25 years,
Building scientist, he holds the LEED AP, HERS Rater, BPI Buildng Analyst, BPI Envelope Specialsit, NAHB Green Building Professional, NAHB Verifier, RESNET Green Verifier, Green Plumber Certification and BROKER/GRI/EcoBroker designations. He is a frequent writer and speaker on energy efficiency and renewable energy issues.
BS Economics, Clemson University, Certificate in Non-profit Management, Duke University