Looking for reliable biogas information can be surprisingly difficult. There is now a huge amount of material online about anaerobic digestion, biomethane, biogas plants, digestate and renewable gas, but not all of it is current, UK-specific or technically dependable.
This page brings together some of the most useful biogas information resources for the UK, including government guidance, industry organisations, technical resources, plant information and independent research.
It also provides quick answers to common questions such as how biogas is produced, what biogas is used for, examples of biogas applications and the advantages of biogas, with links to our more detailed guides where appropriate.
If you simply want the definition first, see our dedicated guide: What is Biogas?
This article was originally published as a guide to the UK Biogas-Info portal. It has been substantially revised and expanded for 2026.
What Is Biogas? A Short Answer
Biogas is a renewable gas produced when microorganisms break down organic material in the absence of oxygen. That biological process is called anaerobic digestion.
Raw biogas consists mainly of methane and carbon dioxide, together with smaller quantities of other gases and water vapour. When biogas is cleaned and upgraded to a sufficiently high methane concentration it is known as biomethane.
The anaerobic digestion process also produces digestate, which contains nutrients and organic matter and can potentially be used as a fertiliser or soil improver where regulatory and quality requirements are met.
For the full explanation, including biogas composition, production and applications, read What is Biogas?
How Is Biogas Produced?
Biogas is produced by anaerobic digestion. Organic materials such as food waste, manure, sewage sludge, crop residues and other biodegradable feedstocks are placed in an enclosed digester where microorganisms break them down without oxygen.
The biological process proceeds through several stages, culminating in methanogenesis, during which methane-producing microorganisms generate the methane-rich gas that we call biogas.
Commercial plants control factors such as temperature, feed rate, retention time, mixing and pH to maintain a stable microbial population and reliable gas production.
That is only the short version. If your main question is specifically “how is biogas produced?”, see our detailed guide here:
How Biogas Is Produced: Process, Methods and Uses
What Are the Main Uses of Biogas?
Biogas can be used to produce heat, electricity or renewable methane fuel.
Common biogas uses include:
- combined heat and power (CHP);
- industrial and process heating;
- boiler fuel;
- electricity generation;
- upgrading to biomethane for gas-grid injection;
- vehicle fuel;
- renewable fuel for industrial processes; and
- potential future production of hydrogen and renewable chemicals.
Biomethane is particularly significant because, once upgraded to the required specification, it can substitute for fossil natural gas in many existing applications.
For the full list and explanation, see our dedicated article: 10 Uses of Biogas.
Examples of Biogas in Practice
There is no single type of biogas plant. Biogas examples range from small farm digesters to large commercial biomethane facilities.
Typical examples include:
- farm AD plants processing manure and crop residues;
- food-waste AD plants treating household or commercial organic waste;
- sewage sludge digesters at wastewater treatment works;
- industrial anaerobic digestion treating high-strength organic effluents;
- biomethane plants upgrading biogas for injection into the gas network; and
- small rural digesters producing gas for cooking or heating.
The UK Parliamentary Office of Science and Technology reported in July 2026 that there were approximately 750 municipal, commercial and smaller agricultural AD plants operating in the UK as of March 2026, producing an estimated 21 TWh of biomethane-equivalent energy annually. Read the POST briefing.
What Are the Advantages of Biogas?
The advantages of biogas extend beyond the production of renewable energy.
Depending on the feedstock and plant design, anaerobic digestion can provide:
- renewable gas production;
- recovery of energy from organic wastes;
- reduced methane emissions from unmanaged organic material;
- diversion of biodegradable waste from landfill;
- improved manure management;
- production of digestate containing plant nutrients;
- substitution for fossil natural gas;
- locally produced and storable energy;
- support for energy resilience; and
- greater recycling of nutrients within the circular economy.
However, the benefits depend upon good plant design and operation. Fugitive methane emissions, poor digestate management, inappropriate feedstock choices and transport impacts can reduce the environmental benefits of badly designed or operated projects.
For a fuller discussion, see Advantages and Benefits of Biogas.
Where Can You Find Reliable Biogas Information in the UK?
For anyone researching a project, studying anaerobic digestion or working professionally in the industry, source quality matters.
The following organisations provide useful starting points.
1. Biogas-Info: The UK Anaerobic Digestion Information Portal
One of the longest-established UK resources is Biogas-Info.co.uk.
The site describes itself as “The Official Information Portal on Anaerobic Digestion”. It was established in 2009 with support from government and industry and is maintained by NNFCC.
The portal contains information about:
- anaerobic digestion;
- feedstocks;
- biogas;
- digestate;
- planning;
- regulation;
- funding and incentives;
- AD plants;
- suppliers;
- case studies; and
- industry networks.
