Leading the Way in Renewable Natural Gas Production

Backed by decades of experience in dairies, anaerobic digesters, and natural gas processing and treating, and fully funded by H.I.G. Capital, Northern Biogas is the perfect partner for your RNG project.
Northern Biogas is a full service Renewable Natural Gas (RNG) producer and services provider.
// Who We Are

With decades of experience in natural gas processing and treating, dairy farm operations, and anaerobic digester construction, Northern Biogas is an industry leading Renewable Natural Gas producer, engineering designer, constructor, and operator of renewable natural gas projects. Northern Biogas expertly specializes in designing, building, owning, operating, and maintaining RNG facilities.

What We Do

Specializing in the development, design, construction, ownership, and operation of Renewable Natural Gas Facilities

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Our Team

Meet our dedicated team driving innovation in Renewable Natural Gas production and facility management.

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// What We Do


We expertly develop renewable gas facilities, focusing on sustainable and efficient energy solutions.

// What We Do


Our designs are tailored for maximum efficiency, integrating the latest in renewable gas technology.

// What We Do


We construct state-of-the-art renewable gas facilities, ensuring quality and durability in every project.

// What We Do

Own & Operate

Owning and operating our facilities, we guarantee optimal performance and long-term sustainability.

// Experience

Milestones in Renewable Energy Leadership

Trace Northern Biogas’s path of innovation and success through our key milestones. From groundbreaking project launches to significant advancements in biogas technology, each step underscores our dedication to sustainability and efficiency. Explore how our journey is shaping the future of renewable energy, one milestone at a time.


Northern Biogas is founded, with initial focus on design, construction, operation, and servicing of diary biogas anaerobic digesters

  • NB design focused on successful and proven advanced European AD’s, above ground, continuously stirred tank reactor with integrated heat and mixing
  • Serviced and rehabilitated all digester designs for dairy biogas throughout the upper Midwest United States (Indiana, Idaho, Wisconsin, Iowa, Michigan), including both CSTR’s and plug flow style systems
  • Majority of projects during this time focused on combined heat and power units generating electricity to the utility grid


Established partnership with EnTech Solutions to refurbish and operate a dairy AD project in Middleton, WI

  • Digester rehabilitations with conversion of CHP to commercial RNG production


Current management team acquired Northern Biogas

  • Focus on continuing legacy of services offerings combined with development of wholly owned, designed, constructed, and operated RNG assets


Partnered with H.I.G. Capital as equity provider for deployment of RNG energy transition

  • Continuing to focus with priority on the deployment of wholly-owned RNG production assets in the diary, landfill, and foodwaste RNG spaces


First independently developed, designed, and constructed Northern Biogas RNG production facility achieves commercial operation

  • NB design employes proven systems brought current with utilization of the best currently available technologies that allow maximization of facility performance and efficiency

Chad Griffith

General Counsel

Chad is a dynamic energy leader with over 20 years of experience in law, engineering, and business, adept at transforming legal complexities into financial gains and sustainable solutions. As General Counsel at Northern Biogas, he excels in legal strategy, focusing on maximizing ROI through various tax credits and market participations. Previously COO at CNX Resources, Chad led operations through market disruptions, achieving significant cost savings and operational efficiencies, including pioneering a real-time waterline leak detection system. He holds degrees in Physics and Computer Science from Frostburg State University, a law degree from West Virginia University, and an MBA from Carnegie Mellon University’s Tepper School of Business.

David Barry

Chief Financial Officer

David has 20 years of experience in the finance and energy sectors.

Prior to Northern Biogas, he was CFO & COO of Viking Pure Solutions, a green chemistry technology business that commercialized patent electrolysis technology. At Viking David oversaw 10x revenue growth and expanded manufacturing, service and distribution capabilities to serve customers in 30 states. Prior to Viking, David worked in the investment banking industry for 12 years, with a focus on energy, renewables and industrial technology. He has completed over $10bn of M&A and has helped clients raise over $20bn of capital, having led multiple debt and equity financings in most funding markets.

David was educated at Harvard College (BA) and the University of Chicago (MBA).

Brett Nixon

Chief Commercial Officer

Brett brings over 20 years of diverse experience in legal, finance, engineering, and natural gas sectors, with a recent focus on developing renewable natural gas opportunities from dairy, food waste, and landfills. Co-founding Trillium Energy Partners, which acquired Northern Biogas in 2021, Brett previously excelled as Vice President of Business Development at Energy Transfer, significantly expanding the company’s northeast unregulated business. His tenure at PVR Partners was instrumental in transitioning the company from coal to natural gas midstream. Earlier, Brett practiced as a finance attorney in New York, specializing in acquisition and energy project finance. He holds a mechanical engineering degree from Southern Methodist University and a law degree from Columbia Law School, with early career experience at El Paso Field Services in engineering and commercial roles.

Dave Fitch

President & COO

Dave Fitch offers over 25 years of experience in engineering design, construction, operations, and commercial development, primarily in the Appalachian basin. Before joining Northern Biogas, he co-founded Trillium Energy Partners, which acquired Northern Biogas in 2021, and earlier, Ryno Energy Partners, focusing on midstream and downstream natural gas and oil production opportunities. At MarkWest Energy Partners, L.P., Dave led the Northeast Region, overseeing the implementation of significant midstream assets in the Utica and Marcellus Shales. His tenure at Dominion Transmission, Inc. (Dominion Energy) was marked by leading engineering and construction of midstream assets. Earlier, Dave worked for Allegheny Power in facility planning and substation engineering. A U.S. Navy veteran, he served as a nuclear reactor operator on the USS Columbia (SSN-771) and holds a bachelor’s degree in electrical engineering from West Virginia University, with a professional engineering license.

Chris Akers

Chief Executive Officer

Chris is a seasoned professional with over 30 years of experience in midstream operations, construction, engineering, and finance, primarily in the Appalachian Basin. He co-founded Trillium after a transformative tenure as President and COO of Eureka Midstream, where he led significant growth in system throughput and EBITDA, turning it into a diversified operation. Before Eureka, Chris played a pivotal role in EQT Midstream’s expansion during his 13-year tenure, overseeing a team of 400+ and contributing to its evolution into a major midstream company. His earlier career includes various roles at Dominion Transmission, Inc. Chris has been an active member of several industry boards and holds a Bachelor of Science in Mechanical Engineering from West Virginia Institute of Technology and an MBA from West Virginia Wesleyan.