By
12 min ago 3 min read
UK-based biotechnology company BioteCH4 has acquired five biogas upgrading units from Air Liquide UK, taking ownership of the equipment and associated commercial arrangements across five renewable gas sites.
Under the deal, the assets serve Hemswell Biogas, Local Generation, Thornfield Energy, Holme Bioenergy and R100 Energy. The transaction includes associated gas and certificate sales contracts, transferring ownership and operation of the assets to BioteCH4. Financial terms were not disclosed.
“Bringing these upgrading units and associated commercial arrangements under BioteCH4 Group ownership supports our strategy of investing in and optimising our biogas portfolio,” said CEO Christer Stoyell.
The deal follows Air Liquide’s wider divestment of biogas production assets in the US and Europe. In May, the industrial gas major of production and distribution assets in the US, France, Norway and Sweden to Mobius Renewables. Air Liquide said the transaction reflected its strategy to create value and actively manage its portfolio.
Reuters reported in September 2025 that Air Liquide was exploring a sale of its biomethane assets as it focused on its core businesses of supplying gases to large industries and healthcare. The report said the portfolio could be valued at around €500m ($557m), depending on the assets included.
Before the earlier divestment, Air Liquide operated 29 biomethane production units across Europe, China and the US.
The acquisition comes amid growing interest in upgrading existing biogas infrastructure to produce biomethane, allowing producers to expand renewable gas output without building entirely new plants.
According to BCC Research, the global biogas upgrading market is projected to roughly from $2.1bn in 2025 to $4.1bn by 2030.
Europe has around 21,000 anaerobic digestion (AD) and biogas plants, most of which were originally built to generate combined heat and power rather than biomethane.
Across the EU, of existing biogas plants have been upgraded to produce marketable biomethane, leaving considerable scope to modernise existing facilities.
In the UK, more than 500 smaller green gas and AD plants are estimated to face potential closure or major investment to overhaul ageing equipment.
