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County of DuPage (IL)

Illinois Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2020
Fire Code Version2015 Building Code
SolarAPP+ StatusTargeted
Wet Stamps RequiredDigital Structural,Digital Electrical
Fire Setback Enforced1

Codes

NEC Code Version
2020
Fire Code Version
2015 Building Code
Code List

DUPAGE COUNTY BUILDING CODE

2021 INTERNATIONAL CODE COUNCIL CODES

2021 ILLINOIS ENERGY CONSERVATION CODE

2021 INTERNATIONAL BUILDING CODE

2021 INTERNATIONAL MECHANICAL CODE

2021 INTERNATIONAL PROPERTY MAINTENANCE CODE

2021 INTERNATIONAL FUEL GAS CODE

2021 INTERNATIONAL FIRE CODE

2021 INTERNATIONAL EXISTING STRUCTURES CODE

2021 INTERNATIONAL SWIMMING POOL AND SPA CODE

2020 NATIONAL ELECTRIC CODE

IEBC Accepted
1
ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status
Targeted
Any SolarAPP+ Restrictions
1
SolarAPP+ Restrictions
MPU,Derate
How Many Plansets Required
2
Revision Required
1
Rough Inspection
None
New Planset Required For Module Swap
0

Stamps

Ee Stamp Required On SLD
Yes
Wet Stamps Required
Digital Structural,Digital Electrical
Structural Calculations Required
Yes
Stamp Location On Plans
Unspecified
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
1
Setback Notes

Standard

Structural & loads

Wind Speed
115
Wind Notes

Exposure Category B

Snow Load
30
Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Minimum Ground On Roof
#10

Electrical

Electrical Load Calcs Required
Derates
Allowed POI
Meter Adapter,Load Side Taps,Line Side Taps,PV Breaker
Panel Schedule Required
Partial Home Backup
Temperature Rating
90
De Rating Ampacity
0.91
BOS Restrictions

If panel is not 200A, AHJ will force 200A MPU for passing inspection.

Battery / ESS

Unique Battery Placards Needed
0
ESS Notes


Separate ESS Disconnect Required
ESS Disconnect
ESS Elevation Detail Required
No

Plan set

Plan Set Requirements


Electrical Diagram

Standard

Electrical Diagram Notes

Battery [GATEWAYS AND TRANSFER SWITCHES NOT TO BE USED AS A PRIMARY MEANS OF DISCONNECT] 

Custom Placards Required
0
Non Standard Revision Requirements
  • All revisions /changes must be Clouded in _BLACK _ink not red

Ground mount

Ground Mount Fencing Required
Mesh/Scrim
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the County of DuPage (IL) building department before you rely on this, and treat it as a research head start, not a ruling. Getting quotes? Run them through the quote checker first.