We have a staff of over 50 full-time employees, including LEED Accredited Professionals, Certified Energy Managers (CEM), Energy Reduction Analysts, Commissioning Agents (Cx), personnel Certified in Plumbing Engineering (CIPE), and Lighting Certified (LC) staff.

60% of GLHN's income is generated in the higher educational sector. The firm has worked at over two dozen campuses nationwide and is dedicated to helping universities reduce their net greenhouse gas emmissions and meet their Presidents Climate Commitment.

30% of the firm's revenue is earned by governmental contracts, primarily the Department of Veterans Affairs, for which GLHN has been working continuously since 1975, performing services at over 100 VA medical centers nationwide. Other governmental contracts include numerous counties and municipalities throughout Arizona.