1. Home
  2. What we do
  3. Trading & shipping
  4. Biogas sites

Biogas sites

Biogas or Renewable Natural Gas (RNG) is a key emerging fuel derived from waste and can be transported through existing natural gas pipelines. When used to fuel natural gas vehicles, it reduces greenhouse gas (GHG) emissions by 95% or more on a lifecycle basis compared with diesel.


Through our joint ventures with Aria Energy and Clean Energy Fuels Corp, bp owns operating facilities that capture methane from waste to produce renewable natural gas (RNG) — or “biogas” — for the US transportation sector.


In support of bp’s ambition, the biogas strategy is focused on growth. Our trading team currently has 24 flowing biogas offtake agreements with various facilities across the US – and another 15 contracted to flow in the future.

Reducing emissions across sectors

Agriculture accounts for nearly 10% of US greenhouse gas emissions, according to the US Environmental Protection Agency. Capturing methane from farm waste can lower these emissions.


The process begins with anaerobic digestion, which involves microorganisms breaking down biodegradable material in a closed system called a digester. One of the end products is biogas, primarily methane, which can be processed into RNG and used to fuel vehicles.


RNG-fueled vehicles are estimated to result in up to 95% emissions than those fueled by gasoline or diesel on a lifecycle basis, according to a US Department of Energy study.

Our joint ventures

Mavrix, our joint venture with Aria Energy, owns RNG production facilities in Michigan, Oklahoma and two facilities in Tennessee.


It also recently broke ground on three new projects with Aligned Digesters to capture methane from waste at three dairy farms in California’s Central Valley and process it into RNG for transportation fuel. The farms will use digesters to produce biogas from farm waste which would otherwise have been allowed to decompose and release methane into the atmosphere.


In addition to Mavrix, bp also finalized another joint venture with Clean Energy Fuels to develop, own and operate new RNG projects at agricultural facilities, including dairies, to produce RNG using the methane captured from farm waste.


Known collectively as RNG Moovers, these projects combine the expertise of three companies. Aria Energy is providing its skill in capturing biogas released from organic waste, refining it to remove contaminants and increasing its heat content, resulting in RNG. Aligned Digesters is contributing both its proven experience constructing and operating digesters and its decades-long relationships with dairy owners nationwide. bp is delivering the RNG to America’s transportation sector through a 20-year offtake agreement executed by its low carbon trading business.