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DESIGNING TOMORROW'S POWER® | EMAIL: INFO@CASTILLOPE.COM 

DESIGNING TOMORROW'S POWER®

Award-winning, full-service utility & residential solar engineering

EST.1998

INDUSTRY LEADING

SOLAR AND ENERGY STORAGE ENGINEERING

Our Clients and Project Owners

Our premier, repeat clients continue to trust us to minimize project costs and maximize project value.

OUR SERVICES

AND EXPERIENCE

With 25+ years of experience and over 1 GW+ of solar and energy storage projects to date, Castillo Engineering is one of the most experienced solar and energy storage engineering firms in the United States. Castillo Engineering delivers expertise in full service (electrical, structural, medium & high voltage) solar and energy storage design, engineering, and consulting services for projects ranging from residential to utility-scale. From 5 kW to 500 MW, we utilize our proprietary site-specific design optimization process to reduce project costs, accelerate your installations & maximize project profitability - all while maintaining the highest quality.

25+

Years of Solar

Experience

20+

Senior Level

Solar Engineers

50

States with PE License

1 GW+

Successful PV

Projects Completed

Our clients permit faster with Castillo Engineering

We leverage decades of Utility and AHJ relationships to deliver the fastest, first-time approved, interconnections and permits in the solar industry.

Residential Next Day Turnaround

+

Our design process was developed in conjunction with our customers’ feedback, resulting in an extremely quick, next day, turnaround time. We also standardize your plans to streamline your installation process, shortening your project duration, which increases profitability.

Consistently High Accuracy

+

99.9% first time permit approval rating – Our intimate relationships with each Building Department nationwide provides us with a deep understanding of the approval process in every jurisdiction. These relationships, combined with the fact that we document and track every building departments’ unique code requirements, have resulted in a consistently high 99.9% first time permit approval rating.

Scale and Grow Your Business

+

Our business acumen, forecasting skills, and proprietary processes help you scale your business as your sales grow. We can also assist you with expanding into new markets throughout the U.S. with the same next day turnaround time and 99.9% first time permit approval rating.

Lowest Bill

of Material

+

Equipment

Expertise

+

Live Technical & Customer Support

+

Our solar design expertise results in a minimum bill of materials, eliminating wastage and cost overruns that drain the profitability of your project, without compromising quality. As a result, you finish your projects faster, with less material and more profit.

Due to the fact that our extensive customer base across the country utilizes a wide variety of products, alongside our strong manufacturer relationships that have been developed over the past 25+ years, we are always apprised of the latest products being introduced to the market. As a result, our engineers offer expert equipment selection recommendations to ensure that each product best suits your project needs, so that you permit quickly, install easily, and maximize project value.

Every Castillo client has a dedicated Technical Support Engineer to assist you with any design changes, provide status updates, and expert – during construction – technical phone support so you can complete your projects on-time, under budget, and with the quality your clients’ demand. No more waiting for returned emails or phone calls. We get you the information and assistance you need when you need it most.

Contact Us

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Featured Projects

Over 1 GW+ of projects completed on time and on budget throughout North America since 1998.

30,000+

Projects

210+

MW

Residential

With over two decades of experience and 30,000+ residential projects completed, we are a leading national solar and energy storage design firm. Our proprietary site-specific solar design process speeds up your installs while reducing your costs, coupled with a dedicated Technical Support Engineer for each client, Castillo provides everything you need to make your projects more profitable.

300+

Projects

600+

MW

Utility-Scale

Our 25+ years of solar and energy storage engineering experience, ability to minimize bills of materials, fast turnaround times, and established industry relationships have enabled us to emerge as the leading utility-scale solar and energy storage design and engineering firm in the U.S.

Our Engineering Services

We leverage our expertise in full service (electrical, structural, medium & high voltage) solar and energy storage design, engineering, and consulting services to de-risk projects and ensure the highest return on investment.

Our Clients and Project Owners

Our premier, repeat clients continue to trust us to minimize project costs and maximize project value.

Our Clients and Project Owners

Our premier, repeat clients continue to trust us to minimize project costs and maximize project value.