Loading...
Loading...
Insights & Resources
Technical guides, industry analysis, and project updates from the EFI team.
EFI's 32-year track record includes media coverage from National Hog Farmer, IFAI publications, Santee Cooper utility media events, and industry press conferences. This timeline shows how the company's story has evolved alongside the biogas industry.
The largest US meat processors are deploying covered lagoon systems at scale to capture methane from wastewater lagoons. EFI's work with JBS, Tyson, Pilgrims, and Darling across dozens of facilities shows how the food processing sector is approaching biogas.
A 200-cow dairy cannot justify the verification costs of carbon credit programs alone. But cluster 10-15 small dairies in a geographic region and the economics change entirely. EFI's Columbus Carbon Cluster analysis shows how aggregation opens the market.
Operating biogas systems in tropical climates, remote locations, and under international regulatory frameworks taught EFI lessons that improved every US installation that followed. From rum distilleries in the US Virgin Islands to palm oil facilities in southern Mexico.
Baffle curtains increase effective hydraulic retention time in lagoons by 40-60% without expanding footprint or adding mechanical systems. EFI's growing baffle curtain business across municipal and industrial applications demonstrates the technology's value.
Beyond federal programs, state-level incentives like NYSERDA grants, North Carolina renewable energy tax credits, and USDA REAP grants can stack to cover 40-60% of biogas project costs. Here is a practical guide to the programs EFI has navigated.
Chemical H2S scrubbing costs $50,000-$200,000 per year for large biogas systems. EFI's oxygen injection technology achieves the same or better H2S reduction at a fraction of the cost. Here are the numbers from real installations, backed by peer-reviewed research.
Analysis of EFI's 200+ active proposals reveals a market shifting beyond traditional dairy digesters. Municipal water treatment, food processing, mining containment, and industrial wastewater now represent a growing share of the pipeline.
EFI maintains an active presence at major biogas, agriculture, and environmental conferences across North America. From ABC Biogas Americas to IPPE to state-level dairy and swine events, here is where our team will be presenting and exhibiting in 2026.
As consolidation accelerates in the biogas sector, investors and operators need rigorous due diligence frameworks for digester and landfill gas assets. EFI's inspection packages cover both biodigester and landfill installations -- here is what to look for.
California's cap-and-trade program includes a Compliance Offset Protocol specifically for livestock methane projects. This guide breaks down how the protocol works, what the business case looks like in 2026, and why compliance credits trade at a premium over voluntary markets.
Proper mixing can increase biogas production from covered lagoon digesters by 20-40%. EFI's white paper on mixer selection for CLDs, combined with field data from mixer installations and replacements, provides a practical guide to this critical system component.
The EPA AgStar program maintains the national database of livestock digester projects and provides technical resources for methane reduction. As a long-time AgStar partner, EFI contributes operational data from hundreds of systems to help shape national biogas policy.
With 500+ systems in the field, EFI maintains more covered lagoon digesters than anyone in the US. Our 2025-2026 repair and replacement data shows clear patterns in system aging, common failure modes, and the decision framework for repair vs. full replacement.
Before CARB protocols and voluntary carbon markets existed in the US, EFI was building covered lagoon digesters across Mexico under the UN Clean Development Mechanism. That experience with 300+ international systems shaped the company's approach to carbon credit monetization.
Methane from livestock operations and food processing is 80 times more potent than CO2 over a 20-year horizon. With over 17,500 unmitigated sites in the US alone, cap-and-flare technology offers the fastest path to meaningful methane destruction.
Floating covers are engineered for 20-30 year service lives, but only with proper inspection and maintenance. This guide covers visual inspection checklists, common failure modes, maintenance schedules, and the repair-vs-replace decision framework.
ASTM D6693 is the standard test method for determining the tensile properties of geomembranes. This guide explains the test procedure, what the results mean, how to interpret spec sheets, and why tensile testing matters for liner performance in the field.
EFI's cap-and-flare model eliminates upfront costs for waste generators while delivering shared carbon credit revenue. Here's how the economics work for both sides.
Methane destruction credits are gaining ground over RNG credits in 2026 as carbon markets mature. Here's where pricing stands across voluntary and compliance markets and what's driving the shift.
Electrical leak location testing is the most reliable method for identifying defects in installed geomembrane liners. This guide covers the major ELL survey methods -- water lance, dipole, water puddle, and arc testing -- including when to use each, how they work, and what results to expect.
