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I need a complete, code-compliant design package for a 100 kW rooftop PV array on an office building in the United States. Because the system will be submitted for permits and utility interconnection here, proven US experience is essential—please be comfortable working with the latest NEC, local AHJ requirements, and typical utility interconnection rules. Project context • Building type: mid-sized commercial office. • Available infrastructure: ample, unobstructed roof area; no parking-lot or ground mounts planned. • Primary objective: strengthen the company’s environmental sustainability profile; cost savings are welcome but secondary. What I expect from your work 1. Optimal string and inverter sizing, shade and production analysis (Helioscope, PVsyst or similar). 2. Single-line diagrams, conduit/cable schedules, and protection calculations ready for a US PE stamp. 3. Roof layout with panel placement, structural load map, and attachment details suited to common US racking hardware. 4. Bill of materials listing major equipment (modules, inverters, racking, combiner boxes, monitoring). 5. Permit set formatted for AHJ submission, plus a utility interconnection package. 6. Brief narrative explaining design choices and projected annual generation. I will supply as-built roof drawings, utility bills, and load data once we start. Please share examples of previous US commercial designs of similar scale when you respond, along with the software you intend to use and your expected turnaround time.
Project ID: 40391806
21 proposals
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21 freelancers are bidding on average $576 USD for this job

I am an experienced and versatile engineer ready to tackle your solar design project head-on. With a strong understanding of mechanical design, electronics, and software development, I can offer comprehensive solutions that cater to the full spectrum of your design needs. Whether it's working on CAD designs or deploying actual solar arrays, my unique skill set gives me a systems-level perspective that ensures increased efficiency, practicality and real-world feasibility for your commercial 100 kW solar project. One area where I specialize is cost optimization which to be honest, my profile clearly explains why I'm best positioned to handle your project without sacrificing performance - an important aspect noted as only secondary in the project description. My extensive experience not just designing code-compliant systems but also working with relevant local authorities on getting permits guarantees a smooth and hassle-free process for your project. You can further trust in my ability to produce reliable documentation for your US PE stamping and AHJ submission.
$2,500 USD in 25 days
6.4
6.4

I will need the city solar irradiation data and the roof plan. I have done my own solar design and helped few solar companies in India. ................................................................................................................
$999 USD in 18 days
6.5
6.5

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Antenna Design (CST, HFSS) Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
$500 USD in 7 days
6.0
6.0

Hi, I am ready to support with the complete design package for your 100 kW rooftop PV array. The design will be optimized for performance, manufacturability, and compliance with the latest NEC, local AHJ requirements. Before starting, please confirm the following: 1. Should the roof layout prioritize maximum energy yield or minimal structural impact? 2. What inverter topology do you prefer central vs. string inverters for this 100 kW rooftop? Project Deliverables 1. Optimal string and inverter sizing 2. Single line diagrams and cable schedules 3. Roof layout with panel placement and BOM Tools I Use • Helioscope / PVsyst • ETAP I have 7+ years of experience and have worked on projects: • Commercial Rooftop PV designed with NEC compliant conduit schedules and standards approved layouts • Industrial PV Plant developed with full interconnection package and PE ready single line diagrams. Looking forward to your confirmation so we can proceed. Warm regards, Abubakar
$721 USD in 7 days
5.1
5.1

Hi, Your project stood out—I’d be glad to design a **100 kW commercial solar system** that is efficient, reliable, and code-compliant. I specialize in **solar PV system design**, focusing on optimal panel layout, inverter sizing, and accurate electrical planning to maximize performance and ROI. ✔ Complete system design & layout ✔ Load calculations & equipment sizing ✔ Code-compliant, permit-ready documentation I’ll ensure your system is both technically sound and practically efficient. Quick question: Is this a rooftop or ground-mounted system? Best regards, Kiran deep kaur
$263 USD in 1 day
5.0
5.0

Hi There, Thank you for sharing the project details—this is exactly the type of high-impact commercial solar project we specialize in and we’d be excited to support you in delivering a fully code-compliant, permit-ready 100 kW rooftop PV system in the US. We have proven experience delivering US commercial rooftop PV designs (50 kW–MWs) and strong working knowledge of NEC, AHJ expectations, and utility interconnection processes. We provide solar permit design as below: - 1. Selection of System components, their integration sizes & selection of various components. 2. Project Description, Governing Codes 3. Site Plan, Roof Plan Details with Panels 4. Layout & String details 5. Equipment elevation if required 6. Attachment Details 7. 1/3 line diagram 8. Panel schedules 9. Conduit and Wire Sizing & Scheduling 10. Load Calculation 11. Voltage Drop 12. BOM & BOQ and 13. Special requirement Provided by IEC, AHJ, NEC and other Governing Bodies Requirements. We’ve successfully supported similar commercial rooftop projects across the US, and I’d be happy to share sample designs that align closely with your scope. Once you provide the as-built drawings and utility data, we can begin immediately and keep the process streamlined from concept to submission. Looking forward to collaborating on this project. Best regards, Sudhir
$401 USD in 7 days
4.8
4.8

