Anaerobic Digestion Courses: Academic, Industry and Expert-Led Online Training

Anaerobic digestion courses now range from free introductory online learning to specialist operator training, professional CPD, university-level study and formal operator certification.

That is good news if you want to enter the biogas industry or deepen your existing knowledge. It also creates a problem: an AD plant operator, an engineer, a project developer and somebody completely new to anaerobic digestion do not necessarily need the same training.

The best course therefore depends less on finding the “best anaerobic digestion course” and more on finding the training that matches what you actually need to do.

This guide compares some of the principal academic, professional, industry and expert-led anaerobic digestion training options available in 2026, including courses in the UK, United States and internationally.

Several are available entirely online, while others combine formal instruction with plant visits, laboratory work or specialist professional training.

What Do Anaerobic Digestion Courses Actually Teach?

Anaerobic digestion sits at the intersection of microbiology, chemistry, mechanical engineering, environmental management and energy production. Consequently, courses vary enormously in depth and emphasis.

A good introductory course should normally explain the biological process itself, including the four principal stages of anaerobic digestion and biogas production:

• hydrolysis;
• acidogenesis;
• acetogenesis; and
• methanogenesis.

More advanced courses may progress into subjects such as:

• feedstock characteristics and co-digestion;
• organic loading rate and hydraulic retention time;
• volatile fatty acids and alkalinity;
• process monitoring and laboratory testing;
• inhibition and digester souring;
• mixing and pumping;
• biogas cleaning and upgrading;
• CHP and biomethane production;
• digestate management;
• odour control;
• DSEAR, confined spaces and other safety issues;
• preventative maintenance;
• environmental compliance; and
• troubleshooting underperforming digesters.

For plant personnel, an understanding of anaerobic digester mixing systems, feedstock variability and process stability can be just as important as understanding the underlying microbiology.

Choosing the Right Anaerobic Digestion Training

Before booking a course, decide what outcome you actually need.

Beginners normally need a structured introduction to AD biology, plant components, biogas and digestate.

Plant operators need considerably more emphasis on monitoring, loading, mechanical equipment, process instability, gas safety, maintenance and troubleshooting.

Engineers and process scientists may need deeper coverage of process calculations, instrumentation, laboratory data, mass balances, reactor performance and optimisation.

Developers, consultants and investors are more likely to need project feasibility, technology selection, economics, finance and regulation.

Experienced AD professionals may get more value from narrowly focused courses on subjects such as DSEAR, grid injection, laboratory testing, feedstock, digestate or competency management than from another general introduction to anaerobic digestion.

Anaerobic Digestion Course Providers Compared

American Biogas Council Digester Operator School

For anyone specifically seeking anaerobic digester operator training in North America, the American Biogas Council (ABC) Digester Operator School deserves particular attention.

The full Operator School currently contains 15 modules developed with a strong emphasis on practical plant operation.

They include:

• Fundamentals of Anaerobic Digestion;
• Substrate as Potential Energy;
• Math for Digesters;
• Mechanical Systems;
• Hydraulics, including pumps and mixers;
• Laboratory Testing;
• Odour Management and Prevention;
• Safety;
• Gas Utilisation;
• Digestate Management;
• Vector Management;
• Regulatory Reporting;
• Mechanical Systems Maintenance;
• Process Flow and Site-Visit Preparation; and
• Safety at Gas-Upgrading Facilities.

It is important, however, to distinguish between attending Operator School and becoming an ABC Certified Digester Operator.

Modules 1 to 9 are the required Operator School modules for ABC Operator Certification.

Certification also requires documented operational experience. ABC currently specifies at least 2,000 hours of experience in an anaerobic digester operations role, together with prescribed safety training and successful completion of the ABC operator examination.

ABC offers routes including virtual training and an in-person Operator School associated with Michigan State University.

For a working operator who wants a structured professional pathway rather than simply an introductory AD course, this is one of the most substantial programmes covered in this guide.

