Biogas and biomethane are renewable energy sources produced through the anaerobic digestion of organic matter — generated at landfills, wastewater treatment plants and biodigesters from agricultural waste, manure, municipal waste, plant material, sewage, green waste and food waste.
Inside a closed system — an anaerobic digester, biodigester or bioreactor — anaerobic bacteria and methanogens break the biodegradable material down into usable gas.
Composition and environmental impact
What biogas is made of
Primarily methane (CH₄) and carbon dioxide (CO₂), with small amounts of hydrogen sulfide, moisture and siloxanes.
The methane imperative
Uncontrolled methane has a greenhouse effect around 104 times stronger than CO₂ over the short term. Captured and utilised, it becomes an effective low-carbon fuel instead of a climate liability.
Applications
Electricity & Heat Generation
Biogas fuels gas engines to generate electricity and thermal energy on site.
Biomethane Production
Cleaned and upgraded to natural-gas standard, biomethane can be injected into the gas grid or used as transport fuel — a sustainable alternative to fossil gas.
Sustainability and the circular economy
Biogas and biomethane combine waste management, greenhouse-gas reduction and sustainable energy production in one closed loop — essential components of the circular economy and the energy transition, supporting carbon neutrality and energy security.
Discuss this with our senior team
Direct, confidential and grounded in 28 years of renewables experience.