Solar Design

Solar PV Engineering & Design

We provide comprehensive solar photovoltaic (PV) system design services for commercial, industrial, and utility-scale projects. Our designs comply with applicable codes andstandards, including the National Electrical Code (NEC Article 690, 705, 706), NFPA 70,NFPA 70E, International Building Code (IBC), International Fire Code (IFC), and local utility interconnection requirements. Services include system sizing, equipment selection, stringdesign, single-line diagrams, layout drawings, voltage drop calculations, grounding and bonding design, rapid shutdown compliance, and utility coordination. Our designs focuson safety, performance, code compliance, and long-term system reliability.

Engineering Capabilities

  • Solar Feasibility and Energy Yield Studies
  • Photovoltaic System Sizing and Optimization
  • Utility Interconnection Support
  • DC and AC Electrical Design
  • Inverter and Transformer Selection
  • Ground-Mounted, Rooftop, and Carport Solar Design
  • Battery Energy Storage System (BESS) Integration
  • Protection and Grounding Design
  • Construction and Permit Documentation

Design Deliverables

  • Single-Line Diagrams (SLD)
  • Three-line Diagram
  • Site and Array Layouts
  • Stringing and Equipment Layout Drawings
  • Conduit and Conductor Sizing Calculations
  • Voltage Drop and Load Flow Analysis
  • Equipment Specifications and Schedules
  • Interconnection Packages
  • Permit and Issued-for-Construction (IFC) Drawings

Our Approach

Every solar project is engineered with a focus on energy production, system reliability, code compliance, and ease of installation. Through detailed engineering analysis and coordination with utilities, contractors, and stake holders, we help clients successfully deliver renewable energy projects from concept through construction.

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3S MEP + S provides integrated MEP, Fire Protection, Fire Alarm, BIM, Energy Modeling, and Structural Engineering services for building projects.

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