MARION S

Substation-Adjacent

Johnson County, Illinois · PJM

DC Readiness
62.7
Good / 100

MARION S is a substation-adjacent datacenter candidate site in Johnson County, Illinois, interconnecting through PJM. It screens at 62.7/100 DC Readiness with a catalogued 100 MW of candidate capacity and a 4.6 yrs average interconnection-queue wait.

Power & interconnection

Nearest substationMARION S
Substation distance0.0 mi
Substation voltage161 kV
Available capacity100 MW
LMP zonePJM_COMED
Wholesale LMP$33.95/MWh
Utility commercial rate0.10¢/kWh

Speed to power

ISO / RTO regionPJM
Queue depth265
Avg queue wait4.6 yrs
Recent queue wait2.9 yrs
Completion rate21%
Withdrawal rate79%

Connectivity

Nearest IXPQuad State Internet METRO1 Colocation
IXP distance29.3 mi
Fiber providers4
Fiber coverage59.1%
Nearest cloud providerAzure
Nearest cloud regionnorthcentralus
Cloud region distance307.4 mi

Site characteristics

Site typeSubstation-Adjacent
Parcel ownerAMEREN ILLINOIS COMPANY
Land owner typeprivate
Buildability75.0/100
Land cover (NLCD)Pasture/Hay

Risk & environment

Flood zoneZone X
Water stress (WRI)0.60
Wetlands (NWI)Clear
Critical habitatClear
Superfund nearbyClear
Hazard sub-score65/100
Construction cost index66.8 (avg 100)

Location context

Nearest datacenterQuad State Internet METRO1 Colocation
DC distance29.3 mi
Nearest rail2.2 mi
Nearest gas pipeline2.2 mi
Nearest fiber route266.7 mi
County hazard (FEMA NRI)Relatively High (35)
DC tax incentiveYes (sales_tax_exemption)
Commercial electricity10.38¢/kWh
Industrial electricity5.29¢/kWh
Cooling degree days1,100
Heating degree days5,600
Land price / acre$4,327
See all datacenter sites in Johnson County →

Incentive detail: Enterprise Zone sales tax exemption; High Impact Business designation for $12M+ DC investments.

Full DC Readiness breakdown

All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.

Power availability20%
60
Speed to power15%
44
Fiber connectivity12%
34
Energy cost10%
85
Water risk8%
90
Natural hazard8%
65
Buildability7%
75
Labor market4%
50
DC cluster4%
60
Land / acreage3%
48
Construction cost3%
94
Gas pipeline2%
93
Tax incentive2%
100
Climate / cooling2%
70

Nearby comparable sites

Other scored datacenter candidate sites in Johnson County, ranked by DC Readiness.

Sites near MARION S
SiteTypeVoltageCapacityQueue waitScore
JOPPASubstation-Adjacent230 kV300 MW4.6 yrs70.7
Greenfield (SHAWNEE - WEST FRANKFORT EAST)Greenfield345 kV600 MW4.6 yrs67.3
Greenfield (SHAWNEE - WEST FRANKFORT EAST)Greenfield345 kV600 MW4.6 yrs65.9
Greenfield (SHAWNEE - WEST FRANKFORT EAST)Greenfield345 kV600 MW4.6 yrs65.9
Greenfield (JOPPA - WEST FRANKFORT)Greenfield230 kV300 MW4.6 yrs63.1
OZ JohnsonGreenfield——4.6 yrs62.4
EC Coal Johnson CountyGreenfield——4.6 yrs61.2
EC FFE Johnson CountyGreenfield——4.6 yrs59.3

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.

Go deeper than the public screen

This page shows a public slice of the GridCensus dataset for MARION S, Johnson County. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.

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