Hi, I’m a multidisciplinary engineer focused on design + analysis, delivering production ready CAD and simulation-backed solutions. I work across mechanical and architectural scopes, with clear drawings, practical detailing, and fast communication. Feel free to check my profile for similar projects ,happy to review your scope and suggest the best next steps. G. Zaralı
$750 USD in 4 days
4.7
4.7

With a mix of solid technical skills and practical knowledge, I am confident that I am the right person for the commercial 100 kW Solar Design project. While my profile may not scream 'solar design expert' at first sight, my ability to adapt and learn quickly has allowed me to successfully tackle diverse projects in multiple fields in the past, including some involving energy generation and optimization. This wide-ranging expertise will surely come in handy as I work to meet US-specific regulations such as NEC and AHJ requirements. Prioritizing efficiency and compliance alike, my mastery of tools like Python and MATLAB can provide you with detailed shade analysis, precise production forecasts, optimal string and inverter sizing, among other needs listed in your project requirements - ensuring a robust design package. Additionally, my capacity to familiarize myself with new software quickly strengthens my adaptability should there be a specific tool with which your organization prefers working. My turnaround time is also quite prompt thanks to a solid record of efficient project management.
$250 USD in 7 days
3.9
3.9

Hi, I reviewed your requirements, and this is a permit-grade PV design where compliance and documentation accuracy are critical. I can deliver a complete 100 kW rooftop system package, including string/inverter sizing, production analysis, and AHJ-ready drawings aligned with NEC and utility interconnection standards. You’ll get clean single-line diagrams, cable schedules, protection calculations, and a structured BOM ready for PE review and stamping. The layout will account for roof constraints, structural loading, and standard US racking systems to ensure smooth approval and installation. I’ll use tools like Helioscope/PVsyst to validate performance and provide a clear generation narrative. Once we connect, I’ll share relevant US-scale work and outline timelines. Quick question, which state/AHJ is this project under? Best regards, Muskan
$250 USD in 2 days
3.3
3.3

Hi, This is a strong fit because this is not just a PV layout job — it’s a **permit and interconnection design package** for a **100 kW US commercial rooftop system**, where the stringing, protection, drawings, and documentation all need to hold up under real AHJ and utility review. I can help with: * optimal **string + inverter sizing** * production / shade analysis (**Helioscope / PVsyst**) * **single-line diagrams**, cable/conduit schedules, and protection calculations * roof layout with attachment strategy and load considerations * major-equipment BOM * permit-set and utility interconnection documentation * short narrative explaining the design choices and expected annual generation What matters most here is producing a package that is not just technically correct, but **submission-ready** and easy for your PE / reviewer to work from. That’s exactly how I’d approach it: clean calculations, practical layouts, and code-conscious documentation from the start. If you send the roof drawings and utility context, I can quickly confirm the best design path, software workflow, and realistic turnaround. Best regards. Ankit.
$250 USD in 7 days
2.3
2.3

Hi, I can deliver a complete, code-compliant design package for your 100 kW rooftop PV system, fully aligned with the latest NEC and US AHJ requirements. I have solid experience with US-based projects, including permitting and utility interconnection. I’ll provide optimized string and inverter sizing, detailed production and shading analysis (Helioscope/PVsyst), along with professional single-line diagrams, cable schedules, and protection calculations ready for PE review and stamp. I focus on clean, accurate, and permit-ready deliverables with quick turnaround. Let’s discuss your project details and timeline. Best regards,
$500 USD in 7 days
2.0
2.0

Hi, As you mention here, have to Design 100KW roof top solar permit plan set with stamp for USA (as per AHJ rules). I am B.Sc. Electrical Engineer and I have dedicated more than 16 years of experience & professional in this sector (solar permit set drawing design in CAD). I am highly interested on this project. I understand that what you want. I hope you will massage me and discus about your important project. For permit plan set my need client name with address, solar panel and inverter model or data sheet. I am looking for a great relationship in future. Best and regards, Engr. Sadeque
$350 USD in 3 days
1.7
1.7

Hello, I can deliver a complete, code-compliant design package for your 100 kW rooftop PV system in the United States. I have prior experience working on similar commercial PV projects, including system sizing, production and shading analysis, electrical design, and permit-ready documentation aligned with NEC and AHJ requirements. I will use PVsyst and AutoCAD for accurate simulation and system optimization. Turnaround time: 3 days after receiving all required inputs (drawings, load data, utility bills). I’m ready to start immediately and ensure a professional, high-quality submission.
$400 USD in 3 days
0.3
0.3

