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Free Builder Resource

WSEC Compliance Checklist for Builders

A field-ready, five-section checklist for taking a new-construction solar scope from plan set through final utility approval under the 2021 Washington State Energy Code. Download the PDF and keep it on the job site.

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What’s Inside

Every Step, From Plan Set to Closeout

This checklist condenses everything we cover with builders across a typical WSEC solar scope into one printable page. So, instead of tracking credits, permitting, interconnection, and rough-in sequencing separately, your team gets one reference that mirrors how the work actually happens on site.

Pre-construction plan set and WSEC credit sizing
Permitting and AHJ coordination steps
Utility interconnection paperwork and timing
Rough-in and trade scheduling checkpoints
Trim, final inspection, and homeowner closeout
New-construction home under framing surrounded by mature trees in the Pacific Northwest

Checklist Preview

A Sample of What’s on the Checklist

1. Pre-Construction & Plan Set

Confirm additional WSEC credits still needed per Table R406.3
Confirm roof orientation and shading for credit sizing

3. Utility Interconnection

Identify serving utility: PSE, Seattle City Light, or SnoPUD
File net metering agreement before certificate of occupancy

The full PDF includes all five sections and seventeen checklist items, ready to print for the job site.

Get the Free Checklist

Tell us a bit about your projects and a download link for the full PDF checklist appears right after you submit.

By submitting this form, you agree to receive email and phone communications from Solphos. Please note that all services are subject to schedule availability.

Want the full detail behind each checklist item? Our guides go deeper on WSEC energy credits, permitting and AHJ coordination, utility interconnection, and rough-in and trim sequencing. Or browse the full Builder Solar FAQ for quick answers to common questions.

Solar installation technician at dusk, Western Washington WSEC solar compliance

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Send your plans and we will come back with a sized system, credit count, and fixed price: no redesign required.

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