• 30 N Gould St Ste R Sheridan, WY 82801 United States
  • info@solartro.com
+1 307-429-3502

Solar Permit Design

Permit-Ready, Code-Compliant Solar Plan Sets That Get Approved — Faster

At Solartro, we deliver permit-ready solar plan sets engineered to meet local AHJ, utility, fire, zoning, and electrical code requirements—helping solar installers and EPCs secure approvals quickly and install with confidence.

From residential rooftops to multi-megawatt commercial installations, ground-mount systems, battery storage, and generator integration—our designs are precise, complete, and approval-focused. Built to minimize revisions, reduce delays, and keep projects moving.

Fast turnaround. High approval rates. Nationwide coverage.

WHAT'S INCLUDED IN OUR PERMIT DESIGN PACKAGE

Every Solartro permit package is engineered, structured, and field-ready. We don't cut corners—our plan sets include every document, drawing, calculation, and specification your AHJ and utility require.

COMPLETE SOLAR PERMIT PLAN SET

  • Cover Sheet & Project Information:
    • Professional title page with project name, address, and system overview
    • Sheet index with organized drawing list
    • Governing codes section: NEC, IBC, IFC, local amendments
    • Project description: System size (kW DC/AC), module count and scope summary
    • Vicinity map, Parcel Number and Aerial view photo with array location marked
  • Site Plan & PV Array Layout:
    • Roof plan or ground-mount layout with dimensions
    • PV array location, spacing & obstruction mapping
    • Fire setback compliance ( 3' pathways, ridge access, hip/valley clearances per IFC requirements)
    • Property lines (front, side, rear yard dimensions)
    • PV module placement and quantity (shown to scale)
    • Main service panel (MSP) location or utility meter and other electrical equipment location
    • Conduit routing paths from array to electrical interconnection
    • String layout showing series wiring of modules
    • Array dimensions: overall length, width, and area coverage (sq ft)

Structural Details & Mounting Specifications:

  • For Roof-Mounted Systems:
    • Roof attachment method (penetrating/non-penetrating, rail/railless)
    • Mounting method & racking system
    • Attachment point spacing and pattern layout
    • Point load calculations at each attachment location
    • Dead, live, wind & snow load assumptions per ASCE 7
    • Lag bolt or through-bolt specifications (size, length, torque requirements)
    • Cross-section views showing module tilt, rafter attachment, roof decking, and framing
  • For Ground-Mount Systems:
    • Foundation details (helical piles, concrete piers, ballasted)
    • Racking structure specifications and engineering
    • Post spacing and depth requirements
    • Trenching and conduit routing plans
    • Civil site grading and drainage considerations

Electrical Design & Calculations (NEC-Compliant):

  • Complete electrical system flow from PV array to utility interconnection
  • Single-Line Diagram (SLD) and Three-Line Diagram (3LD) - for commercial/complex systems
  • All major components: modules, inverters, combiners, disconnects, MSP, utility meters
  • Detailed three-phase wiring schematic showing all conductors, phases (A, B, C), neutral, and ground
  • Phase balancing across inverters and electrical panels and load distribution
  • Grounding system: Grounding electrode conductor (GEC), ground rods, equipment grounding
  • String sizing and configuration (Voc, Isc, Vmp, Imp)
  • 120% rule calculation: Main breaker + solar breaker ≤ 1.2 × bus bar rating (NEC 705.12(D)(2))
  • Wire and conduit sizing per NEC Article 310
  • Voltage drop calculations (Maintaining <2% voltage drop on DC side, <3% on AC side)
  • Overcurrent protection device (OCPD) sizing ,Grounding and bonding details per NEC Article
  • Arc-fault protection (AFCI) per NEC 690.11
  • Busbar or panel capacity verification & Rapid shutdown requirements per NEC 690.12
  • Interconnection Method Details:
    • Load-side breaker interconnection
    • Line-side tap connection (supply-side)
    • Subpanel/separate service installation
    • Utility coordination requirements

System Specifications & Equipment Datasheets:

  • Equipment datasheets (modules, inverters, disconnect, combiners, racking, batteries, generators and other electrical components)
  • System labels & safety placards
  • Placard size, placement details & compliant text
  • Bill of Materials (BOM) / Balance of System (BOS)
  • Placard physical size specifications: typically 3" × 5" or larger, reflective vinyl, white letters on red background (for fire department visibility)
  • Complete placard package meeting NEC 690.56 requirements ( Solar PV System, Rapid shutdown, Interconnection and Battery storage placards)
  • Arc flash warning labels: At electrical equipment per OSHA requirements

Battery Storage Integration :

Code-Compliant Battery Backup Plans That Get Approved Faster

Battery permitting can be complex—but Solartro simplifies it.

