Job seekers aiming to become Energy Efficiency Engineers can find top salaries in major cities across the U.S. Los Angeles, California, leads with an average salary of $100,629, making it a prime location for those in the field. Chicago, Illinois, follows closely with an average salary of $97,879, while Portland, Oregon, offers $91,728 annually. Denver, Colorado, provides a competitive $82,245 on average, making these cities attractive for energy professionals.