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Deploying our proven energy infrastructure project development expertise and leveraging off our completion of the world’s largest anaerobic co-digestion project, RNG Energy is continuing development of large urban anaerobic digesters that produce renewable natural gas and manage large volumes of organic waste while supporting regional sustainability goals.

Our Mission

Our stated mission is to deploy our proven development expertise towards the successful development of large-scale anaerobic digester projects for the production of sustainable and renewable natural gas.

Who We Are

RNG Energy Solutions, LLC (RNG) develops, finances, owns, and manages the operations of state-of-the-art anaerobic digester projects that produce renewable natural gas. As the successor company to AgEnergy USA, RNG brings three decades of conventional and alternative energy development experience in the agricultural, urban, and industrial environments. Most notably, AgEnergy USA completed the development of the Heartland Renewable Energy project, which is the largest co-digestion anaerobic digester project in the world.

RNG Energy Solutions’ predecessor company, AgEnergy USA, LLC, was founded in 2010 to provide industry leading technology and project development capability to generate renewable energy from organic waste streams by developing, financing, constructing, owning, and operating anaerobic digester (AD) projects in North America. AgEnergy was the developer and is currently a net profit interest owner of the Heartland Biogas LLC Project.

The RNG Energy team has over 100 combined years of related industry experience. Our work developing complex energy infrastructure projects includes permitting, preliminary design, financing, construction management and operations.

What We Do

All of the projects completed by RNG Energy Solutions personnel incorporated first time applications of environmental control technologies and commercial/contractual solutions resulting in energy projects being completed in high barrier to entry markets. The fast track projects on Long Island were developed and constructed in record time. As an example, RNG Energy personnel secured the permits, financed and released for construction the 80MW Pinelawn Power Combined Cycle Project in 10 months. As another example, AgEnergy secured all the permits for the unique and complex Heartland Renewable Energy Project in 8 months. Construction on this first of its kind project was initiated 30 days thereafter.

Heartland Project

Heartland is an anaerobic digester project using dairy manure and organic waste substrate in a high ratio, complete mix, co-digestion system. The Project includes 6, 1.7 MG bio-reactors, Biogas Upgrading System, gas compression and pipeline interconnection to Colorado Interstate Gas company (CIG) pipeline.


  • Heartland is the largest co-digestion anaerobic digester project in the world.
  • Heartland is a high ratio co-digestion anaerobic digester utilizing regionally sourced organic material.
  • Raw biogas is upgraded to pipeline quality gas via three separate Greenland Totara plus wet scrubbers rated at 1,600 (each) dktherms per day.


  • Phase 1 of the Heartland Project will produce 4,700 dktherms per day of pipeline quality Renewable Natural Gas (RNG).
  • Numerous communities in the Denver metro region have voluntarily decided to manage their organic waste streams by collecting and sending their organic material to the Heartland project.


  • Provides a low cost, base load, renewable alternative to solar and wind generation.
  • Provide capacity for industry and communities to achieve long term sustainability goals.
  • Provides regional, high paying jobs during construction and during the long term operation and maintenance phase.

Long Island Projects

AgEnergy, through its subsidiary, Clearview Power completed development of 4 Power Projects on Long Island. The following is a summary of the Projects.

PPL Brentwood


Pinelawn Power


PPL Shoreham


Freeport Electric


AD Project Experience

James Potter developed his early understanding of co-digestion anaerobic digesters as former President of Homeland Renewable Energy (HRE). The HRE team acquired the following three projects in Wisconsin and managed the operations including substrate procurement and supply. These Projects were early innovators in the AD space in North America. HRE successfully operated the projects in the thermophilic mode for several years and consistently outperformed the original gas production analyses.

Five Star




Wild Rose



The FibroMinn Project is the largest poultry litter combustion project in the world and the project deployed numerous state-of-the-art emission control and boiler technologies.

  • The FibroMinn Project was developed, financed and operated by Homeland Renewable Energy.
  • Combustion-600 TPD of Poultry Litter and Wood Waste
  • Commissioned in 2007
  • Power Rating-65MW’s

RNG Energy Team


James Potter


Mr Potter has 28-years of energy infrastructure project development, project finance and acquisition experience. His background includes specializing in strategic domestic and international power project development and asset acquisition, having successfully developed multiple complex power projects and managed the acquisition of several large power generation portfolios. Past project development experience includes nearly $2.0 billion in natural gas fired projects, biomass and bio-gas projects. All of these projects incorporated unique and aggressive emission control systems and many were located in high barrier markets. Current project development expertise is focused on development of large anaerobic digester projects. Mr Potter and his AgEnergy Project Team most recently completed development, financing and construction of the Heartland Project, the largest co-digestion anaerobic digester project in the world.



Andy Shea

Chief Operations Officer

Andy Shea brings over 30 years of experience in business and project development of water and energy infrastructure projects. As a co-founder and COO of RNG Energy Solutions, LLC, Andy leads the project development and venture management activities on RNG’s large-scale anaerobic digester projects. Previously, Andy served as HDR’s SVP and Industrial Sector Director leading the progressive design-build scoping phase for the Heartland Biogas project in Weld County, CO.


Contact Us

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