Advanced American Biogas Council Training

ABC also provides specialist continuing education.

One example in 2026 is Advanced Laboratory Testing for Anaerobic Digestion and Biogas Operations, a virtual course aimed at people who already have a basic understanding of anaerobic digestion and want to make better use of laboratory testing and process data.

This illustrates an important point about professional AD development. Once someone understands the fundamentals, a narrowly focused technical course can sometimes deliver more benefit than repeating another general biogas course.

EPA AgSTAR Training and Technical Resources

The US Environmental Protection Agency's AgSTAR programme, operated collaboratively with the US Department of Agriculture, is particularly relevant to agricultural anaerobic digestion and livestock manure.

AgSTAR is better regarded as a substantial training and technical-resource programme than as a conventional certification provider.

Its resources include:

• webinars and recorded presentations;
• the AgSTAR Project Development Handbook;
• an Anaerobic Digester/Biogas System Operator Guidebook;
• technical guidance;
• project-development tools;
• biogas system information; and
• links to university and industry resources.

These resources can be particularly useful for farmers, agricultural advisers, developers, state agencies and those investigating whether an agricultural AD project is technically and economically realistic.

Many materials can be accessed free of charge, although using AgSTAR resources does not in itself provide an AD operator qualification.

CIWEM Anaerobic Digestion Course

The UK's Chartered Institution of Water and Environmental Management (CIWEM) offers one of the more substantial professional online introductions to AD.

The CIWEM Anaerobic Digestion course covers both the underlying process and its application to pollution control and renewable energy production from biological wastes.

Subjects include:

• feed materials;
• AD microbiology and chemistry;
• process operating variables;
• pre-treatment;
• inhibition and process upsets;
• principal plant equipment;
• biogas utilisation;
• biogas clean-up and upgrading;
• CHP selection; and
• use of digested residues in agriculture.

As listed in 2026, the programme is structured over approximately five weeks at around two to three hours of learning per week.

This makes it particularly appropriate for engineers, environmental professionals, consultants and those wanting structured professional development without having to attend a full-time course.

CIWM Anaerobic Digestion E-Learning

The Chartered Institution of Wastes Management (CIWM) is another useful UK source of professional AD education.

Its Anaerobic Digestion Module 1: A Technical Overview uses practical examples and representations of operating facilities to explain the fundamentals of the technology.

The module introduces:

• microorganism activity;
• the environmental conditions required by the biological process; and
• the four-stage digestion process leading to biogas production.

This is particularly relevant to waste-management professionals who need to understand how AD fits within organic-waste treatment but do not initially require intensive operator-level instruction.

ADBA Training for the UK Anaerobic Digestion Industry

The Anaerobic Digestion and Bioresources Association (ADBA) is the principal UK trade association specifically representing the AD and biogas sector.

Its training programme is especially useful once learners move beyond basic explanations of how anaerobic digestion works and begin dealing with the realities of operating and managing UK plants.

Examples on ADBA's 2026 programme include training covering:

• DSEAR;
• feedstock;
• biomethane grid injection; and
• competency management systems.

ADBA also runs conferences, workshops, member meetings and technical events.

This type of learning serves a different purpose from a general AD course. Understanding the biology of digestion is essential, but a professional working at a commercial plant may also need specialist knowledge of explosion-risk management, feedstock acceptance, gas-grid requirements and competency systems.

Current training and events should be checked directly through the ADBA events and training calendar, because individual courses and dates change.

Marches Biogas Operator Training and E-Learning

UK-based Marches Biogas offers both practical training and online learning derived from experience with operating AD facilities.

Its e-learning courses are aimed primarily at AD operators but are also promoted for students, consultants and others wanting to understand anaerobic digestion.

The introductory material covers subjects including:

• the fundamentals of anaerobic digestion;
• feedstock characteristics;
• feedstock contamination;
• storage and pre-treatment;
• biogas composition and quality;
• gas storage;
• biogas utilisation;
• digestate characteristics; and
• digestate treatment and utilisation.

