deeper than the public screen

This page shows a public slice of the GridCensus dataset for Joliet 9, Joliet, Will, Illinois. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.