Willdan Group, Inc., including its various subsidiaries, offers a wide array of expert, technical, and advisory services, primarily concentrating its operations within the United States. The company's business activities are structured into two main divisions: Energy, and Engineering and Consulting. The Energy segment delivers a comprehensive suite of services, which includes detailed audits and assessments, the creation of strategic programs, master planning, efforts to reduce energy demand, optimization of electrical grids, benchmarking studies, engineering design, supervision of construction, performance-based contracting, installation services, innovative financing solutions, and thorough measurement and verification.