Founded in 1998, Castillo Engineering is a premier full-service design and engineering firm specializing in utility-scale solar and energy storage systems. With over 25 years of experience, the firm has successfully completed more than 1,500 solar projects, establishing itself as a trusted provider for developers, EPC contractors, and utility companies across the United States. Castillo Engineering excels in a wide array of services, including electrical, structural, civil, and substation design, as well as project management and consulting.
Recognized as one of the fastest growing engineering firms in the U.S. by Inc. 5000 for three consecutive years, Castillo Engineering has earned its reputation through a commitment to quality and innovation. The company operates under its mission of "Solar Designed Right for a Better Tomorrow," emphasizing a holistic approach to design and engineering that optimizes projects for performance and cost-effectiveness. Licensed in all 50 states, the District of Columbia, and Puerto Rico, Castillo Engineering provides its services nationwide, demonstrating a dedication to meeting the diverse needs of its clients.
With a strong focus on collaboration and client support, Castillo Engineering’s proprietary site-specific solar design process accelerates installations and minimizes expenses. The firm’s passion for improvement and dedication to clarity ensures that projects are de-risked and positioned for the highest return on investment. As a leader in the solar engineering field, Castillo Engineering continues to set the standard for excellence in utility-scale solar projects.