Hi, I hope you are doing well. I can help with your 100 kW rooftop PV array design and deliver a complete, code-compliant solar package ready for permit submission and utility interconnection in the US. With 7+ years of experience in Electrical Engineering, solar PV design, IoT, Embedded Systems, and Energy Management Systems, I have strong expertise in commercial rooftop solar projects. I have worked on PV system sizing, inverter and string design, single-line diagrams, cable schedules, protection calculations, roof layouts, structural coordination, and utility-compliant documentation. I am familiar with NEC standards, AHJ permit requirements, and utility interconnection packages prepared for PE review and stamping. I use Helioscope, PVsyst, AutoCAD Electrical, and other industry-standard tools for shading analysis, production estimates, and permit set preparation. I can provide SLDs, BOM, roof layout, conduit schedules, utility package, and annual generation reports with clear design justification. I am an Engineer by education and also hold a Master’s in Software Engineering. I’d be happy to share similar project examples, turnaround time, and a fixed-price quote. Best regards, Hasan Askari
$500 USD in 7 days
0.0
0.0

Hi, As an Aerospace Engineer with a professional background in high-fidelity mechanical design, I specialize in engineering production-ready systems that adhere to the most rigorous regulatory standards. Why My Engineering Fits This Scope - Drawing on my work with aluminum spaceframes and composite monocoques, I have a deep understanding of load-path analysis and torsional stiffness. - I am highly proficient in the MATLAB/Simulink and Python engineering stacks, which I utilize to model complex physical systems. - My experience managing technical reliability and documentation for mission-critical aerospace components means I am meticulous about code compliance. Proposed Plan - Utilizing your as-built drawings and load data to run HelioScope/PVsyst simulations for optimal module placement and projected annual generation. - Developing the SLD, cable schedules, and inverter stringing layouts according to NEC 690 and NEC 705 standards. - Designing the layout and attachment details for common US racking hardware, ensuring the roof’s structural integrity is maintained. - Providing a complete Bill of Materials with European and US-standard commercial components and a brief narrative explaining the design's sustainability impact. When would you like to share the as-built roof drawings and utility bills so I can begin the initial shade simulation? Best regards, Batuhan Akkova
$500 USD in 14 days
0.0
0.0

As a Team Leader Electrical Engineer and Team Leader with 11 years of expertise in technical office work and electrical design, I can provide a comprehensive, NEC-compliant design package for your 100kW PV system. I specialize in developing detailed Single-Line Diagrams (SLDs), protection calculations, and cable schedules ready for PE stamping. I am proficient in AutoCAD for layout design and can use PVsyst/Helioscope for production analysis. I will ensure the permit set and utility interconnection package meet all AHJ requirements with a focus on safety and code compliance."
$500 USD in 7 days
0.0
0.0

I’m a solar engineer with experience in designing commercial and hybrid PV systems, and I’d be glad to support your 100 kW rooftop project. I can deliver a complete, code-compliant design package including: PV system sizing (strings & inverter selection) with PVsyst and detailed production analysis Single-line diagrams, cable sizing, and protection calculations aligned with NEC standards Optimized roof layout with panel placement and structural considerations Bill of materials with reliable, industry-grade equipment Permit-ready documentation for AHJ submission and utility interconnection A clear report explaining design choices and expected annual energy output I regularly work with AutoCAD, PVsyst, and advanced Excel tools for accurate and efficient design. While my experience is international, I am familiar with US NEC requirements and can ensure compliance, including coordination with a US PE if stamping is required.
$500 USD in 4 days
0.0
0.0

I can deliver a complete, permit-ready design package for your 100 kW rooftop PV system, fully compliant with NEC and US utility interconnection requirements. I will provide: System sizing & production analysis (PVsyst) Single-line diagrams & electrical calculations Detailed rooftop layout with structural considerations Bill of Materials Permit set + interconnection package Brief technical report with annual energy yield ⏱️ Delivery: 5 days ⚙️ Tools: PVsyst, AutoCAD I’m ready to start once drawings and load data are shared.
$250 USD in 5 days
0.0
0.0

Hello, I can deliver a complete 100 kW rooftop PV design package fully compliant with the National Electrical Code and typical AHJ/utility requirements in the United States. My scope will include: • System sizing, string design & production simulation (PVsyst/Helioscope) • Detailed roof layout with module placement and fire-compliant setbacks • NEC-compliant single-line diagram (SLD) with protection and grounding • Conduit, cable sizing & voltage drop calculations • Bill of Materials (modules, inverters, racking, BOS) • Permit-ready drawing set for AHJ submission • Utility interconnection package I will ensure the design is accurate, practical, and ready for engineering review/PE stamp coordination if required. Timeline: 8–10 working days Bid Price: $500 (introductory pricing for first collaboration) I can also share sample layouts and SLD formats similar to US commercial projects. Looking forward to working with you. Best regards, Gaurav Patar
$500 USD in 8 days
0.0
0.0

Jawa Timur, Indonesia
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