Marches Biogas also offers operator training on specific subjects, including biological processes, plant operation, maintenance, DSEAR-related hazards and regulatory considerations.

This makes it a useful option for people seeking training that is closer to the realities of operating a UK AD plant than purely academic study.

Aqua Enviro: Optimising Anaerobic Digesters

Aqua Enviro provides specialist technical training for the water, wastewater and bioresources sectors.

Its Optimising Anaerobic Digesters: Sewage Sludge course is particularly relevant to wastewater operators, process scientists, managers, regulators and technology suppliers.

The course goes beyond a basic explanation of AD and examines operational performance using parameters including:

• volatile fatty acids and alkalinity;
• hydraulic retention time;
• organic loading rate;
• volatile-solids destruction;
• foaming;
• inhibition;
• advanced anaerobic digestion;
• digestate dewatering;
• liquor treatment; and
• biosolids compliance.

For someone already working with sewage-sludge digestion, this type of optimisation training may be considerably more useful than a general introductory biogas course.

Current dates are listed through Aqua Enviro's training programme.

IBBK Biogas Training

Germany-based IBBK has provided biogas training internationally for many years and offers several levels of education.

Its English-language Biogas #ONLINE course is specifically identified as a beginner-level programme.

The online course contains approximately 2.5 hours of video material organised into modules covering:

• anaerobic digestion and biogas fundamentals;
• substrate preparation;
• fermentation and reactor components;
• digester types;
• biogas storage and utilisation;
• digestate treatment and use; and
• biogas plant design.

IBBK also provides other training formats, including specialist and practical programmes, so experienced professionals should examine its wider training catalogue rather than assuming the introductory online course represents the full extent of its offering.

RENAC: Biogas Project Development Training

Not everyone entering the biogas industry intends to operate a digester.

For project developers, consultants, investors and others working on the commercial delivery of new plants, RENAC's approach is distinctly different.

The Berlin-based Renewables Academy offers a Certified Renewable Energy Project Developer: Biogas online programme.

As listed for its 2026 intake, the programme runs for approximately six months and requires around 130 hours of study.

Its emphasis includes:

• biogas technology;
• feasibility assessment;
• project economics;
• financial analysis;
• policy and regulatory frameworks;
• project development; and
• implementation.

This is not primarily an operator-training course. It is intended to develop the skills needed to assess, structure and deliver biogas projects.

That distinction is important. A technically excellent operator is not automatically a project developer, just as somebody capable of producing a financial model is not automatically qualified to diagnose a souring digester.

Indigo Water Group: Anaerobic Digestion for Wastewater Operators

US-based Indigo Water Group provides water and wastewater operator training rather than specialising exclusively in standalone biogas plants.

Its online wastewater curriculum includes WWT-023 Aerobic and Anaerobic Digestion, alongside related subjects such as solids handling.

This makes Indigo most relevant to wastewater and utility professionals for whom anaerobic digestion forms one stage of a wider wastewater-treatment and biosolids-management process.

Training is available through Indigo Water Group's online training system, with other delivery options also available.

University and Academic Anaerobic Digestion Education

Universities have played a major role in developing modern understanding of anaerobic digestion, from reactor microbiology and process modelling to biomethane, wastewater treatment and resource recovery.

However, there is an important distinction between:

• a university conducting AD research;
• AD being taught within an engineering or environmental degree;
• a university hosting a professional conference; and
• a currently bookable standalone anaerobic digestion course.

These are sometimes confused in online lists of AD courses.

University modules and specialist short courses can be excellent choices for students, researchers and engineers who require stronger theoretical foundations, but availability frequently changes between academic years.

Prospective students should therefore check the current programme with the university itself rather than relying on old conference listings or archived course pages.

