Flagship Service
Biogas Capture & Anaerobic Digester Systems
500+ covered lagoon digesters installed. 82% US market share. The nation's most experienced biogas capture contractor.
Core Technology
Covered Lagoon Digester Covers
EFI's covered lagoon digester (CLD) systems use hermetically sealed geomembrane covers to capture biogas from organic waste decomposition. Operating at ambient or mesophilic temperatures, CLDs are the most cost-effective biogas capture technology for high-volume agricultural and food processing operations.
- Hermetic geomembrane cover with gas-tight perimeter anchoring
- Integrated gas storage volume under the cover surface
- Condensate drains and rainwater drainage systems
- Ambient and mesophilic temperature operation
- Designed for 20+ year service life with minimal maintenance
Tank Biogas Covers
Gas-tight cover systems engineered for concrete and steel tanks. Designed to support RNG upgrading with consistent gas quality and pressure management.
- •Compatible with concrete and steel tank structures
- •Supports RNG upgrading and pipeline injection
- •Positive and negative pressure rated
- •Integrated pressure relief and vacuum valves
Flaring & Monitoring
Complete flaring systems with cloud-based monitoring for regulatory compliance and operational visibility. EPA AgSTAR compliant with automated ignition and safety systems. Where destroying the gas beats using it, see cap and flare systems.
- •Enclosed and open flare configurations
- •Cloud-based real-time monitoring dashboards
- •EPA AgSTAR compliant systems
- •Automated ignition with safety interlocks
End-to-End Support
Biogas Project Development
EFI brings the most comprehensive biogas dataset in the United States to every project. Our engineering team provides full feasibility analysis, system design, and financial modeling backed by 30+ years of real-world operational data.
Feasibility Analysis
Site evaluation, waste characterization, and biogas potential assessment using our proprietary database of 500+ installations.
BMP Testing
Biochemical methane potential testing to quantify gas production rates from your specific waste streams.
HRT Optimization
Hydraulic retention time modeling to maximize biogas yield while maintaining system stability and treatment performance.
Financial Modeling
Detailed pro forma including capital costs, operating expenses, revenue projections, and payback period analysis.
Applications
Industries We Serve
Dairy Farms
Covered lagoon digesters for manure management and biogas capture at dairy operations of all sizes.
Swine Operations
High-volume waste management systems designed for the unique characteristics of swine waste.
Food Processing
Wastewater treatment and biogas recovery for processors, packagers, and beverage manufacturers.
Poultry
Biogas capture systems for poultry processing wastewater lagoons and litter management.
Municipal Wastewater
Digester cover systems for municipal wastewater treatment plants seeking to capture and utilize biogas.
Landfills
Gas collection covers and flaring systems for landfill methane management and regulatory compliance.
Case Study
Perdue Farms, Lewiston NC
EFI designed, fabricated, and installed a covered lagoon digester with full biogas capture and flaring at one of the largest poultry processing operations on the East Coast. The system achieves 95% greenhouse gas emission reduction while providing continuous methane destruction.
FAQ
Frequently Asked Questions
Testimonials
What Our Clients Say
I am always pleased when you are the successful bidder on our cover projects because I know that the projects are completed on time and in a professional manner.
W. James Wells
Technical Director, Food Industry, HDR Engineering
The job was performed on very short notice. They put in a long day and worked well into the night to complete the job. The timely repairs allowed us to start up the following day.
Michael Guertin
MeadWestvaco
As skeptical as we have been, we are now believers through our very own experience that your cover system does work. There is simply no odor that I or my staff can detect from this lagoon.
W. A. Murray
Executive Officer, Spectrum Preferred Meats
Each of these jobs has been satisfactorily completed within the past year. I would, and have, recommend EFI to other facilities when in need of these types of services.
Damon L. Depew
Environmental Superintendent, Cargill Meat Solutions
We continue to have interest in using permeable covers for odor control and emissions reduction from our lagoons. The data confirms the promise in this technology.