Choosing between a geosynthetic clay liner (GCL) and a compacted clay liner (CCL) affects project cost, schedule, and long-term performance. This guide compares both options across permeability, installation, cost, and regulatory acceptance to help engineers and owners make informed decisions.
Decommissioning an old waste lagoon involves more than draining and filling. This guide covers the full process -- from initial assessment and permitting through sludge removal, liner disposition, soil testing, and final closure -- along with realistic cost ranges and regulatory requirements.
Destructive seam testing is the most reliable way to verify geomembrane weld integrity. EFI tests every 150 linear feet, exceeding industry standards to ensure long-term containment performance.
Secondary containment liners are required by federal and state regulations for fuel storage, chemical storage, and industrial facilities. This guide covers EPA requirements, material selection, and design considerations.
Food processors across the country face mounting pressure from tightening NPDES permits, stricter BOD and TSS limits, and rising community complaints. Covered lagoon systems offer a single solution to odor, methane, and regulatory challenges.
Methane regulations are no longer just a federal concern. States from California to New York are implementing aggressive reduction targets that directly affect agricultural operations. Here is a state-by-state overview of what operators face and how voluntary methane destruction can turn compliance into a competitive advantage.
The craft brewery and distillery boom has created a surge in high-strength wastewater that municipal systems weren't designed to handle. Purpose-built lagoon systems with proper liner selection and floating covers solve both the compliance challenge and the neighbor problem.
UV degradation is the leading cause of premature geomembrane failure in exposed applications. Understanding how carbon black loading, HALS stabilizers, and UV testing protocols work together is essential for specifying liners that last decades, not years.
A new generation of methane-detecting satellites and EPA flyover programs is making agricultural methane emissions visible from space. For farms with uncontrolled lagoon emissions, the question is no longer if they'll be detected -- it's when.
Managing 500+ covered lagoon digester systems across the country requires more than periodic site visits. EFI's remote monitoring infrastructure combines field-hardened sensors, SCADA integration, and cloud dashboards to provide real-time visibility into every system we operate.
When NASA needed geosynthetic liner systems installed at Kennedy Space Center, they called EFI. Here's what it takes to meet federal engineering standards at America's most famous launch complex.
Gas-tight covers capture biogas for destruction or energy recovery. Permeable covers control odor and reduce algae. Here's how to choose the right system for your lagoon.
NPDES permits govern every discharge from your lagoon system. Here's what industrial operators need to know about discharge limits, monitoring, and how proper liner systems prevent violations before they start.
From third-party ownership to USDA REAP grants and carbon credit pre-sales, here's how waste-to-energy and methane destruction projects actually get funded in 2026.
Anchor trenches are the most overlooked detail in geomembrane installations. Getting the type, depth, and backfill wrong can lead to liner pullout, wind damage, and costly repairs.
Individual small farms cannot access carbon credit markets on their own. Aggregation models that cluster multiple sites under a single project make methane destruction economically viable for operations that would otherwise be left behind.
Ethanol plants face strict containment requirements for feedstock storage, stillage ponds, and process water lagoons. Understanding EPA and state regulations helps operators avoid costly violations and choose the right liner systems.
Reinforced polypropylene (RPP) liners fill a niche that HDPE and LLDPE cannot. From exposed UV applications to aquaculture and decorative ponds, RPP offers flexibility, chemical resistance, and weldability in a lightweight package.
The regulatory landscape for agricultural methane emissions is shifting rapidly in 2026. From EPA's Methane Emissions Reduction Program to expanded state requirements, here is what farmers and livestock operators need to know to stay compliant.
Swine operations face unique environmental challenges including lagoon management, nutrient overloading, and odor complaints. Modern environmental technologies -- from covered lagoons to nutrient recovery -- are transforming how the industry manages waste.
A detailed financial comparison of cap-and-flare methane destruction versus RNG facility construction, including real capex figures, payback timelines, and risk-adjusted returns from hundreds of operational projects.
A covered lagoon digester (CLD) is the most cost-effective way to capture methane from agricultural and industrial wastewater lagoons. Here's everything you need to know about how they work, what they cost, and whether one is right for your operation.
The carbon credit landscape is evolving rapidly, with significant implications for dairy and livestock operators who have invested in or are considering methane reduction systems. This analysis covers LCFS trends, voluntary market dynamics, and what operators should expect in 2026.
