Our professional staff includes Mechanical Engineers (ME), Professional Engineers (PE), Certified Energy Managers (CEM), and Facilities Specialists. HES has extensive experience and β¦ Our professional staff includes Mechanical Engineers (ME), Professional Engineers (PE), Certified Energy Managers (CEM), and Facilities Specialists. HES has extensive experience and expertise in all aspects of energy management, including energy efficiency analysis, energy master planning, alternative energy sources, and building commissioning. Mission Statement: Energy consultation done right. Our focus is to provide practical solutions for every unique challenges. All projects (large or small) are treated with the same level of professionalism, because we understand and care about the real-life repercussion of each.