Turning Waste into Value

Our Services Include:

  • Biogas Project Development

  • Gas Conditioning Systems

  • Floating Digester Covers

  • Digester Covers for Gas Storage

  • Site specific sludge removal and maintenance systems

  • Tank Biogas Covers

  • Ambient Temperature and Mesophilic Lagoon Biogas Systems

  • Flaring and Cloud Based Monitoring Equipment

  • O2 injection systems for H2S removal

  • Carbon Dioxide extraction and purification from waste RNG tail gas

EFI - The leader in Anaerobic Lagoon Digesters for Biogas Production

We are the #1 installer of covered lagoon anaerobic digesters in the U.S., with over 500 operating systems. Our innovative, integrated approach captures the value in your waste stream, transforming it into a sustainable energy source for your operation.

EFI has the most comprehensive dataset of biogas feedstock materials, their biogas potential, operating conditions, and project return analyses, assembled from hundreds of biogas projects around the world. 

EFI does not produce, market or transport RNG

Our partners

  • JBS logo with blue text and green and blue curved lines on either side
  • A logo featuring a stylized sun rising above two red and blue paths, with the word "AEMETIS" beneath.
  • Sonoco logo with a blue background and white stylized design.
  • Illustration of a woman with brown hair in a red dress with white sleeves, standing behind a garden of leafy greens and vegetables, surrounded by a yellow sunburst on a red background. The text 'SUN-MAID' appears below.
  • Perdue logo with a rural landscape and a house in the background
  • Wayne Sanderson Farms logo with red rooster and slogan 'Together, We Make Chicken Amazing'
Dennis Shanklin receiving the American Biogas Council Lifetime Achievement Award from Bernie Sheff

American Biogas Council Honors EFI Founder & President Dennis Shanklin with Lifetime Achievement Award

Case Study - Perdue Lewiston - Winner of the 2025 US Poultry Association Clean Water Award

Erica Chase with EFI and Neal Powell with Perdue Farms and Ashton Weller with Perdue Farms

Project Highlights:

  • EFI installed HDPE covers on two wastewater lagoons.

  • The project reduced GHG Emissions by 95%, equivalent to 120,000 tons per year (17% of Perdue’s corporate-wide emissions.)

  • Recovery and Purification of CO₂: EFI’s subsidiary CleanCycle Carbon purifies CO₂ from anaerobic digester to beverage-grade quality for beneficial industry reuse.

An aerial view of an anaerobic digester covered by EFI
An aerial view of an anaerobic digester before being covered by EFi with geosynthetic membrane and HDPE liner

We’re passionate about helping you build smarter, stronger projects from the ground up! By consulting on your specific project, regulatory requirements and long-term goals, we guide you toward the best-fit solution.

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The Impact of a Complete Biogas System

Our solutions go beyond simple waste management to create a positive impact on your operations and the environment.

Creating a Sustainable Energy Source: Our specialized cover and liner systems enable the efficient capture of biogas for use as renewable electricity or fuel.

Unmatched Odor Control: The sealed system of the covered lagoon anaerobic digester effectively contains odors, improving air quality and community relations.

Guaranteed Environmental Compliance: Our systems prevent the release of methane, a potent greenhouse gas, so you can confidently meet stringent environmental regulations.

Why EFI Is the Partner of Choice

Market-Leading Expertise: Our team’s deep experience in geosynthetics and integrated biogas technology ensures a successful and profitable project.

Custom-Engineered to Your Site: We’re passionate about helping you build smarter, stronger projects from the ground up! By consulting on your specific project, regulatory requirements and long-term goals, we guide you toward the best-fit solution.

Seamless Project Execution: We manage the entire project from initial design to expert installation by our own crews, guaranteeing quality and a smooth process.

Let’s work together.

Interested in working together? Fill out some info and we will be in touch shortly! We can't wait to hear from you!