Quality assurance is what separates a liner that lasts 30 years from one that fails in 5. This guide details EFI's QA protocols -- including destructive testing every 150 linear feet of weld -- and explains why IAGI certification matters.
Poultry operations face specific environmental compliance requirements for wastewater management, litter storage, and lagoon containment. This guide covers NPDES permits, state requirements, and the containment systems that keep poultry operations in compliance.
Dairy farms can generate significant revenue by destroying methane from manure lagoons and selling the resulting carbon credits. Here is how the credit system works, what protocols apply, and how EFI's cap-and-flare model eliminates upfront costs.
Choosing between HDPE and LLDPE liners depends on your application, chemical exposure, and installation conditions. This guide breaks down the key differences to help you make the right decision.
EFI's zero-capex model lets farm operators get methane destruction systems installed at no upfront cost. Here's how the funding structure, revenue share, and operator economics actually work.
Dairy operators face an increasingly complex web of methane regulations at both state and federal levels. This guide breaks down SB 1383, CARB requirements, and EPA NSPS OOOOb compliance obligations for dairy operations in 2026.
Federal and state methane regulations are tightening rapidly. This guide covers the current regulatory landscape for agricultural methane emissions, including EPA rules, state-level programs, and compliance strategies for farm operators.
Swine operations face increasing regulatory pressure to manage lagoon emissions. Covered lagoon digesters offer a proven, cost-effective path to compliance while generating carbon credit revenue from methane destruction.
Reliable biogas system performance requires proactive maintenance. This annual inspection checklist covers cover integrity, gas collection piping, flare systems, H2S monitoring, and condensate management -- everything operators need to keep their systems running.
Lagoon cover costs vary significantly based on size, material, and application complexity. Here's a realistic pricing guide based on hundreds of installations across the US.
Selecting and sizing a biogas flare system requires matching destruction capacity to expected gas flows while meeting regulatory emission limits. This guide covers flare types, sizing methodology, and the equipment EFI uses across 500+ installations.
EPA's NSPS OOOOb rule extends federal methane monitoring and reduction requirements to agricultural sources for the first time. This guide explains which operations are affected, what compliance entails, and the timeline for implementation.
Dairy farms produce enormous quantities of methane from manure lagoons. Capturing that biogas is both an environmental imperative and a financial opportunity. Here's how it works and what it costs.
Not every biogas project should be an energy project. Flaring, genset electricity, and RNG upgrading each serve different economic and regulatory objectives. This guide compares the three pathways and helps operators determine which approach makes sense for their situation.
Modern landfill liner systems use multiple layers of geosynthetic materials to protect groundwater and meet regulatory requirements. This guide explains double-lined system design, materials, leak detection, and installation standards.
Stormwater management is a regulatory requirement for construction, industrial, and municipal sites. Geosynthetic liners in retention ponds, detention basins, and sediment traps provide reliable containment and water quality protection.
Baffle curtains transform a single-cell lagoon into a multi-pass treatment system, dramatically improving hydraulic retention time and treatment efficiency without the cost of building additional lagoons.
Data from 500+ methane destruction installations shows consistent 30-80% IRRs and 1-4 year payback periods. Here are the real numbers behind dairy farm methane capture economics.
Hydrogen sulfide (H2S) in biogas corrodes equipment, creates safety hazards, and drives up operating costs. O2 injection offers a low-cost biological alternative to traditional chemical scrubbers.
Cold weather does not have to halt liner installation, but it demands adjusted techniques and stricter quality controls. This guide covers best practices for HDPE welding, thermal contraction management, and project scheduling in winter conditions.
Choosing between a CSTR anaerobic digester and a covered lagoon digester (CLD) is one of the most important decisions in biogas project development. This guide breaks down cost, complexity, performance, and ideal use cases for each technology.
Lagoon odor complaints drive regulatory action, neighbor disputes, and operational disruption. Floating geomembrane covers are the most effective odor control solution, eliminating surface emissions while enabling biogas capture. This guide compares odor control approaches.
The RNG boom promised billions in returns from dairy and agricultural biogas. The reality has been writedowns, bankruptcies, and stranded assets. Here's why simple methane destruction is emerging as the smarter play.
Covering a wastewater lagoon delivers multiple benefits simultaneously -- odor elimination, algae control, biogas capture, and regulatory compliance. This guide explains the key benefits and helps you determine which cover type is right for your application.
