Roof structural letters, attachment checks, electrical plans and EV charger load calcs for solar and EV installers – fast, consistent and sealed where required.

Every install needs the same things quickly: a roof structural check, attachment spacing, an electrical one-line and sometimes a load calculation. Waiting days for each one delays the crew and the customer.
Send us the site details and equipment. We return a consistent package your AHJ recognises, so permits move and installs stay on schedule.
Choose a tab for the details.
Rafter, truss and attachment checks for the new array.
One-line diagrams, conductor sizing and labeling.
Service capacity checks and circuit design.
ESS layout, clearances and electrical design.
NEC load calculations for panel and service upgrades.
Consistent templates across your installs.
Standardised layouts, clear notes and quick turnaround make your packages easy to review and quick to approve.

The projects we prepare most often for clients like you – tap one for details.
Address, scope and any plans, photos or plan-check comments.
Scope, price and delivery date in 5-10 minutes. Nothing starts until you approve.
Drawings and calculations prepared in CAD to your local code.
Sealed and stamped where required. PDFs (and CAD on request).
Most letters are delivered quickly once we have the roof framing information and photos. You get a firm delivery date with every quote.
Roof framing size and spacing, roof photos, array layout and equipment specifications.
Yes. Installers with regular volume get consistent pricing and priority turnaround.
Where required, letters and plans are sealed by an engineer licensed in the project’s state.
Tell us about your project and upload any plans, sketches or photos you have. An engineer reviews every request personally and replies with a clear scope, price and delivery date – typically within 5 to 10 minutes.