- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 15 Feb 2019
Biogas is mainly composed of methane and carbon dioxide, but may also contain small amounts of nitrogen, hydrogen and carbon monoxide, as well water vapour and contaminants such as hydrogen sulphide and siloxanes.
After a relatively striaght-forward clean-up process, biogas (sometimes called biomethane or renewable natural gas (RNG)) can be used as a fuel. Biogas has been used as a fuel for many centuries, and in the UK, the city of Exeter used biogas for street lighting as early as 1895.
Typically, anaerobic digestion requires a heat source, and so biogas is often used to fuel combined heat and power (CHP) plant that produces both electricity and heat. The heat can be used for the anaerobic digestion process and can also be used to pasteurise animal-derived waste so that it can be used as fertilisers.
Combined heat and power plant can feed electricity into the national grid, and so biogas installations may qualify for payments under the renewable heat incentive (RHI) scheme (other than biogas from landfill).
 Find out more
 Related articles on Designing Buildings Wiki
- Anaerobic digestion (repeats some of the text in this article).
- Combined heat and power.
- Environmental impact of biomaterials and biomass (FB 67).
- Feed in tariff.
- Liquefied petroleum gas (LPG).
- Mains gas.
- Natural gas.
- Oil - a global perspective.
- Peak oil.
- Renewable energy.
- Renewable heat incentive.
- Shale gas.
- Types of fuel.
- Water vapour.
- Zero carbon homes.
- Zero carbon non-domestic buildings.
Featured articles and news
Special educational needs: analysing the necessities for inclusion
Can we build cities that anticipate the future?
How to provide affordable, sustainable and healthy urban communities.
The government has launched an ‘Outsourcing Playbook’.
How can we ensure the benefits of off-site construction are realised?
A new theory for managing large complex projects
A vision for digital highways
Finding stone to conserve historic buildings.
If it is not planned properly even a simple activity can kill.
A disgruntled or ignored stakeholder can easily derail your hard work.
Next generation cementitious materials
Still going strong...one of the great buildings of the 20th century.