Obtaining LCFS pathway certification unlocks the highest-value carbon credit revenue available to dairy biogas projects. This guide walks through the complete application process, from initial CI score estimation through CARB approval and ongoing compliance.
Floating covers come in two fundamental types: impermeable (gas-tight) and permeable. Each serves different applications. This guide explains the differences, including EFI's patented 3R permeable foam cover technology.
HDPE geosynthetic liners can provide 50+ years of reliable containment when properly installed and maintained. This guide covers the factors that determine liner lifespan, common degradation mechanisms, and maintenance practices that maximize service life.
Poultry processing generates some of the highest-strength wastewater in the food industry. Covered lagoon systems provide effective treatment, odor control, and biogas capture for poultry operations of all sizes.
Landfill gas collection systems are required by federal regulation at most large landfills and represent a significant engineering challenge. This guide covers system design, well installation, collection efficiency optimization, and NSPS compliance.
Choosing the right geomembrane material is a critical design decision that affects system performance, longevity, and cost. This guide compares the four major geomembrane materials -- HDPE, LLDPE, PVC, and RPP -- across key performance characteristics and applications.
Traditional H2S scrubbers cost $30,000-$50,000 per month in chemicals and maintenance. EFI's oxygen injection systems achieve 95%+ H2S removal at a fraction of the cost by leveraging natural biological processes.
HDPE welding is the most critical phase of any liner installation. Over 90% of containment failures originate at seams. This guide covers hot wedge fusion, extrusion welding, trial welds, and the QA testing protocols that separate reliable seams from future leaks.
Knowing when to repair a damaged lagoon liner versus replacing the entire system can save hundreds of thousands of dollars. This guide covers the signs of failure, repair options, and decision criteria for lagoon liner management.
A technical guide to geosynthetic liner installation for covered lagoon digesters, covering material selection (HDPE, LLDPE, RPP), site preparation, welding procedures, QA testing protocols, and anchor trenching best practices.
Food processing operations generate high-strength wastewater that is ideal for anaerobic treatment. Covered lagoon digesters provide effective BOD reduction while capturing biogas and reducing odor complaints. This guide covers design considerations for food processing applications.
Lined water reservoirs provide reliable water storage for agricultural irrigation, municipal supply, fire suppression, and industrial use. This guide covers the design and construction process from subgrade preparation through final leak testing.
HDPE liner installation is a precision operation where proper technique determines whether the system lasts 5 years or 30+. This guide walks through every phase from subgrade prep to final QA testing.
Double-lined containment systems with leak detection provide the highest level of environmental protection for critical containment applications. This guide explains when double liners are required, how they work, and the cost-benefit analysis operators should consider.
Proper sizing of a covered lagoon digester determines whether the system produces reliable biogas yields or becomes an underperforming liability. This guide covers the engineering fundamentals: hydraulic retention time, organic loading rate, lagoon volume, and climate-adjusted biogas yield calculations.
Heap leach pad liners must withstand extreme mechanical loads, aggressive chemical environments, and decades of continuous operation. This guide covers HDPE liner design, material selection, and installation for mining heap leach applications.
Thousands of municipal wastewater lagoons across the United States are reaching the end of their original design life. This guide covers how to identify aging infrastructure, plan rehabilitation projects, and upgrade lagoon systems for another 30-50 years of service.
Floating cover systems serve multiple functions: odor control, biogas collection, evaporation reduction, and regulatory compliance. This technical overview covers materials, design approaches, and application-specific considerations.
Industrial wastewater lagoons must handle chemical environments, loading rates, and regulatory requirements that far exceed residential or agricultural systems. This guide covers the engineering principles of lagoon sizing, liner selection, freeboard, overflow design, and monitoring systems.
Mining operations require containment systems that can handle extreme chemical environments, massive volumes, and decades of service life. This guide covers geosynthetic liner applications for heap leach pads, tailings storage facilities, and process solution ponds.
Anaerobic digestion is the biological engine behind every biogas system. Understanding the four-stage microbial process -- hydrolysis, acidogenesis, acetogenesis, and methanogenesis -- is essential for designing and operating reliable digestion systems.
Get industry insights, project updates, and technical guides delivered to your inbox.
Our engineering team has 30+ years of real-world experience with covered lagoon digesters, geosynthetic liners, and biogas systems. Ask us anything.
Contact Our Team