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City of Twin Falls (ID)

Idaho Authority Having Jurisdiction Solar permitting requirements
NEC Code Version2017
SolarAPP+ StatusTargeted
Wet Stamps RequiredNone
Fire Setback Enforced0

Codes

NEC Code Version
2017
Code List

2018 International Residential Code, Parts I-VI and IX, appendices A, B and G (with State amendments). 2018 International Energy Conservation Code (with Idaho State amendments) 2017 National Electrical Code (with State amendments) 2017 Idaho State Plumbing Code AS ADOPTED BY CITY OF TWIN FALLS

ASCE Code Specification
ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status
Targeted
Any SolarAPP+ Restrictions
1
SolarAPP+ Restrictions
MPU,Derate
Revision Required
1
New Planset Required For Module Swap
0

Stamps

Ee Stamp Required On SLD
No
Wet Stamps Required
None
Structural Calculations Required
No
Stamp Location On Plans
Unspecified
Date On Stamps
Expiration Date

Fire setbacks

Fire Setback Enforced
0
Setback Notes

Standard

Structural & loads

Wind Speed
115
Wind Notes

Exposure Category C

Snow Load
15
Reducible Snow Load Allowed
1
Max Attachment Spacing
96
Structural Notes
If the roof load is >5 lbs/sqft installation instructions and engineering showing roof will support the load (building permits will be needed if changes to the roof are required)
Minimum Ground On Roof
#10

Electrical

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

Battery / ESS

Unique Battery Placards Needed
0
ESS Notes

Standard

Separate ESS Disconnect Required
ESS Disconnect
ESS Elevation Detail Required
No

Ground mount

Ground Mount Fencing Required
Mesh/Scrim
Compiled from public records, 2026. Requirements change with code cycles and local amendments. Verify with the City of Twin Falls (ID) 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.