Structural & Electrical Engineering
BIM & 3D Modeling
EV Charging Infrastructure



Structural & Electrical Engineering
BIM & 3D Modeling
EV Charging Infrastructure
Dedicated Resident Engineers
Seamless Workflow Integration
Employee Exchange Programs
Installation-Trained Designers
Zero Construction-Phase Errors
Practical Site Logic
At RS Solar CAD Group, we are committed to advancing renewable energy through precise and reliable solar design services. With a team of skilled engineers and CAD professionals, we deliver high-quality, permit-ready solar plan sets with fast turnaround times and strong approval success rates.
We partner with solar installers, EPC companies, vendors, financing partners, manufacturers, suppliers, and mounting & racking companies across the United States and Canada to provide accurate and compliant solar design solutions.
We also provides solar installation services across India, serving customers in 28 states and 3 Union Territories through our network of experienced installation partners and professionals.
RS Solar CAD Group provides an integrated outsourcing model supporting solar installers, EPCs, and engineering firms across the U.S. and Canada. We act as a captive offshore extension of your in-house team, ensuring high-quality, scalable execution aligned with your standards.
Reliable Solar CAD Services with Fast Turnaround and Precision
Delivering fast, accurate solar permit designs with high approval rates, helping solar businesses scale efficiently across the US and Canada.
We already work with EPC companies, solar installers, racking providers, and manufacturers, which means we understand the industry’s workflows, software platforms, compliance requirements, and project expectations. Instead of spending valuable time explaining processes from scratch, you get a reliable partner.
Our Typical Turnaround Times (TAT):
Every plan set is built with AHJ expectations in mind. Before delivery, our team conducts a thorough quality-control process that includes database verification, design reviews, error checks, load and electrical calculations, system reevaluation, and compliance validation.
This attention to detail helps reduce back-and-forth communication with AHJs and utilities while maintaining a high first-time approval rate across multiple states. Our goal is to deliver accurate, permit-ready plan sets that streamline the approval process and keep projects moving forward without unnecessary delays.
This is not template-based work. Our team includes experienced solar designers and engineers who understand real project challenges—roof constraints, load calculations, system sizing, and layout optimization. Our team also visits project sites to assess actual conditions and develop accurate, build-ready designs based on real-world requirements. We coordinate closely with installers and stakeholders to ensure smooth execution, compliance, and long-term system performance. You get practical, installation-ready solutions, not just drawings that look good on paper.
Hiring and training an in-house design team is expensive and time-consuming. We act as your extended team, delivering consistent quality at a predictable cost. There’s no need to hire designers, manage staff, provide additional office space, handle overtime concerns, or deal with appraisals, bonuses, and employee retention challenges. We take care of everything for you. Whether you have 5 projects or 500, you can scale seamlessly without increasing internal overhead or compromising turnaround times.
Solar projects don’t wait—and neither do we. Our team operates 24/7, 365 days a year, including weekends and holidays. While your US team is offline, we’re actively working on your projects, so you wake up to completed plans ready for review, permitting, or installation. There is no downtime, no delays, and no waiting for the next business day. Day or night, our continuous workflow ensures faster turnaround times, increased productivity, and uninterrupted support for your growing solar business. Backed by a well-structured management team and highly educated project managers, we maintain seamless project coordination at every stage.
We already collaborate with EPC companies, solar installers, racking providers, manufacturers, financing partners, equipment suppliers, solar proposal software companies, and industry vendors across the solar ecosystem. As a result, we understand the unique workflows, tools, standards, and expectations of each stakeholder. Rather than training a new team on your processes, you get an experienced partner who can plug into your operations from day one, reducing onboarding time and enabling faster, smoother project execution.
Built for Speed. Designed for Approvals. Trusted by Solar Professionals.
Built for Speed. Designed for Approvals. Trusted by Solar Professionals.
PM Surya Ghar Muft Bijli Yojana (India)
Government Subsidy for Residential Rooftop Solar
The PM Surya Ghar Muft Bijli Yojana is
India’s largest rooftop solar initiative, helping homeowners install solar
systems with attractive government subsidies.
Benefits for Homeowners:
PM-KUSUM Yojana (India)
Solar Energy for Farmers, Landowners & Rural Communities
PM-KUSUM empowers farmers, landowners, FPOs, Panchayats, and cooperatives through solar power plants, standalone solar pumps, and solarization of existing grid-connected pumps.
Benefits for Homeowners:
Your Feedback Matters