AD Training Club: Accessible Online Anaerobic Digestion Courses

Professional courses are invaluable, but not everybody who wants to learn about AD needs an operator certification or a multi-month professional programme.

That is one of the reasons AD Training Club was created.

The independent online platform is dedicated specifically to anaerobic digestion and biogas education and is designed to make AD knowledge accessible to people who may not have the time or budget to attend conventional classroom training.

Current material includes courses such as:

• An Introduction to the Principles of Anaerobic Digestion;
• How to Make and Use the Simplest of All DIY Home Biogas Plants; and
• HomeBiogas – Turn Your Waste Into Clean Energy.

The introductory Principles of Anaerobic Digestion course provides a particularly accessible entry point for people who first need to understand what happens inside a digester before progressing into engineering, operation or project development.

AD Training Club also provides a route for knowledgeable biogas specialists to contribute courses and share their expertise with learners.

Visit AD Training Club and explore the current anaerobic digestion and biogas courses.

Short Course or Formal Qualification?

There is no single answer.

If you have recently become responsible for an operating digester, you may obtain more immediate value from a focused operator or troubleshooting course than from enrolling on a long academic programme.

If you intend to design treatment systems, undertake research or pursue a senior engineering career, stronger academic foundations may be valuable.

If you develop projects, your priority may instead be technology selection, due diligence, financial modelling and regulation.

Experienced operators often benefit from combining approaches over time: an initial introduction to AD, followed by plant-specific training and later specialist courses in subjects such as gas safety, laboratory testing, feedstock optimisation or troubleshooting.

Why Operator Training Matters

An anaerobic digester is not simply a tank fitted with pumps and mixers. It is a biological treatment process whose microbial population responds to changes in feed composition, temperature, pH, loading rate, mixing and the accumulation of inhibitory compounds.

Mechanical reliability is essential, but biological instability can develop even when pumps, motors and control systems appear to be working normally.

An informed operator is better equipped to recognise warning signs in process data and investigate their causes before making major changes to plant operation.

For example, understanding loading, retention time, alkalinity, volatile fatty acids and gas production can help distinguish a genuine biological upset from a temporary change in feedstock or equipment performance.

Similarly, understanding the characteristics of different feedstocks is necessary before attempting to increase biogas yield. Simply feeding more organic matter into a digester does not guarantee more usable gas and can destabilise an overloaded process.

Training in Digestate, Safety and Gas Utilisation Matters Too

Learning should not stop at the digester outlet.

Commercial AD facilities also have to deal with biogas, hydrogen sulphide, potentially explosive atmospheres, CHP equipment or gas upgrading systems, digestate storage, nutrient management, odour and environmental compliance.

Anyone responsible for digestate should understand both its value and its limitations. Our guide to using digestate from anaerobic digestion plants in agriculture provides further background.

Plant managers may therefore need several different types of training rather than expecting one general anaerobic digestion course to cover everything necessary to operate a commercial facility safely and effectively.

Which Anaerobic Digestion Course Is Best for Beginners?

For a complete beginner, start with a course that teaches the biological process and the major components of an AD plant without assuming detailed engineering knowledge.

Suitable options include introductory material from AD Training Club, CIWM and IBBK.

EPA AgSTAR also provides useful free learning resources, particularly for those interested in agricultural biogas in the United States.

A person who already works on an AD facility should normally progress beyond these introductory courses into proper operator and safety training.

Can You Become a Certified Anaerobic Digester Operator?

In the United States, the American Biogas Council provides a defined Digester Operator Certification route.

The training requirement comprises the nine mandatory Operator School modules. Candidates must also demonstrate the required operational experience, complete specified safety training and pass ABC's examination.

This should not be confused with simply receiving a certificate showing that an online AD course has been completed.

A useful distinction is:

• certificate of completion – confirms that you completed a particular training course; versus
• professional/operator certification – requires you to satisfy a wider defined competency process.

The terminology used by different organisations varies, so always check exactly what a course certificate represents.

