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Castillo Engineering Named to Inc. 5000 List of Fastest-Growing Companies for Third Consecutive Year

Company achieves 381 percent growth over 3-year period

Castillo Engineering again made Inc. 5000’s list due to its exceptional multi-year revenue growth.

Maitland, FL, September 5, 2023 - Castillo Engineering has been named to Inc. 5000’s prestigious list of fastest-growing companies in America for the third consecutive year. The Inc. 5000 list takes a data-driven approach to determine and showcase the most successful companies within the dynamic landscape of independent businesses. Castillo Engineering made Inc. 5000’s list this year due to its extraordinary 3-year revenue growth of 381 percent, which is 162 percent higher than the median growth of all ranked companies.

“We are thrilled to have made Inc. 5000’s exclusive list for a third year in a row,” said Christopher Castillo, CEO at Castillo Engineering. “Without a doubt, we would not have been able to achieve continued record growth without our highly skilled and passionate team as well as our long-term customers and partners, who continue to select us due to our nearly three decades of design and engineering experience.”

First introduced in 1982, the Inc. 5000 list of the fastest-growing, privately held companies in the United States has become a hallmark of entrepreneurial success in the country. Companies on the 2023 Inc. 5000 list have been ranked according to percentage revenue growth from 2019 to 2022. Notable companies that have been named to the Inc. 5000 list include Microsoft, Patagonia, Zappos, Oracle, Intuit, Pandora & Zappos.

"Running a business has only gotten harder since the end of the pandemic," says Inc. Editor-in-Chief Scott Omelianuk. "To make the Inc. 5000 with the fast growth that it requires is truly an accomplishment. Inc. is thrilled to honor the companies that are building our future."

The Inc. 5000 class of 2023 represents companies that have driven tremendous revenue growth while also navigating inflationary pressure, a tight employment market & the rising costs of capital. In total, this year’s Inc. 5000 companies have added nearly 1.2 million jobs to the economy over the past three years, despite unprecedented challenges.

A conference and gala will be held for the Inc. 5000 list honorees in San Antonio, Texas from October 31st through September 2nd. Complete results of the Inc. 5000 list, including company profiles and an interactive database that can be sorted by industry, region, and other criteria, can be found at

About Castillo Engineering

Founded in 1998, Castillo Engineering is a leading design and engineering firm that delivers expertise in full service solar and energy storage design, engineering, and consulting services to developers, EPC contractors and utility companies. Castillo Engineering’s services cover electrical, structural, medium and high voltage for residential and utility-scale projects ranging from 5 kW to 500 MW. The firm’s experience completing 1.5 GW of solar and energy storage projects and unmatched expertise has made it the go-to solar engineering firm for utility-scale ground mount system construction documents for the industry’s top EPCs and developers. The firm was ranked by Inc 5000 three years in a row as one of the fastest growing companies in the U.S., as well as the 9th fastest growing engineering firm in the nation. Castillo Engineering is based in Maitland, Florida, and is licensed in all 50 U.S. states and Puerto Rico. Learn more


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