Engineering support built for permit approval, revision cycles, and field handoff.

“Anthony and the GBI team have been an exceptional partner for our engineering and design needs. Their PV plans and EE/PE stamping are consistently accurate, and they stay proactive on the details that matter, from Tesla and SPAN communication checks to exact equipment specs on complex commercial jobs. The process is easy to manage through their streamlined project portal, clear monthly invoicing, and responsive communication. For installers that need a reliable and honest engineering partner, I highly recommend GBI.”

“Working with Anthony Gianfrancesco and his team has been a game-changer for our operations. As a high-volume installer, we need an engineering partner who is technically sharp and current on utility requirements like Xcel Energy and United Power. Anthony consistently supports everything from standard residential plan sets to complex smart inverter and battery configurations, including Canadian Solar EP Cube 2.0 systems. He is proactive with AHJ revisions, responsive under install-schedule pressure, and dependable in getting projects to PTO efficiently. If you need full-service engineering support from PE stamps through utility application processing, I highly recommend Anthony and his team.”

“We've worked with Anthony and his team on numerous complex projects ranging from solar to EV charging and off-grid installations. Their engineering is consistently precise, responsive, and technically sharp - exactly what's needed when accuracy and compliance matter. They are a reliable partner we trust on high-level electrical and renewable energy projects.”

“Our long-standing partnership with Anthony has been instrumental in navigating complex solar, storage, and utility interconnection projects. His team is highly responsive and detail-oriented, especially when managing AHJ revisions, single-line corrections, and intricate submittals. They are a dependable and knowledgeable partner in renewable energy design and compliance.”

“As a DIY'er, I can't thank GBI's engineering team enough for their incredible support throughout my solar project in Florida. They handled every technical challenge and guided me through all the permitting and utility hoops with professionalism and patience. Thanks to their expertise, my system is running perfectly - I highly recommend them to anyone who wants an engineer who truly cares about their clients.”

“Working with Anthony and his team has been fantastic. Their professionalism and deep knowledge of the solar permitting process consistently impress me. They're reliable, deliver high-quality work every time, and are a trusted resource in the industry. I'll continue sending referrals their way.”

“I've worked with Anthony for years, and I wouldn't trust anyone else with my business. He's not just a service provider - he's a true partner who genuinely cares about my success. The work is always top-tier, and his dedication and character are unmatched.”

“I'm working with Anthony on a solar array installation for a client and highly recommend him. I trust him completely with the structural and electrical stamping required for the project. His expertise and innovative thinking have made the process simple and straightforward.”