Solar installers and property owners across Pennsylvania, New York, Delaware, and Texas trust NEC Solutions LLC for fast, utility-accepted PE stamped structural letters and solar permit drawings. Most letters delivered in 3–5 business days.
Solar panels add real weight to your roof — a typical residential array adds 3–5 lbs per square foot of dead load. On top of that, the racking hardware creates point loads and increases wind uplift forces on the roof framing. If the existing roof structure isn't adequate to handle these loads, you're looking at potential long-term structural problems.
That's why utilities in Pennsylvania, New York, Delaware, and Texas require a PE-stamped structural letter as part of the interconnection approval process — before your solar system can be connected to the grid. Building departments also require it for the installation permit in most jurisdictions. Without a PE letter, your solar installer's application gets rejected — delaying the entire project.
At NEC Solutions LLC, solar structural letters are one of our most requested services. We work directly with solar installation companies, EPC contractors, and property owners to deliver fast, accurate, utility-accepted PE letters and drawing packages. We know what PECO, PPL, Con Edison, PSEG Long Island, Oncor, CenterPoint, and Delmarva Power need — and we deliver it.
For most residential installations, we deliver the PE letter within 3–5 business days of receiving the system design information from your installer.
Solar letter in 3–5 days. Get a free quote today.
Request Solar PE Letter →A PE structural letter is not just a formality — it's a real engineering assessment. Our licensed PE reviews the following and certifies that the roof structure can safely support the proposed solar array:
If the existing roof structure is marginal for the proposed system, we'll tell you honestly — and recommend the minimum structural upgrades needed to make it work safely. We'd rather tell you the truth upfront than stamp something that could cause problems down the road.
Solar Panel Array
Roof Framing
A formal letter from a licensed PE certifying the roof structure can support the proposed solar system. Formatted to meet utility interconnection requirements in your state and accepted by all major utilities in PA, NY, DE, and TX.
Engineering calculations verifying dead load capacity, wind uplift resistance, and attachment spacing adequacy — based on the actual roof framing conditions and the proposed solar system specifications from your installer.
For municipalities requiring full permit drawings rather than just a letter, we provide a roof plan showing the panel array layout, attachment locations, setbacks, and structural notes — PE-stamped and formatted for building department submission.
All documents are signed and sealed by a PE licensed in your state — PA, NY, DE, or TX. Digital seal on PDF for fast electronic submission to utilities and building departments. Wet stamp available on request.
Once we receive the solar system specs from your installer, most standard residential letters are completed and delivered within 3–5 business days. Faster turnaround is available for urgent interconnection or permit deadlines — call to discuss.
If your utility or building department requests revisions to our letter or drawings, we address them at no extra charge. We know what utilities want to see and we write our letters to minimize back-and-forth from the start.
We know what each major utility in our service states requires for their interconnection application. Our PE letters are formatted to meet those requirements and are consistently accepted without unnecessary back-and-forth.
The most common request — homeowners installing rooftop solar on single-family homes across PA, NY, DE, and TX. We evaluate the existing rafter or truss framing, assess the dead load capacity, and certify the roof can support the proposed panel array and racking system.
Commercial rooftop solar — on office buildings, warehouses, retail, and industrial facilities — involves more complex structural analysis than residential. Flat or low-slope roofs, built-up roofing systems, and steel joists require careful engineering. We handle the full commercial solar structural package.
Call (610) 888-9818 or submit online. Tell us the property address and solar system type.
We send a clear upfront quote within 24 hours — no hidden fees.
Your solar installer emails us the system design — panel specs, racking layout, and attachment pattern.
We complete the structural analysis and prepare the PE-stamped letter or drawing package.
PE letter delivered by email in 3–5 days. Submit to utility and building department immediately.
Most of this information comes directly from your solar installer — you don't need to gather everything yourself. Just connect us with your installer and we'll take it from there.
Most solar letters are delivered in 3–5 business days. Contact us now and we'll have a quote to you within 24 hours.
Request a Solar PE Letter → Call (610) 888-9818Are you a solar installer?
We work with many solar companies across PA, NY, DE, and TX on a recurring basis. Ask us about our installer pricing and volume arrangements.
PECO, PPL, West Penn Power. Philadelphia, Pittsburgh, Chester County & statewide.
Con Edison, PSEG Long Island. NYC, Long Island, Westchester & upstate.
Delmarva Power. Wilmington, Newark, Dover & across all three DE counties.
Oncor, CenterPoint, AEP Texas. Houston, Dallas, Austin, San Antonio & statewide.
Utilities require a PE structural letter to confirm the roof can safely support the added weight and wind loads from the solar array before approving grid interconnection. This protects the homeowner, the utility, and the solar installer from liability if structural problems arise later. Without the letter, the interconnection application will be rejected.
Most residential solar letters are delivered within 3–5 business days once we receive the solar system design specs from your installer. For urgent interconnection or permit deadlines, call us at (610) 888-9818 — we can often accommodate faster turnaround for qualifying projects.
No — most solar structural letters are completed remotely. We work from the solar system design specs provided by your installer plus photos of the attic framing (if available). An on-site inspection is only required in unusual cases where the framing conditions are unclear from available information. The vast majority of our solar projects are handled entirely by email with no site visit needed.
If our analysis finds the existing roof framing is marginal for the proposed solar system, we'll provide an honest assessment and recommend the minimum structural upgrades needed. In most cases, the fix is simple — adding sister rafters, reinforcing specific attachment points, or reducing the panel layout. We never stamp something we can't stand behind.
Yes — we work with many solar installation companies in PA, NY, DE, and TX on a recurring project basis. If you're a solar installer who needs reliable, fast PE letters across multiple projects, contact us to discuss our installer pricing and workflow. We're used to working within your project management system and can handle volume efficiently.
It depends on your municipality. Most utilities only need a structural letter for interconnection. However, some local building departments require full permit drawings — including a roof plan with panel layout, attachment details, and structural notes. We can confirm what your specific jurisdiction requires and prepare the appropriate documents.
Free quote within 24 hours. Accepted by all major utilities in PA, NY, DE & TX.
