ANAHEIM, Calif.–(BUSINESS WIRE)—- $WLDN–Willdan Group, Inc. (NASDAQ: WLDN) announced today that on May 4, it acquired 100% of the membership interests of Burton Energy Group, LLC (Burton), an energy management consulting and solutions provider headquartered near Atlanta, Georgia. Burton provides cost-effective, data-driven energy management, energy procurement, energy efficiency, and turnkey asset replacement services to multi-site commercial clients, which include monitoring over 60,000 client sites