Willdan Group, Inc. engages in the provision of technical and consulting services. It operates through the following segments: Energy and Engineering and Consulting. The Energy segment offers energy and sustainability consulting services to utilities, public agencies and private industry. The Engineering and Consulting segment operates through Willdan Engineering, Willdan Infrastructure, Public Agency Resources, Willdan Financial Services and Willdan Homeland Solutions. The company was founded in May 1964 and is headquartered in Anaheim, CA.