All subjects
Opinion & commentary

Anaerobic digestion dangerously overlooked as immediate mitigation solution – WBA warns

With the recently published Inter-Governmental Panel on Climate Change (IPCC) sixth assessment report alarming on climate change, the World Biogas Association (WBA) has renewed its call for the potential of the biogas industry to be urgently unlocked so that it can help deliver the “strong, rapid and sustained" reductions in greenhouse gas (GHG) emissions and in particular methane (CH4) that the IPCC says is needed to address the climate emergency.

A Global Methane Assessment released on May 6, 2021, by the Climate and Clean Air Coalition (CCAC) and the United Nations Environment Programme (UNEP) shows that human-caused methane emissions can be reduced by up to 45 percent this decade. Such reductions would avoid nearly 0.3°C of global warming by 2045 and would be consistent with keeping the Paris Climate Agreement’s goal to limit global temperature rise to 1.5 degrees Celsius (1.5˚C) within reach (graphic courtesy CCAC/UNEP).

The WBA call amplifies recommendations by the UN Environment Programme (UNEP) and Climate & Clean Air Coalition (CCAC) that said that tackling methane emissions was the most immediate and cost-effective way to avert climate catastrophe. They identified anaerobic digestion (AD) as a readily available low-cost technology that can help reduce these emissions.

The International Energy Agency (IEA) has also recognized the value of biomethane in decarbonizing the energy sector, whilst the EU has embraced it in its Methane Strategy.

Research from the WBA and other biogas trade bodies, and from UNEP, CCAC and the IEA, has demonstrated our industry’s potential to deliver a huge reduction in global GHG emissions, especially methane, within the next few years. Crucially, anaerobic digestion, the technology that produces biogas – also known as renewable natural gas or biomethane – as well as a biofertiliser, bioCO2 and other valuable bio-products, is ready to deliver on that potential now. What is badly missing is the political will to remove policy barriers to the growth of the sector – both at global and national levels, said Charlotte Morton, WBA Chief Executive.

According to the WBA, human activity produces 105 billion tonnes of organic wastes every year globally. By treating these wastes through AD, as well as producing green gas and other valuable bioproducts, the biogas industry could deliver a reduction of over 10 percent in global GHG emissions by 2030.

AD technology also plays a vital role in decarbonizing agriculture – which by itself generates nearly 20 percent of global GHG emissions.

As the UK prepares to host a particularly critical COP26, and given the widely recognised opportunity to address methane emissions through AD, the British government must show the leadership required in speedily committing to an integrated strategy that will deliver the full potential of AD in the UK by the end of the decade and in ensuring that all other countries follow suit. Without AD fully deployed, it will simply be impossible to keep below 1.5 degrees by 2030, nor to achieve Net Zero by 2050. Such commitments need to be in each country’s Nationally Determined Contributions (NDCs) to the Paris Agreement – almost all of which are still failing to deliver on the targets set in 2015, Charlotte Morton said.

The WBA urges policymakers to recognize the vital role of AD as an immediate solution to reducing GHG emissions worldwide.

With its latest report, the IPCC has just issued its starkest warning yet of the danger of climate change and of the need to act urgently. We are today issuing our own warning to world governments that it is dangerous to overlook the recognized power of AD as an immediate solution. With the right policy framework in place, AD can cut emissions by 10 percent by 2030. The global biogas industry has already made a public commitment to play its role to deliver on this potential. Now it is down to the world’s politicians. We’re here, we’re ready – we’re waiting for your commitment, and the world needs it now, ended Charlotte Morton.

Most read on Bioenergy International

Get the latest news about Bioenergy

Subscribe for free to our newsletter
Sending request
I accept that Bioenergy International stores and handles my information.
Read more about our integritypolicy here