This was the main subject of the original version of this article, and it remains a useful starting point for people seeking UK biogas information.
2. UK Government Biogas and Anaerobic Digestion Information
For regulation, permitting and government policy, GOV.UK should normally be treated as a primary source.
The Environment Agency publishes detailed rules covering anaerobic digestion facilities in England.
For example, its standard-rule permits for anaerobic digestion were updated in February 2026 and include separate rules for:
- larger AD installations;
- smaller waste-recovery AD facilities;
- on-farm anaerobic digestion; and
- sewage-sludge digestion.
See the current government collection here:
Environment Agency Standard Rules for Environmental Permitting
Do not assume that an AD plant can accept any biodegradable feedstock simply because it can technically digest it. Waste acceptance and feedstock changes must comply with the site’s permit or other applicable authorisation.
3. Parliamentary and Independent UK Biogas Information
The UK Parliament’s Parliamentary Office of Science and Technology (POST) is another useful source because its briefings summarise evidence for parliamentarians rather than promoting individual technologies or companies.
Its July 2026 briefing Upscaling Anaerobic Digestion reviews both the potential benefits and challenges of expanding the UK AD sector.
The briefing discusses feedstocks, food waste, methane emissions, digestate, biomethane and the question of whether UK AD capacity is expanding sufficiently to process additional separately collected organic waste.
4. World Biogas Association
The World Biogas Association provides international information about anaerobic digestion, biogas and biomethane.
Its material is particularly useful when researching:
- global biogas markets;
- international policy;
- methane reduction;
- biogas industry development;
- best practice; and
- the role of AD in waste management and decarbonisation.
UK readers should remember that regulations, permitting systems and incentives differ significantly between countries, so international information should always be checked against current UK requirements.
5. Industry Associations and Specialist Sources
Industry organisations can provide market intelligence, technical events, guidance and practical experience that government websites may not cover in detail.
For UK anaerobic digestion this includes organisations such as the Anaerobic Digestion and Bioresources Association (ADBA), alongside specialist consultancies, universities, equipment manufacturers and plant operators.
Commercial information can be very useful, but readers should distinguish between:
- independent guidance;
- regulatory requirements;
- industry opinion;
- case-study evidence; and
- manufacturer marketing claims.
They are not necessarily contradictory, but they serve different purposes.
Biogas Plant Information for a Project
The search phrase “biogas plant information for project” suggests that many readers are students, researchers or people carrying out an early feasibility assessment.
If you are gathering information for a biogas project, start with these subjects:
- Feedstock: What organic material is available, in what quantity and throughout what period?
- Biogas yield: How much methane can realistically be produced?
- Process type: Wet or dry digestion, mesophilic or thermophilic, continuous or batch?
- Digestate: Where will it go, and what quality or regulatory requirements apply?
- Energy use: CHP, heat, biomethane grid injection, vehicle fuel or another use?
- Planning: Is the proposed site acceptable in terms of traffic, landscape, odour and neighbouring land uses?
- Environmental permitting: What authorisation is required for the proposed feedstocks and throughput?
- Economics: What are the capital, operating and feedstock costs and likely revenues?
- Safety: Methane, hydrogen sulphide, pressure systems, DSEAR/ATEX and confined spaces require competent design and operation.
A biogas project should never begin with the assumption that simply having organic waste available automatically creates a viable AD plant.
Feedstock security, planning, permitting, digestate outlets, energy markets and operating competence are all fundamental.
Biogas Information for Students and Researchers
Students searching for biogas information should ideally use a mixture of primary and secondary sources.
A useful hierarchy is:
- government and regulatory sources for law, permits and policy;
- peer-reviewed research for scientific findings;
- Parliamentary and institutional briefings for evidence summaries;
- industry associations for current commercial context;
- plant operators and equipment suppliers for case-study experience; and
- specialist technical websites for explanations and practical interpretation.
Wikipedia can be useful for orientation, but important technical, regulatory or commercial claims should be verified against the underlying sources.
Biogas Information PDFs and Downloads
Some readers prefer to download biogas information PDFs for offline reading, teaching, training or project work.
We maintain a growing collection of anaerobic digestion and biogas resources, including guides and downloadable material here:
Biogas and Anaerobic Digestion Downloads
These resources cover subjects ranging from biogas production and anaerobic digestion processes to equipment selection and specialist technical topics.
Technical Biogas Information on Anaerobic-Digestion.com
This website has published information about anaerobic digestion and biogas for many years. Rather than trying to answer every possible question on this one page, we recommend using the following specialist guides.
- What Is Biogas? – definition, composition and basic principles.
- How Is Biogas Produced? – the biological production process.
- 10 Uses of Biogas – heat, power, biomethane and other applications.
