About Us

IR1 Group has an experienced management team with a proven track record. IR1 principals have developed, financed, constructed and/or operated 10 “first-gen” biofuels plants. These plants span five process technologies, with a total of over $650 million of construction cost and 390 million gallons of installed capacity. The RRB management team has a total of 50+ years of combined experience in the biofuels industry and an additional 40+ years in related industries.

Terry Kulesa

 Co-founder and CEO of  IR1 Group. Terry handles business development, team management and construction and operations services. His previous experience included the design, construction and operation of five ethanol plants totaling over $500 million of construction and over $500 million of annual revenues.  Terry has over 23 years experience in managing operations.  He holds a Bachelors Degree in Ag-Biosciences (Dairy Manufacturing) from South Dakota State University and an MBA from the University of Minnesota. 

Jeff Manternach

Co-founder and CFO of IR1 Group. Jeff handles business development, financial modeling, industry valuations and project development services. Prior to IR1 Group, lead debt capital raises of $400+ million, including a $325 million project finance deal in Feb.  Jeff received his MBA and an MS in Natural Resources from the University of Michigan and his BA in Economics and Physical Anthropology from Haverford College.  

Jim Moore

Director of of Engineering/Senior Project Manager of IR1 Group. Jim’s professional career spans over 30 years of construction, engineering & operations management with an emphasis on design/build projects for the process and manufacturing industries. He possesses a demonstrated record of success in managing the P&L for projects and multi-plant programs of over US$500M in capital value and teams up to 110 design engineering and 500 construction personnel for in house and client account design build projects in multiple industries. Jim also has extensive experience in renewable energy technology and served as Senior Project Executive for a major US ethanol technology provider as well as Director of Engineering and Construction where he managed design/build efforts on four greenfield ethanol plants. Jim has a B.S. in Mechanical Engineering from Texas A&M University. 

Joe Winckler

Director of Operations/Senior Project Manager of IR1 Group. Joe leads onsite construction management, plant evaluation, plant repair and plant operations. He was previously responsible for development, construction and operations of five ethanol production plants totaling $500+ million of construction cost and $500+ million of annual revenues.  Joe has over 25 years experience in the biofuels industry.  Joe is a graduate of the Graduate US Army Non-Commissioned Officers Academy (Korea) and the Graduate Process Safety Management School (Louisville, KY). 

Mary Dinh

Project Manager at IR1 Group. Mary’s work experience encompasses both engineering and project management. Previously, Mary was a Development Engineer at UC Santa Barbara’s Mechanical Engineering Dept., where she was responsible for the design, development, and management of undergraduate lab courses and advising student design projects. While at UCSB, she founded the student chapter of Engineers Without Borders-USA and led teams of students and professionals in design and implementation of appropriate technologies in rural Peru for 8 years, including clean water systems and clean cookstoves.  Mary has a BS. and MS. in Mechanical Engineering from Purdue University and UC Berkeley, respectively, and an MBA from Colorado State University's Global Social & Sustainable Enterprise (GSSE) program. 

Sue Primsky

IR1 Groups' Controller. Sue has worked in various financial and accounting capacities in both headquarters and plant operations.  She was a Financial Analyst for the CFO at the Diocese of Bridgeport (CT) responsible for managing the accounting and allocation of self-insurance programs. Prior to joining the Diocese, Sue was the Sr. Accountant for the Corporate Controller of Roller Bearing Company of America (RBC).  Sue started her career in Accounting and Finance with the IBM Corporation where she spent 11 years in multiple locations and divisions. Sue has an MBA in Financial Management from Pace University, New York and a BS in Accounting and Economics from the State University of New York. 

Terry Freeman

Terry Freeman is Construction Manager at IR1.  His 30-year career in the construction industry includes leading Owners, Design Teams and Construction Firms through development and construction phases of major Industrial and commercial projects throughout the US. Terry’s experience includes over $700 million in Renewable Fuels Facilities, Power Plant conversions (coal to biomass), Landfill (gas to power), Solar and Wastewater Treatment Facilities. Terry is a graduate of the Carpenters Apprenticeship Program out of Southern Oregon.  

Chree Wardle

 Chree Wardle is a Senior Project Controls Manager of IR1 Group.  Chree has served various project management roles all in the Heavy Industrial Construction sector, primarily in Power, Oil & Gas, and Industrial Processes industries.  Previous roles include: Project Controls Manager (numerous $30M to $2.1B), Project Manager (numerous $20M to $150M), Project Engineer (multiplant $500M).  Project Controls is his primary focus at IR1, however, he utilizes his varied experience in Engineering, Construction Management, Procurement, and Commissioning throughout his responsibilities.  He holds a BSME from Colorado State University and is a Licensed Project Management Professional.