The CH Four Team

​Benjamin Strehler, M.Sc. – Benjamin is the CEO of CH Four Biogas and is one of the founders of food-waste AD in North America. He arrived from Switzerland in the early 2000’s with ideas and know-how from Europe, and adapted practical, scaled systems to develop in North America. The result has been successful AD systems installed from coast-to-coast in the northern and southern hemispheres. Benjamin holds a M.Sc. in Environmental Engineering from ETH, Zurich.

Ethan Werner, MBA/M.Sc. –  Ethan joined CH Four Biogas in early 2011 and began working on project development and operational management on farm-based municipal and industrial AD projects. In this capacity he developed numerous working relationships with government, NGO’s private sector industry to enhance and progress the industry throughout North America. He is now a partner in CH Four and has grown the company from a small engineering firm into a family of companies providing a full suite of services to digester owners, developers and operators. Ethan received a dual MBA and M.Sc in Sustainable Management and Operations from the University of Kent at Canterbury.

John Brewer, CET – John is the Senior Vice President of Engineering at CH Four Biogas. He has over a decade of experience leading the engineering design and construction of CH Four Biogas plants across Canada, the US and South America. He is one of the authors of the Canadian Biogas Gas Code (B149.6). John is a CET member of OACETT and holds a degree in Engineering and Environmental Technology from Algonquin College. He is also a member of the CSA and TSSA.

Claire Allen, P.Eng. – Claire is the Vice President of Operations at CH Four Biogas. She has been with the company since 2008. Claire oversees the permitting, start-up and operations of our biogas plants. She is a P.Eng. member of the PEO and Engineers and Geoscientists BC and holds a degree in Chemical Engineering from the University of Waterloo. She is a former board member of the Canadian Biogas Association.

Niloofar Abdehagh, PhD, P.Eng, PMP – Niloofar joined CH Four Biogas in 2016 and is responsible for the strategic and overall operations of R&D department of the company. She has been responsible for the formation and operation of the company’s R&D department and overseen CH Four’s technology development and technology positioning. Niloofar has also been appointed as Adjunct Professor at University of Ottawa leading a research group of undergrad and grad students in addition to lecturing on anaerobic digestion and biogas topic. Niloofar holds a PhD degree from University of Ottawa in Chemical and Biological Engineering and has a wide range of experience in biofuel and biogas industry.

Dave Lapointe, VP of Eng. – Dave is Vice President of Engineering at CH Four Biogas. He has been with the company since 2017 and is responsible for the design and construction of our biogas plants. He works closely with the engineering team to produce construction plans, and oversees the construction of the projects until commissioning. He holds a degree in Mechanical Engineering from Concordia University.

Julien Chartrand, CET – Julien is the lead CAD and Design Technologist at CH Four Biogas. He has been with the company since 2018 and is responsible for the production of engineering drawings. He is a CET member of OACETT and holds an advanced diploma in Mechanical Engineering Technology from Algonquin College.