A structural PE stamp solar review is not a second logo on the cover. It is a person taking responsibility for members, loads, and attachments. An electrical PE takes responsibility for the single-line, protection, and labels. Crews buy the wrong one because a town said “needs a PE.” Then the electrical examiner still redlines wire size, or the structural examiner still has no rafter sizes. Two problems. One wasted seal.
Athol Energy’s PE stamping offer is explicit: electrical review and structural review are separate passes inside the same process. Permit services and permit design feed both. Commercial roofs use the same split at larger scale on the commercial desk.
What a structural PE stamp solar review actually looks at
Existing framing: rafter or joist size, span, spacing, species or grade if known, truss manufacturer, condition. Loads: dead load of the array, snow, wind, drift against parapets, seismic if the code edition asks. Racking table for the site, not a Florida brochure. Attachment type and spacing with dimensions a tape can hit. Whether the roof covering and sheathing can take the fasteners. Whether a ballast plan will walk in wind.
Philadelphia’s EZ truss letter is a clean example of structural scope: inspect the framing, evaluate the PV, confirm connections will not hurt the trusses, confirm the system can take the loads. NY-Sun’s outside-NYC roof letter is the same family. Neither letter sizes a conductor.
If attic photos are missing, a honest structural PE will not invent 2x8s. Intake fails, or a site visit happens. Sistering, new sleepers, and reroof sequencing are structural construction. They belong on the Repair/building sheets, not as a note on E-001.
What the electrical PE actually looks at
Inverter listing, stringing, conductor size and insulation, raceway, OCPD, disconnects, grounding and bonding, rapid shutdown, working clearances, load-side versus supply-side interconnection, AIC, and labels. SIR Appendix F items (component ratings, protection settings, GSU data) are electrical. A 1,000 volt interconnection seal is electrical. PPL’s DER Management Device is not PE scope, but it has to appear on the electrical sheet so the inspector does not confuse it with unlabeled contractor gear.
Conflicting callouts kill electrical stamps: 200 A main on the site plan, 150 A on the SLD. Incomplete cut sheets kill them: inverter SKU on the schedule, different SKU on the PDF. That is QA before the PE, not after.
One job, two seals, one schedule
A Westchester USP house often needs structural (and the USP PE/RA on construction documents, which may be one person covering both if the town allows). A Buffalo warehouse may need structural on the roof and electrical on a three-phase SLD. An NYC DOB job has an Applicant of Record who may be PE or RA; special inspections can still pull in more parties. Do not assume the RDP is a structural PE if they are an electrical PE, or the reverse. The index should say who sealed what.
When the field moves attachments, the structural seal is stale. When the field swaps an inverter, the electrical seal is stale. As-built drawings need the right PE again. A structural as-built does not bless a different inverter.
Send the AHJ comment (or the town’s checklist), attic photos, and the SLD. We will tell you structural, electrical, or both before you pay twice.
Intake questions that pick the engineer
Is the comment about rafters, trusses, ballast, snow, wind, or attachments? Structural. Is it about wire size, tap type, AIC, rapid shutdown, or labels? Electrical. Is it about FDNY or fire path geometry? Layout first, then structural if attachments move. Is it about a utility three-line at primary voltage? Electrical PE on the interconnection exhibit. Is it a USP cover that just says construction documents must be PE or RA stamped? Often one design professional on the whole residential set, if that person will own both scopes. If they will not, split the index.
Do not send a structural PE a Con Edison CESIR. Do not send an electrical PE an attic photo and ask them to bless lag spacing. We have sat through both mistakes. They waste calendar and they produce a seal that does not answer the reviewer.
Commercial jobs on the East Coast more often need both: joist roof plus 480 V service. Residential jobs more often need structural only, except NYC where the Applicant of Record may be either PE or RA and still has to stand behind the filing. An RA is not a PE. If the town specified PE, an RA may not suffice. If the town said PE or RA, either can work. Read the form.
Cut sheets still matter for both. Racking tables are structural. Inverter listings are electrical. Incomplete cut sheets are why we hold stamps. Conflicting callouts (module count on the roof versus the SLD) are why both engineers bounce the set back to drafting. Fix the model, then seal.
If the AHJ later adds the other discipline in a comment letter, that is a second pass, not a failure of the first seal. Scope it. Rush if a crew is sitting. Do not pretend the structural stamp covers the new electrical comment.
Write the index so a clerk can see S-sheets versus E-sheets without a phone call. “PE stamped” on the cover with no discipline is how you get the wrong examiner. If one PE owns both, say “structural and electrical, [name], [license].” If two PEs own them, two blocks. NYC Applicant of Record is a third pattern: one filer in DOB NOW, possibly still using consultants for calcs. Name them on the index anyway.
Do not seal typical details that were never coordinated to the site. A structural typical with no member sizes is not a structural review. An electrical typical with no conductor sizes is not an electrical review. Site-specific notes are the product. Typicals are backup. The PE is signing the site-specific sheets.
If sales sold “one PE” and the town wants two disciplines, that is a change order, not a drafting trick. If the town wants one PE and you hired two, we can still issue one index with two blocks, or we can have one engineer take both if they are willing. Do not hide a second seal because the bid was tight. The examiner will ask who owns the SLD. Put names on the index even when everyone knows. Turnover on installer PMs is how a sealed structural set gets an unsigned electrical revision taped to it. The index is the memory.
A structural PE stamp solar pass without an electrical look is fine when the town only asked for the roof. It is a fail when they asked for the one-line. Phone +1 (209) 266-2669. Send the comment letter in their words. We will map it to structural, electrical, or both before you pay for a seal that does not answer the reviewer.
Here is a split we see every week. A township wants a letter that the roof can take the array. That is structural. The same township’s electrical inspector then fails conductor size. That is not the structural PE’s problem, and stamping the SLD with the same engineer only helps if that engineer actually reviewed the electrical. If they did not, get an electrical pass. If they did, the index should already say so. Buying one seal and hoping it covers two comments is how resubmittals stack. Send both comments. We will tell you if one engineer can own both or if you need a second pass. That conversation belongs on the kickoff, not after the first seal is already on a roof-only letter.
If the electrical fail is only a missing conductor note, we can often add it and have the electrical PE review that sheet without reopening the structural calcs. If the structural fail is missing rafter sizes, the electrical SLD can wait. Do not stall both seals for one comment. Split the resubmittal. The structural PE can finish while the electrician measures the homerun. Parallel work is how you keep the truck date. Do not hold the electrical PE for a rafter photo, and do not hold the structural PE for an inverter SKU. A structural PE stamp solar pass still has to sit next to an electrical pass when the comment letter named both. Send the letter in the reviewer’s words. We will map roof members to one engineer and the SLD to the other, or to the same engineer if they actually reviewed both. Buying one seal and hoping it answers two comments is how resubmittals stack into the install week.