Willdan Group has completed its previously announced $285 million cash acquisition of Mantis Innovation, expanding its energy and infrastructure capabilities across commercial and industrial markets.
The transaction closed after the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act expired and customary closing conditions were satisfied.
Mantis Innovation, headquartered in Houston, provides building controls, energy efficiency, energy advisory, and facility management solutions to commercial and industrial customers.
Its customer base spans manufacturing, food and beverage, healthcare, data centers, and other energy-intensive industries.
The acquisition is designed to strengthen Willdan’s ability to help customers manage rising electricity demand, reduce energy consumption, control costs, and improve operational reliability.
Willdan said electricity demand is rising across the economy due to industrial expansion, electrification, and new digital infrastructure.
By combining with Mantis, Willdan expects to broaden the range of services it can offer customers looking to optimize energy usage and make more efficient use of existing grid capacity.
The transaction also adds Mantis’ energy procurement and facility-management capabilities to Willdan’s existing portfolio of energy planning, analytics, consulting, software, public finance, engineering, and program implementation services.
Willdan serves utilities, state and local governments, and commercial customers across the U.S. and Canada.
The company plans to provide additional details on the transaction and updated financial guidance during its third-quarter earnings conference call scheduled for November 5, 2026.
Jefferies served as exclusive financial advisor to Mantis.
The $285 million acquisition gives Willdan a larger presence in commercial and industrial energy services at a time when customers across multiple sectors are facing higher electricity demand and more complex facility-management needs.
Mantis’ exposure to data centers and other energy-intensive industries could also provide Willdan with additional opportunities as customers seek ways to manage load growth and infrastructure constraints.
The combination is expected to bring together Willdan’s technical and energy expertise with Mantis’ capabilities in building controls, energy efficiency, advisory services, and facility management.
KEY QUOTES:
“We welcome the entire Mantis team to Willdan. Electricity demand is growing across the economy, driven by industrial expansion, electrification, and new digital infrastructure.”
Mike Bieber, CEO Of Willdan
“Today marks an exciting new chapter for our team and our clients. We have built Mantis around helping customers solve complex energy and facility challenges, and joining Willdan expands the opportunities available to both our people and the clients we serve.”
Darrell Whitley, CEO Of Mantis Innovation
