Castillo Engineering develops automated solar engineering letter service



Castillo Engineering has launched, a service that can fully automate structural letters, professional engineer (PE) stamps and post-installation letters for residential solar installation companies in all 50 U.S. states as well as overseas. The company’s automation, which includes a range of application programming interface (API) integrations, is backed by over 25 years of structural design and engineering experience in residential solar.

Credit: Solar Letters

Solar Letters will also incorporate artificial intelligence to further reduce the time and costs associated with solar letters and PE stamps. Solar Letters’ experience combined with its advanced technology has enabled it the capacity to generate over 100,000 solar letters per month, allowing residential solar installers to complete more projects in less time.

“The Solar Letters platform is a game-changer for LGCY,” said Ben Ogden, Manager, Design and Engineering, LGCY Power. “It has simplified the structural and electrical engineering process and increased our turn times on stamped projects.”

The service is trying to identify inefficiencies in letters and PE stamps that engineers have previously had to complete manually. Solar Letters pools from a database of more than 40,000 authorities having jurisdiction (AHJs) and associated codes.

“We are very excited to launch in response to the high demand for residential solar letters and PE stamps we are seeing globally,” said Christopher Castillo, CEO of Solar Letters. “We look forward to providing the same elite customer service experience for clients as we do through Castillo Engineering. Helping solar installers drastically cut soft costs and mitigate project risks are necessary to ultimately enable solar energy to proliferate across the globe.”

The company is currently preparing for a round of investments to both further improve its automation and AI integration to provide additional quality control through its platform.

News item from Solar Letters


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