  • We design permit-ready battery storage plan sets for:
    • Grid-tied systems, Off-grid systems & hybrid system designs supported
    • AC-coupled & DC-coupled configurations
    • Battery add-ons to existing solar
    • Whole-home backup & Critical load backup
    • Tesla Powerwall, Enphase IQ Battery (all major brands supported)

What’s Included

  • Battery system layout and placement (indoor/outdoor, wall-mount/floor-mount, NEMA enclosure ratings)
  • Electrical integration diagrams: SLD & 3LD (as required)
  • SLD & 3LD (as required)
  • Automatic Transfer Switch (ATS) integration for backup power & Critical load subpanel (if partial-home backup) or Microgrid Interconnect Device (MID) integration
  • Fire code clearances (NFPA 855): Minimum distances from combustibles, egress paths, ventilation requirements and exhaust specifications, smoke and thermal detection requirements
  • NEC Article 706 (Energy Storage Systems) compliance: UL 9540 and UL 9540A certification documentation, rapid shutdown compliance per NEC 690.12
  • Equipment datasheets & placards
  • Safety placards: ESS warning labels, fire department information
  • Battery management system (BMS) documentation, fire suppression (if required), smoke/gas detection

We turn complex battery permits into smooth approvals.

Commercial Solar Permit Design Services

Permit-Ready Engineering for Commercial & Industrial Solar Projects

Commercial solar projects demand a higher level of engineering precision, regulatory coordination, and documentation accuracy. From complex electrical interconnections to structural load verification and fire code compliance, even small permit errors can lead to costly delays.

At Solartro, we deliver permit-ready commercial solar plan sets engineered to meet AHJ, utility, fire, and building department requirements—helping EPCs, developers, and contractors secure approvals faster and build with confidence.

From rooftop systems to ground mounts, carports, and energy storage, our commercial permit designs are accurate, code-compliant, and field-ready.

COMMERCIAL SOLAR PERMIT PLAN SET (Expanded for Larger Systems)

All residential components PLUS:

  • Enhanced Electrical Design:
    • Three-phase electrical systems (208V, 277V, 480V configurations)
    • Medium-voltage (MV) interconnections (12.47 kV, 24.9 kV utility connections)
    • Pad-mount transformer specifications and location
    • Multiple inverter configurations with load balancing
    • Advanced metering infrastructure (AMI), SCADA integration (if utility-scale)
  • Advanced Structural Engineering:
    • Rooftop load analysis for commercial buildings
      • Existing roof structure assessment (steel joist, concrete deck, wood framing)
      • Dead load, live load, wind uplift, and seismic calculations per ASCE 7
      • Structural reinforcement recommendations (if needed)
    • Carport solar structures
      • Column foundations, beam specifications, canopy framing
      • Vehicle clearance heights (minimum 14 feet for commercial parking)
      • Parking layout coordination
    • Ground-mount utility-scale
      • Tracker system specifications (single-axis or dual-axis)
      • Civil engineering (grading, drainage, erosion control)
      • Array block layouts with inverter stations and string combiners
      • Access roads and maintenance pathways
  • Fire Safety & Code Compliance:
    • Fire Marshal requirements (IFC compliance):
      • Roof access pathways (minimum 3-foot or 6-foot pathways, depending on jurisdiction)
      • Smoke ventilation openings, firefighter access and standpipe locations
      • Aerial view showing all fire access routes
    • Arc fault protection: AFCI (Arc-Fault Circuit Interrupter) devices per NEC 690.11
  • Production Analysis:
    • PVsyst or Helioscope production modeling report:
      • Annual energy production estimate (kWh/year)
      • Performance ratio (PR) & shading loss analysis
      • Temperature derating & system efficiency breakdown

Generator Installation Permit Design Services

Permit-Ready Generator Plans for Reliable Backup Power

Power reliability is mission-critical—especially during outages, grid failures, and extreme weather events.

