Complete solar permit engineering drawings for every Delaware residential solar installer, EPC, and roofing company. Built to comply with NEC 2020 and engineered for first-pass AHJ approval — from Wilmington to every Delaware county.
Every Delaware solar permit plan set from our solar permit design team is a complete, submission-ready package. Your AHJ receives everything they need — no back-and-forth, no missing pages.
Project summary, designer credentials, adopted code (NEC 2020), applicable NEC articles, and all project identification required by Delaware AHJs.
Overhead aerial view showing property setbacks, main panel location, utility meter, Delaware fire code access pathways, and panel-to-inverter routing.
Precise panel array layout, roof pitch and material, compass orientation, structural attachment points, and fire setback clearances for Delaware.
Complete electrical schematic from PV source circuits through inverter to utility interconnection — fully compliant with NEC 2020 Article 690.
Per-phase wiring detail with conductor sizing, OCPD ratings, and grounding — required by many Delaware AHJs for battery systems and larger residential arrays.
Complete NEC 690.12 rapid shutdown documentation — system type, component locations, required labels — built for every Delaware fire inspector's checklist.
All NEC-required warning labels, AC/DC disconnect labels, rapid shutdown placards, and code signage for your specific Delaware installation configuration.
Manufacturer spec sheets for modules, inverter, optimizers, racking, and battery storage. Required by every Delaware AHJ and utility interconnection team.
Interconnection drawings formatted for Delmarva Power & Light (Exelon), Delaware Electric Cooperative, and all Delaware utilities — submit to AHJ and utility simultaneously without separate documentation.
Delaware adopts NEC 2020. Delmarva Power & Light has specific solar permit drawing requirements under Delaware's Renewable Energy Portfolio Standards. Delaware Electric Cooperative serves much of the rural state with its own interconnection documentation requirements.
All Delaware solar permit drawings must comply with NEC 2020 & Delaware Building Code. This includes NEC Article 690 (Solar PV Systems), Article 705 (Interconnected Power Production Sources), and NEC 690.12 (Rapid Shutdown).
Delaware has 3 counties each with their own solar permit documentation requirements. Key AHJs include Wilmington Building Dept, New Castle County Land Use, and Kent County Building Inspections — each with distinct submittal checklists.
Beyond AHJ submission, Delaware solar projects require utility interconnection drawings. Delmarva Power & Light (Exelon) and Delaware Electric Cooperative each have specific solar engineering drawing requirements.
Every Delaware plan set includes utility-ready interconnection documentation — no separate package needed.
Every Delaware residential solar permit drawing set must document NEC 690.12 rapid shutdown compliance. Missing or incomplete rapid shutdown documentation is the most common correction request from Delaware AHJs.
Our Delaware solar plan sets include complete, inspection-ready rapid shutdown documentation on every submission.
Delaware is the #38 solar market nationally for residential solar installations. With approximately 62 MW of residential solar installed in 2024 and average AHJ review times of 9 business days at Wilmington Building Dept, getting your permit documentation right on the first submission directly impacts project profitability. The Delmarva Power Renewable Net Metering is the primary state-level financial incentive driving installer activity in Delaware.
For Delaware solar installers, permit turnaround time is a direct cost. Every business day a permit sits in AHJ review is a day the project cannot be installed — and 9 days is the average at Wilmington Building Dept. Jurisdictions that receive complete, AHJ-ready plan sets on first submission consistently process permits faster than the average. An incomplete first submission at Wilmington Building Dept can add another 9 days or more to your project timeline, pushing installation and PTO out by weeks.
Our Delaware solar permit drawing service is purpose-built for this reality. Every plan set we produce for Delaware projects is prepared to Wilmington Building Dept's specific checklist — not a generic national template. That means our Delaware clients average first-pass approval rates well above the statewide average, and spend far less time chasing corrections, resubmitting paperwork, or explaining documentation to Delaware reviewers.
Newark, Delaware: Residential solar permit drawing package submitted to New Castle County Land Use. Our team prepared the complete plan set — cover sheet, site plan, roof layout, single-line diagram, three-line diagram, rapid shutdown documentation, and all NEC 2020 labels. AHJ approval received in 8 business days — first submission, no corrections requested.
Here's exactly what happens from the moment you order to the moment your Delaware permit is approved and your system is online.
Send us the Delaware address, roof photos, system specs, and equipment models — takes under 5 minutes.
Day 1Our Delaware design team builds your complete solar permit plan set to Delaware AHJ and code standards.
24–48 hoursYou receive the complete AHJ-ready package — every sheet needed for Delaware permit submission.
24–48 hoursDelaware AHJs like Wilmington Building Dept review the permit package. We handle any revisions at no charge.
2–4 weeksPermit issued — install the system, pass final inspection, and your utility processes PTO.
1–3 wks post-install⏱ Typical Delaware AHJ review time: 2–4 weeks. Submitting a complete, first-pass-ready plan set is the single best way to minimize your total project timeline.
Every Delaware solar permit plan set we produce includes interconnection drawings formatted to each utility's specific requirements. One package — AHJ and utility both covered.
Every Delaware solar permit plan set is reviewed by our senior design team before delivery, ensuring 100% compliance with NEC 2020 and Delaware AHJ requirements. We don't just draw plans — we engineer them for first-pass approval and long-term safety.
“My focus is eliminating soft costs for Delaware solar installers. A plan set needs to be so accurate that the Wilmington Building Dept reviewer has no reason to issue a correction. We stay ahead of NEC 2020 so you can stay on the roof.”
Permit Design handles Delaware solar permit drawings with expertise. Delmarva Power interconnection requirements are always correctly met in their solar plan sets.
We use Permit Design for all Delaware solar permit plan sets. Their solar engineering drawings meet Delaware Building Code and Delmarva Power requirements.
Best solar permit drawing service for Delaware. Fast, accurate, and our Delaware AHJs always approve on first submission.
Our solar permit design services cover residential solar permit drawings for every Delaware AHJ across all 3 counties. Click any city for location-specific solar permit plan set information.
Delaware adopts NEC 2020. Delmarva Power & Light has specific solar permit drawing requirements under Delaware's Renewable Energy Portfolio Standards. Delaware Electric Cooperative serves much of the rural state with its own interconnection documentation requirements.
A complete Delaware solar plan set includes cover sheet, site plan, roof layout, single-line electrical diagram, three-line diagram (where required), rapid shutdown documentation per NEC 690.12, equipment datasheets, NEC labels, and utility interconnection drawings for Delmarva Power and Delaware Electric Coop.
Most Delaware AHJs review residential solar permit applications within 2–4 weeks. Turnaround varies by jurisdiction — submitting a complete, AHJ-ready plan set on first submission is the single most effective way to minimize permitting time.
DE solar permit drawings must comply with NEC 2020. Delmarva Power and Delaware Electric Cooperative require specific interconnection documentation under Delaware's Renewable Energy Portfolio Standards.
Delmarva Power & Light requires solar permit plan sets including single-line diagram, site plan, equipment specifications, and completed Net Metering interconnection application. Our solar engineering drawings are formatted for Delmarva Power approval.
Delaware Electric Cooperative requires solar engineering drawings including single-line diagram, system specifications, site plan, and interconnection application for their Kent and Sussex County service territory.
Most Delaware solar permit plan sets are delivered in 24–48 hours. We serve all 3 Delaware counties.
Complete Delaware solar permit drawings, engineering drawings, and utility interconnection documentation — delivered in 24–48 hours for any Delaware AHJ.
Order Your Delaware Plan Set NowWe provide residential solar permit drawings and plan sets across all 50 states. Explore our solar permit design services in states neighboring Delaware.