David A. Townsend, P.E.
VP Environmental Affairs, Premium Standard Farms
We have been happy with the quality of their product, professionalism and customer relations. I would not hesitate to recommend EFI to prospective customers.
Angelle Aldridge
Director of Marketing Support Services, Environmental Credit Corp
I have manufactured Water and Wastewater Biological Treatment Systems for over forty years. Now that I have used the Permeable Foam Covers, I am convinced that EFI has the best-engineered cover in the business.
John Hinde
President, Air Diffusion Systems
We have had an excellent relationship with Environmental Fabrics and find that they are well equipped, well managed and financially stable. Their bonding capacity is in excess of $1,000,000.
C. Wayne McCartha
President, McCartha, Cobb & Associates
We were pleased with the work that EFI did installing the permeable floating cover at the Iola Wastewater Treatment Plant. The installation went smooth and was completed on time and in a professional manner.
Kristy Beatty
Project Manager, BRB Contractors, Inc.
The project was on a very tight schedule and EFI came in with a skilled installation crew and completed the project on time, despite the weather delays associated with a winter installation. Zero safety accidents or violations.
Dale Robertson
Project Director, MC Industrial
We have worked with EFI for almost five years and have had an extremely successful track record. The attention that EFI gives to the final product while meeting budget and schedule restraints has made EFI top in the industry.
Kevin F. Strickland, P.E.
President, Strickland Engineering, Inc.
The floating cover was completed by EFI at a significant savings over other available options. To date the cover has performed exceptionally well and algae growth under the cover has been prevented.
Pieter K. Scheer, P.E.
Project Manager, G.N. Richardson & Associates, Inc.
Poly-Flex, Inc. has been a supplier of geosynthetic products to EFI since 1993. During this time Poly-Flex has enjoyed an outstanding working relationship with EFI and considers EFI a customer in very good standing.
Morris E. Jett
President, Poly-Flex, Inc.
EFI is one of the largest installers of Agru America's products in the Southeast region and one of our top installers in the United States. EFI has installed over 5,000,000 square feet of HDPE and LLDPE material.
Paul W. Barker
Technical Director, Agru America, Inc.
EFI has been a customer of ESP/SKAPS Industries for 10+ years. They are considered to be an excellent customer with an impeccable reputation in this industry.
Greg Scott
ESP/SKAPS Industries
The OCS product appears to have capitalized on new design techniques that allow for a better method of venting gases and uniformly insulating the surface. I certify that the products offered by OCS are equal to or superior to the specified modular insulated floating cover.
Robert P. McCormack, PE
Independent Engineer, Independent (30+ years experience)
EFI was very professional in their approach to the work, performed their work in accordance with industry standards and addressed any concerns on the part of the Engineer's representative overseeing the construction.
Robert E. Brossoie, P.G., C.P.G.
Senior Project Manager, Camp Dresser & McKee (CDM)
EFI has been an excellent partner in the development and implementation of agricultural projects to mitigate greenhouse gases and produce renewable energy. I would not hesitate to recommend EFI to prospective customers.
Scott Subler, Ph.D.
President & CEO, Environmental Credit Corp
Your cooperation and professionalism has enabled our company to continue its development on schedule and with minimal interruption. EFI's continued assistance and excellence in workmanship and installation skills are greatly appreciated.
Ted Hollon
Deployment Manager, PetroAlgae
Trusted by industry leaders across agriculture, food processing, government, and renewable energy
Ready to Capture Your Methane?
Our assessment includes biogas potential modeling, system sizing, and a detailed financial pro forma based on 500+ real installations.
Or call us directly: (307) 264-0309
Get Free Biogas AssessmentResearch livestock digesters and technical terms
Explore EPA AgSTAR records by state, digester type and operating status in the US Digester Atlas. Use the technical glossary for definitions used in project specifications.