At Solartro, we deliver professionally engineered, permit-ready generator plan sets that simplify approvals and ensure safe, code-compliant generator installations for residential, commercial, and industrial projects.

Our generator permit designs are built to meet local AHJ, electrical, building, zoning, and fire code requirements, helping installers secure approvals faster and install with confidence.

What’s Included

  • Generator placement with clearances (18–60 inches from structure, 60 inches from windows/doors, property setbacks)
  • Concrete pad specifications (4–6 inches thick, reinforced, dimensions)
  • Fuel system routing (natural gas line, propane tank location, diesel storage)
  • Electrical integration and transfer switch details
  • Automatic Transfer Switch (ATS) location and wiring
  • Generator-to-ATS conduit routing & load management (whole-home vs. essential circuits)
  • Fuel type & safety clearances
  • Conduit routing & grounding
  • Coordination with solar/battery systems (if hybrid backup)
  • AHJ-compliant notes & NEC Article 702 (Optional Standby Systems) compliance
  • Manufacturer datasheets: Generator specifications (Generac, Kohler, Cummins), ATS From planning to permit approval—we guide you end to end

WHY CHOOSE SOLARTRO FOR SOLAR PERMIT DESIGN

High First-Time Approval Rate, NEC & Code Mastery

  • 97.8% AHJ approval rate on initial submissions
  • Deep knowledge of local code amendments and AHJ preferences
  • Expert understanding of: NEC, (IBC) ,(IFC) and State-specific amendments.
  • Code compliance verification on every design element
  • IEEE 1547 interconnection standards & NFPA 855 energy storage system safety
  • ASCE 7 structural load standards (wind, snow, seismic)

Complete In-House Engineering Team

  • Licensed Professional Engineers (PE) in multiple states for structural and electrical stamps
  • Experienced CAD technicians with solar-specific training
  • Quality control review process — every plan set reviewed by senior engineer before delivery

Nationwide Coverage with Local Expertise

  • All 50 states — experience in every jurisdiction
  • Jurisdictional database: Over 18,000 AHJ requirements documented in our database
  • Familiarity with regional installation practices, climate considerations, and permitting quirks.

Adaptable to Your Workflow

  • Use our templates (professionally designed, code-optimized, time-tested)
  • Use your templates (we adapt to your branding, formatting, and preferences)
  • Hybrid approach (our engineering, your formatting)
  • Custom standards and preferences accommodated
  • Compatible with all major solar design software (Aurora, Helioscope, PVcase, Solar Design Tool)

Transparent Pricing

  • Fixed, upfront pricing — no surprise charges
  • Volume discounts for high-volume installers (tiered pricing based on monthly volume)
  • Custom quotes available

Installer-Friendly Designs

  • Clear, easy-to-read drawings that installation crews can actually use in the field
  • Logical sheet organization and consistent formatting
  • Detailed notes and callouts eliminating guesswork
  • Field-proven designs that work in real-world conditions

We Stand Behind Our Work

  • Free revisions for AHJ-requested corrections (within original scope)
  • Unlimited rounds until approval
  • Dedicated support throughout permitting process
  • Your approval is our commitment

OUR SOLAR PERMIT DESIGN PROCESS

Transparent, Efficient, and Designed for Installer Success

PROJECT INTAKE

  • What we need from you:
    • Site address & property owner details
    • System size target (kW DC) or approved layout & module count
    • Solar modules (manufacturer, model, wattage)
    • Inverters (manufacturer, model, quantity, MPPT ranges)
    • Racking system (manufacturer, model/series)
    • Batteries & generator (if applicable): manufacturer, model, capacity, kW rating
    • Roof measurements, photos (or satellite imagery access) & obstructions and site-specific concerns
    • Utility service details & electrical panel photos (rating, available space)
    • Attic photos (rafter spacing, framing for roof installs)
    • AHJ-specific forms or templates (if you have them)

