Skip to main content



Founded in 2013, CleanBay Renewables is a leading cleantech and innovative renewables company on a mission to meaningfully reduce greenhouse gas emissions using proven technology and a novel proprietary process.


Our vision is to enable a truly circular economy that processes agricultural waste to harness its energy potential and facilitate sustainable food production.
Our Team


Thomas Spangler

Thomas Spangler
Executive Chairman

  • Co-founder of CleanBay Renewables
  • Principal at Velos and Spangler Strategic Advisors
  • Former senior Department of Defense official and electrical engineer 
  • Entrepreneur, startup investor and advisor to multiple defense, aerospace and investment concerns 
Donal Buckley

Donal Buckley
Chief Executive Officer

  • Over 20 years of international corporate experience (14 years in biomass) 
  • Prior CEO experience in AD 
  • Completed an executive education program at Stanford GSB 
  • Biomass industry veteran with scientific background 
  • International project finance experience

Jason Levine

Jason Levine
Chief Business Officer & GC


  • Co-founder of CleanBay Renewables
  • Over 30 years of finance and growth stage operating experience including roles of CEO, CFO, General Counsel and corporate development executive
  • Held senior positions a Boston University’s Community Technology Fund, FBR, Tucker Anthony and Merrill Lynch 
Kevin Hill

Kevin Hill
Chief Financial Officer

  • Over 20 years of commercial real estate private equity and investment management experience with companies, including:
    • Continental Reality Corporation 
    • Javelin 19 Investments
    • The Meridian Group 
    • New York Life Investment Management 

Kristi Shaw

Dr. Kristi Shaw
Chief Environmental Strategist

  • Over 13 years of research experience in organizations like the Maryland Department of Natural Resources
  • Completed her Ph.D. in a microbial ecology laboratory, where she investigated bacterial community composition in collaboration with a NOAA Assessment of Chesapeake Bay sub-estuaries 

Shawn Freitas

Dr. Shawn Freitas
Chief Technology Officer


  • Professional experience in a variety of organizations related to petroleum and renewable fuel/chemical production 
  • Ex TRI, owner of the largest Fischer Tropsch biorefinery in North America 
  • Considerable experience with lab and commercial-scale biomass and waste conversion technologies and analysis
Bryan Train

Bryan Train
Chief Integration Officer

  • Over 20 years of international corporate and start-up experience 
  • Led international business development for Globomass 
  • Managing Director of the Worsham Group 
  • Co-founder and director of Asha Zuri Participacoes
  • Executive positions at Coloplast, GMAC and DuPont de Nemours

Courtney Spangler

Courtney Spangler
Director of Government Affairs

  • Over 20 years of experience advising on environmental stewardship and economic development matters
  • Prior experience as a land use expert for development portfolios and has advised on communication strategy and marketing

Alan Gilbert

Alan Gilbert
Chief Operations Officer

  • More than 20 years of international corporate experience (14 years in renewables and biomass)
  • Prior senior management in the agri-food sector
  • Successfully restructured a Latvian biomass business and established the AD division, which became one of the top AD solutions providers into the UK.

Christi Hudgins

Christi Hudgins
Director of Human Resources

  • Over 14 years human resources, communications and project management experience (7 years with start-up companies)
  • Specializes in aerospace and clean energy sectors
  • Held positions at NOAA and NASA Satellite Launch Operation
  • Society of Human Resource Management – Certified Professional (SHRM-CP)
William Taylor

William Taylor
Director of Construction Management

  • Over 40 years of experience in construction, specializing in the infrastructure needed for site development
  • Operates according to OSHA regulations and has earned an “Outstanding” rating during inspections of jobs
  • Certified in Erosion and Sediment Control