“Working with Rs Group on my solar PV planset was a fantastic experience! Their professionalism, attention to detail, and visually appealing designs really stood out. They were quick to respond and also very polite and proactive, making the process seamless and enjoyable 😊. I’d highly recommend them for your design advice needs; their value is unmatched! “

“Rs Group did an incredible job with their design advice. Their professionalism shone through in the quality of their work, and their proactive communication made collaboration a breeze. They truly went above and beyond – highly recommend!

“RS Solar CAD Group has been an outstanding partner for our solar projects. Their permit plans are detailed, accurate, and always delivered on schedule. The team’s communication and professionalism make every project run smoothly. Highly recommended!”

“RS group know exactly what they do they know their systems and have an amazing inside into how they work pushed up they were able to offer suggestions and really bring the project to a great point recommended”

“RS Solar CAD Group. Everything is made very easy and the project turned out wonderful. When a revision was needed the changes were made quickly with no complaints from us. We will definitely use this team on our next project. Our last project was designed so nicely with all of the information needed to get a county permit approval when we had been struggling to get approval for months. Highly recommend!”
We design based on exact AHJ requirements and perform strict QA checks before delivery.
Every jurisdiction has different expectations, and most rejections happen due to small compliance gaps. Our team follows AHJ-specific guidelines, NEC codes, and utility requirements from the beginning. Before delivery, each plan goes through an internal quality check where we verify layouts, labels, calculations, and documentation. This reduces back-and-forth and helps achieve a consistently high first-time approval rate.
Basic project details like site info, system size, and equipment are enough to begin.
To start quickly, we typically need the site address, utility bill, system size (or target offset), and any preferred equipment. If you have site photos, roof dimensions, or drone images, that helps improve accuracy. Even if some details are missing, our team can guide you step-by-step and still initiate the design process without delays.
Yes, we are built to support high-volume solar businesses.
Our team structure is designed for scalability. Whether you’re handling a few projects per week or large daily volumes, we can manage your workload without affecting turnaround time. Many EPCs and installers use us as their extended design team, allowing them to grow without hiring and training in-house designers.
We have a fast-track workflow for urgent and priority projects.
We understand that some projects are time-sensitive—especially when permits or installations are scheduled. For urgent cases, we assign priority resources and follow an accelerated workflow. Depending on project complexity, we can deliver same-day or overnight designs, helping you meet tight deadlines without compromising quality.
We quickly revise designs based on AHJ feedback at no hassle.
While rejections are rare, they can happen due to changing AHJ expectations. In such cases, we review the comments, update the drawings accordingly, and resubmit quickly. Our goal is to minimize delays and keep your project moving. We stay aligned with AHJ feedback to avoid repeated issues in future submissions.
Yes, we align with your design format, branding, and workflow.
Every company has its own way of working—title blocks, equipment preferences, design styles, and documentation formats. We adapt to your internal standards so that every plan set looks consistent with your brand. This is especially useful for EPCs and installers managing multiple teams or clients.
We follow region-specific codes and maintain updated compliance knowledge.
AHJ requirements vary widely across states and cities. Our team keeps track of these differences and applies the correct standards for each project. We continuously update our internal processes based on new codes, ensuring that your designs remain compliant no matter where the project is located.
Yes, we design using your selected modules, inverters, and systems.
We don’t force standard configurations. Whether you use specific brands or unique system setups, we design accordingly. Our team ensures compatibility between components, proper system sizing, and compliance with manufacturer and electrical guidelines.
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Partner with world-class engineers for your solar & roofing needs.