DanDan Thayer – President

Extensive experience in the design and construction industry for over thirty years as a Mechanical Engineer in the areas of air conditioning, ventilation, heating, refrigeration, medical gas, and building automated controls.


Steven Thing – CFO & HR Manager

Steven was born and educated in Maine.  He has a degree in accounting, a law degree and a master of business administration degree.  He is licensed as a Certified Public Accountant and is an inactive attorney.  For much of his career, he provided accounting and consulting services, including ‘expert witness’ engagements and service as a court-appointed trustee.  About ten years ago, he discontinued his professional practice to accept a position as Chief Financial Officer of a consulting client, high-technology manufacturing firm in the field of neuroscience and neurosurgery.  He retired from that position in 2010.  He joined Thayer Corporation in 2012 as our CFO and Human Resources Manager.  Steven lives in Portland with his wife Claudette.


Mike WentworthMike Wentworth - General Manager, Energy Services Group

Michael is responsible for creating the organizational structure for the ESG personnel, day-to-day oversight of project management, developing and delivering a sales plan and building partnerships with suppliers of the technical and financial products that help us deliver funded energy efficiency solutions to our customers.  Mike has worked in the HVAC and building automation industry for over 20 years.