In the UK, schemes such as the AD Certification Scheme relate to the operation and performance of AD plants rather than providing an equivalent universal personal operator licence.

Are Free Anaerobic Digestion Courses Available?

Yes.

Free introductory learning is available from a number of sources, including resources from EPA AgSTAR and selected courses on AD Training Club.

Free training can be an excellent way to understand the basic process and determine which branch of the industry interests you.

However, free introductory learning should not be mistaken for plant-specific competency training, health and safety training or professional operator certification.

Frequently Asked Questions About Anaerobic Digestion Courses

What subjects are taught on anaerobic digestion courses?

Common subjects include AD microbiology, the four digestion stages, feedstock management, reactor types, process monitoring, gas production, digestate, health and safety and troubleshooting. Advanced courses may cover laboratory testing, organic loading, VFA/alkalinity relationships, inhibition, mixing, upgrading to biomethane and project economics.

Can I study anaerobic digestion online?

Yes. CIWEM, Marches Biogas, IBBK, RENAC, Indigo Water Group, AD Training Club and other providers offer at least some online training. ABC also operates virtual Operator School sessions.

Do I need an engineering degree to learn anaerobic digestion?

No. Introductory courses assume far less technical knowledge than engineering or process-design programmes. Operators, farmers, waste managers, students, developers and policymakers can all benefit from AD training appropriate to their role.

Is anaerobic digestion training only for plant operators?

No. AD projects require knowledge across development, engineering, planning, permitting, finance, construction, commissioning, operation, maintenance, gas utilisation and digestate management. Training should be selected according to the job you actually perform.

What is the best anaerobic digestion operator course?

There is no universal answer because regulatory and operational requirements differ between countries and plant types. In North America, the American Biogas Council offers a particularly structured operator-training and certification pathway. In the UK, providers including ADBA, CIWEM, Aqua Enviro and Marches Biogas offer training relevant to different aspects of professional AD operation.

Where can a beginner start for free?

EPA AgSTAR provides free technical information and recorded learning relevant particularly to agricultural biogas. AD Training Club also provides free introductory courses for learners wanting to understand anaerobic digestion and small-scale biogas before progressing to more specialised training.

Start With the Skills You Actually Need

The anaerobic digestion industry does not need everybody to take the same course.

It needs people who understand their part of the process properly.

For one person that means learning the microbiology of methanogenesis. For another it means recognising an unstable VFA-to-alkalinity relationship. Someone else may need to understand pumps, DSEAR, digestate, gas upgrading or project finance.

The most effective learning path is therefore usually progressive:

1. understand the fundamentals of anaerobic digestion;
2. learn the requirements of your particular role;
3. develop plant- or technology-specific competence; and
4. continue with specialist training as responsibilities increase.

If you are at the first of those stages, AD Training Club provides an accessible online starting point and a way to explore anaerobic digestion and biogas learning without committing immediately to an expensive professional programme.

If you already work professionally with AD, use the providers listed above to identify the technical, operational, safety or project-development training most closely aligned with the skills you now need.

Sources and Further Training Information

Training programmes, prices, dates and curricula change. The following provider pages were checked when this guide was updated in September 2026. Always confirm current details with the provider before booking.

• American Biogas Council – Digester Operator School
• American Biogas Council – Digester Operator Certification
• US EPA AgSTAR – Training Resources
• US EPA AgSTAR – Biogas Recovery in the Agriculture Sector
• CIWEM – Anaerobic Digestion Course
• CIWM – E-learning Courses
• ADBA – Training and Events
• Marches Biogas – AD E-learning
• Aqua Enviro – Technical Training Courses
• IBBK – Biogas Training Courses
• RENAC – Certified Renewable Energy Project Developer: Biogas
• Indigo Water Group – Online Wastewater Training
• AD Training Club – Anaerobic Digestion and Biogas Courses

Last reviewed and updated: September 2026.

[Published June 2022. Rewritten fully updated September 2026.]