How to submit:

  • Online portal: Upload all documents via our secure client portal (fastest)
  • Email: Send project package to info@solartro.com
  • Phone: Call us to discuss the project and we’ll guide you through submission

What happens next:

  • Instant quote and timeline confirmation (within 1 hour during business hours)
  • Project assigned to a dedicated design engineer
  • You receive a project tracking link with real-time status updates

PE STAMP PROCUREMENT (if required by AHJ)

  • Professional engineering stamps:
    • Structural PE stamp or electrical PE stamp & PE coordination
    • Commercial systems (most jurisdictions require PE for commercial)
    • Residential systems in certain states (Florida, New York, parts of California, etc.)

ENGINEERING & DESIGN

  • Our team executes:
    • Code research: Identify applicable NEC cycle, local amendments, fire code requirements
    • Structural calculations: Wind, snow, seismic, dead/live load analysis per ASCE 7
    • Electrical engineering: String sizing, wire/conduit sizing, voltage drop, interconnection method, grounding
    • CAD drafting: Professional plan set with all required sheets (cover, site plan, roof plan, electrical diagrams, structural details)
    • Equipment verification: Compile datasheets and verify compatibility
    • Placard design: Create code-compliant safety labels and signage

REVIEW & REVISIONS

  • Quality assurance:
    • Plans delivered to you for review and approval
    • Fast feedback loops for installer-requested changes
    • Approval-focused refinements based on AHJ history
    • Free AHJ corrections: If rejections are due to our design (not scope changes), revisions are free and fast (typically same-day turnaround)
    • Unlimited revision rounds until permit approval (within original scope)

PERMIT-READY DELIVERY

  • What you receive:
    • Complete digital plan set package & organized file delivery
    • Cloud link (Dropbox, Google Drive, or your preferred platform)
    • Encrypted file transfers & email delivery
    • Customer data never shared with third parties
    • Secure cloud storage with access controls

Freequently Asked Questions

What does the Solar Proposal Design service include?

Complete proposal drawings (2D/3D), production & shading analysis, financial projections (payback, NPV, LCOE), equipment specifications, and client-ready presentation files (web link, PDF, slides).

How do you determine the right system size?

We analyze historical energy usage (if provided), roof constraints, shading analysis, and client goals (target offset %) to recommend optimal sizing. Can design from address-only or with detailed utility data.

How fast can I get a proposal?

Standard delivery: 12 hours. Priority: 4-6 hours. Express (high-volume partners): 30 minutes to 2 hours. 24/7 operations for global time zone support.

Is this service suitable for new installers?

Absolutely! Our professional proposals help new installers establish credibility from day one—clients can't tell if you've done 5 projects or 500 projects based on proposal quality.

How accurate are the savings estimates?

All projections are climate-specific, degradation-adjusted, and based on industry-validated modeling (NREL methodologies). We use real weather data, not national averages. Accuracy within ±5% of actual performance.

Can you support permits after the proposal stage?

Yes! Our proposal designs are fully compatible with our downstream Solar Permit Design services. Seamless handoff from sales → permitting with zero data loss.

What if my client wants revisions after seeing the proposal?

Minor revisions (panel count adjustments, equipment swaps) are typically included. Major scope changes (different roof, system size changes) may require additional design time. High-volume partners get priority revision support.

How much does proposal design cost?

Pricing varies by project complexity, volume, and turnaround speed. Contact us for custom quote: info@solartro.com. Volume discounts available for installers with recurring needs.

Solartro provides professional solar permit design, solar engineering, CAD drawings, and PE-stamped plans for residential and commercial solar projects across all 50 U.S. states. Fast, accurate, and AHJ-compliant solutions.

Company

Services

Contact Info

  • 30 N Gould St Ste R Sheridan, WY 82801 United States
  • Brigade IRV Centre 9th Floor Nallurhalli Road, Nallurhalli Whitefield Bengaluru – 560066 Karnataka, India
  • +1 307-429-3502
  • info@solartro.com

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