- Advantages and Benefits of Biogas – environmental and economic benefits.
- Anaerobic Digestion Pumps – pump selection and maintenance.
- Anaerobic Digester Mixing Systems – mixer selection and digester performance.
How Reliable Is Online Biogas Information?
One problem with searching for biogas information is that old pages can remain highly visible long after regulations, incentives and market conditions have changed.
This matters particularly for:
- government subsidies;
- environmental permits;
- planning policy;
- plant numbers;
- energy prices;
- biomethane incentives; and
- technical standards.
Always check the publication date and the jurisdiction.
An excellent German, American or Indian article may provide useful technical information while being completely unsuitable as a source for UK permitting or planning requirements.
Similarly, a UK article written ten years ago may accurately describe anaerobic digestion technology but contain obsolete information about tariffs or regulation.
Biogas Information Is Becoming More Important
Biogas was once discussed mainly as a way of treating sewage sludge, manure or organic waste while producing some useful energy.
That view is now too narrow.
Modern anaerobic digestion can contribute to:
- organic-waste recycling;
- renewable electricity;
- renewable heat;
- biomethane production;
- gas-grid decarbonisation;
- local energy production;
- energy security;
- methane-emission reduction;
- manure management; and
- nutrient recycling through digestate.
This wider role is one reason why obtaining accurate and current biogas information matters more than ever.
The July 2026 Parliamentary POST briefing reflects this changing debate, considering not only waste treatment and renewable energy but also methane emissions, food waste, agriculture and the scale of future UK AD deployment.
Archive: The Development of the UK Biogas Information Portal
The original version of this article focused heavily on Biogas-Info.co.uk.
The portal was established in 2009 as an independent authoritative anaerobic digestion resource with government and industry support and was developed and maintained by NNFCC.
At a time when reliable UK information about AD was much harder to find, the portal brought together material on:
- how anaerobic digestion works;
- feedstocks;
- biogas;
- digestate;
- regulation;
- planning;
- funding;
- suppliers; and
- UK AD plants.
The fact that the portal remains online in 2026 makes it a useful part of the historical and current UK AD information landscape.
It should, however, be used alongside current government guidance and other up-to-date sources, particularly where regulation, incentives or plant statistics are concerned.
Biogas Information: Frequently Asked Questions
What is biogas in simple terms?
Biogas is a methane-rich renewable gas made when microorganisms break down organic material without oxygen. The process is called anaerobic digestion.
How is biogas produced?
Biogas is produced when microorganisms digest biodegradable materials such as food waste, manure or sewage sludge inside an oxygen-free digester. Methane-producing microorganisms generate the methane component of the gas during the later biological stages of digestion.
What are the main uses of biogas?
Biogas can be burned for heat, used to generate electricity, used in CHP systems or upgraded to biomethane. Biomethane can then be injected into gas networks, used as transport fuel or substitute for fossil natural gas in suitable applications.
What are examples of biogas?
Examples include gas produced from farm manure digesters, food-waste AD plants, wastewater-treatment digesters and commercial biomethane plants. Landfill gas is also a methane-rich biogas, although it is produced within landfill rather than in a purpose-built anaerobic digester.
What are the advantages of biogas?
Advantages can include renewable energy production, treatment of organic waste, methane capture, production of digestate, recycling of nutrients and reduced dependence on fossil fuels. The scale of those benefits depends on good plant design and operation.
Where can I find reliable UK biogas information?
Useful sources include GOV.UK and the Environment Agency for regulation, NNFCC’s Biogas-Info portal, Parliamentary POST research, industry associations and specialist technical resources such as Anaerobic-Digestion.com.
Where can I find biogas information for a school or university project?
Start with government or institutional sources for factual information, then use specialist technical resources for explanations and case studies. Important claims should ideally be supported by primary or peer-reviewed sources.
Is there a biogas information PDF?
There are many downloadable reports and guides about biogas. Our anaerobic digestion downloads page provides access to a range of biogas and AD resources.
Conclusion: Finding Good Biogas Information
There is no shortage of biogas information online, but reliable information needs context.
A student asking how biogas is produced needs a different source from a developer trying to determine environmental-permit requirements, while an operator choosing equipment needs practical engineering information rather than a general definition.
The best approach is therefore to use the appropriate source for the question:
- technical explainers for understanding the process;
- government sources for regulation;
- research organisations for evidence;
- industry bodies for market context; and
- experienced practitioners for practical application.
As anaerobic digestion becomes increasingly important for renewable gas, waste recycling, nutrient recovery and energy resilience, the need for accurate, current and technically sound biogas information will continue to grow.
[This post was first published on 16 July 2018. Updated 26 June 2022. Updated September 2026 and moved from the Blog.]
