City and County of Denver (CO)

Codes

NEC Code Version

2023

Fire Code Version

2018 Building Code

Code List

2022 DENVER BUILDING AND FIRE CODE

2022 DENVER ENERGY CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

2021 INTERNATIONAL RESIDENTIAL CODE

2023 NATIONAL ELECTRIC CODE

2017 ANSI

ASCE Code Specification

ASCE 7-16

SolarAPP+ & submittal

SolarAPP+ Status

Adopted

Any SolarAPP+ Restrictions

1

SolarAPP+ Restriction Notes

Project size limit of 10 kW, trenching, existing systems, historical district, ESS, MSP's above 200A, Tilt Mounts, Ground Mounts

SolarAPP+ Restrictions

Existing Systems,Trenching,Historic District,Other

How Many Plansets Required

1

Revision Required

1

Rough Inspection

None

New Planset Required For Module Swap

1

Stamps

Ee Stamp Required On SLD

Yes - 10kW+,Yes - Battery

Wet Stamps Required

Digital Structural,Digital Electrical

Structural Calculations Required

Yes

Ee Stamp Notes

Requestor Instructions:

• Two separate sets of stamped PV Plans are required - One set stamped by Structural Engineer and one set stamped by Electrical Engineer. 
• Multi-Dwelling Units (Duplex, Condo, Townhome, Etc.) need EE stamps.
• Stamps must be PDF valid, verifiable but NOT locked.

PE Instructions:

For 10 kW+ systems please adhere to the following AHJ guidelines:

 2.) Another complete set of the PV Plans must be electronically stamped & signed by the Structural Engineer only.

• AHJ will not accept plans with both Structural Engineer & Electrical Engineer stamps on the same plan-set. 
• AHJ will not accept plans if stamps are not digitally verifiable. 
• Digitally Verified Signature required.

Stamp Location On Plans

Unspecified

Date On Stamps

Date Plans are Stamped

Fire setbacks

Fire Setback Enforced

1

Setback Notes

Standard

Structural & loads

Wind Speed

125

Wind Notes

Exposure Category C

Snow Load

40

Snow Load Notes

40psf

Reducible Snow Load Allowed

1

Max Attachment Spacing

96

Structural Notes

PE Instructions:

• Structural and Electrical stamps must be on separate plansets
• All engineer stamps must state that they have been digitally signed but cannot be locked by the Engineer and still need to be verifiable.
• Exposure Category C, 100 MPH Nominal/129corresponding PV pages, PE Letter & Calcs. WS: 115mph MPH Vultimate. SL: 40psf
• Structural calcs and PE letter should reference the IRC/DBCA and not the IBC. The letter from the licensed structural Engineer shall include the structural Engineer’s electronically verifiable digital signature, as well as an image of the structural Engineer’s seal and signature. The digital signature shall be in accordance with the tutorial at: https://www.denvergov.org/content/dam/denvergov/Portals/696/documents/Other_forms_and_guides/Electronic_Signatures.pdf

Digitally Verified Signature required.

Minimum Ground On Roof

#6

Electrical

AC Disconnect Required

Yes

Electrical Load Calcs Required

Derates

Allowed POI

Line Side Taps,PV Breaker,Load Side Taps,Meter Adapter

Panel Schedule Required

Partial Home Backup

Temperature Rating

90

De Rating Ampacity

0.96

Battery / ESS

Unique Battery Placards Needed

0

ESS Notes

Standard

Separate ESS Disconnect Required

ESS Disconnect

ESS Elevation Detail Required

No

Plan set

Plan Set Requirements

Jobs 10kW DC and up do NOT qualify for SolarApp

Planset requirements:

• Please remove pre-stamped PZSE Certification Letter from plansets for this AHJ.
• Remove any engineer/product approval seals on the manufacturer spec sheets.
• For tilt mounted systems ON FLAT ROOFS please include height of building and height of tilted array, and the distance between the panels and edge of roof.
• Unirac engineering certification letter must be submitted separately, electronically signed and stamped with a verifiable digital signature

For projects that fall within Historical District (rare) project MUST comply with the following requirements. "Historical & Landmark documentation"

Roof Plan

Electrical Diagram

• Include Module & Inverter name plate values on the TLD.
• On SLD for any new (N) main service panel, please provide surge protective device as required per NEC 230.67.
• See diagram in electrical sample field above.

Custom Placards Required

0

Non Standard Revision Requirements

For revised plans that include a the installer generated Planset Revision Letter:

1. Please separate the first page "the installer Planset Revision Letter" from the revised Electrical plans. If the the installer generated planset revision letter is prepared by a design professional it should be digitally signed, stamped and electronically verifiable.

2. Please separate the first page "the installer Planset Revision Letter" from the revised Structural plans. If the the installer generated planset revision letter is prepared by a design professional it should be digitally signed, stamped and electronically verifiable.

Ground mount

Ground Mount Fencing Required

Yes

Ground Mount Notes

• Soil Class: Clay
• Indicate height, material and location of fence
• Denver Zoning Code

Ground Mount Requires Soil Sample

Soil Study

Setback Back Yard

5