Solar Design Services
Premier source for Residential & Commercial Solar Design and EV Permitting.

Overview
World CAD Design LLP provides comprehensive solar design solutions tailored to meet the dynamic needs of the renewable energy industry. Whether you are a residential installer or a commercial developer, our expert team delivers precise, code-compliant plan sets that streamline the permitting process. We act as your dedicated engineering back-office, ensuring speed, accuracy, and reliability in every project.
Key Features
- ✓ Nationwide Permitting Support
- ✓ Residential & Commercial Expertise
- ✓ Fast Turnaround Times
- ✓ Full Engineering Stamping
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Get a QuoteResidential Solar Design Services
Our core expertise lies in high-volume residential solar permitting. We provide complete plan sets that include PV layouts, stringing diagrams, electrical calculations, and mounting details, all optimized for AHJ and utility approval. We support rooftop, ground-mount, and canopy installations.
Features
- ✓ PV Plan Sets
- ✓ Single Line Diagrams
- ✓ Battery Storage Design
- ✓ Shading Analysis
- ✓ NEC Code Compliance
Interested in Residential Solar Design Services?
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Proposal Design
Stop using generic 2D layouts. Our premium 3D sales proposals visualize the homeowners potential savings and aesthetic impact. We combine accurate production modeling with beautiful 3D renders to create a proposal that builds trust and excitement.
Features
- ✓ Photorealistic 3D Renders
- ✓ Shading & Production Analysis
- ✓ Financial Savings Charts
- ✓ Custom Branding
Interested in Proposal Design?
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Permit Planset Design
Comprehensive and code-compliant solar permit packages designed for rapid approval. Our plan sets include site plans, structural details, electrical three-line diagrams, and safety labels, ensuring your project meets all local AHJ and NEC standards.
Features
- ✓ NEC Compliant Electrical Diagrams
- ✓ Site Plan & Roof Layouts
- ✓ Safety Labeling Requirements
- ✓ Fire Setback Compliance
Interested in Permit Planset Design?
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As-Built Drawing Design
Accurate post-installation drawings that reflect the field conditions. We update original plans with redlines and field changes to ensure final inspections pass smoothly and system records are exact for future maintenance.
Features
- ✓ Redline Updates
- ✓ Field Field Verification
- ✓ Final Inspection Support
- ✓ System Record Documentation
Interested in As-Built Drawing Design?
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Add-On & Solar Design
Expert design for expanding existing solar systems. We handle compatibility checks, inverter resizing, and Main Panel Upgrades (MPU) if necessary to accommodate increased capacity while maintaining system integrity.
Features
- ✓ System Compatibility Checks
- ✓ MPU Load Calculations
- ✓ Inverter Matching
- ✓ Expansion Permitting
Interested in Add-On & Solar Design?
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Solar Carport Design
Specialized design services for solar carports and canopies. We integrate structural robust design with optimal PV placement, perfect for maximizing production in limited roof space scenarios or providing dual-use functionality.
Features
- ✓ Structural Foundation Design
- ✓ Cantilever & T-Structure Layouts
- ✓ EV Charging Integration
- ✓ Shading Optimization
Interested in Solar Carport Design?
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Interconnection Application Design
Streamline your utility approval process with our interconnection support. We prepare all necessary electrical single-line diagrams, site maps, and technical data sheets required by utility companies for grid connectivity.
Features
- ✓ Utility-Specific SLDs
- ✓ Site Maps
- ✓ Technical Data Sheet Preparation
- ✓ Utility Coordination
Interested in Interconnection Application Design?
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Commercial Solar Design
We handle complex commercial, industrial, and agricultural solar projects (100kW - 5MW+). Our commercial designs account for interconnection complexity, voltage drop optimization, and specific structural considerations for flat roofs or carports.
Features
- ✓ Commercial PV System Design
- ✓ MW Scale Plant Layouts
- ✓ Commercial Battery Storage
- ✓ Voltage Drop Analysis
- ✓ Equipment Specification
Interested in Commercial Solar Design?
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Structural Engineering
Safety and compliance are paramount. Our licensed structural engineers provide stamped letters. We analyze roof load capacity, wind uplift, and snow loads to ensure your solar installation or building addition is structurally sound and code-compliant.
Features
- ✓ PE Stamped Letters
- ✓ Wind & Snow Load Analysis
- ✓ Truss Reinforcement
- ✓ Foundation Design
Interested in Structural Engineering?
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EV Charging Infrastructure
As electric vehicle adoption grows, so does the need for rapid, compliant infrastructure. We provide full electrical load calculations, site plans, and single-line diagrams for Level 2 and DC Fast Charging stations. We ensure ADA compliance and utility coordination.
Features
- ✓ Load Calculations
- ✓ Site Plan Layouts
- ✓ ADA Compliance
- ✓ Single Line Diagrams
Interested in EV Charging Infrastructure?
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