Asterion Industrial Partners has committed €1.5 billion to its European biomethane platform, ABIO (Asterion Bioenergy), with the aim of creating a leading pan-European player in renewable gas, according to a company press release.

The investment package includes €800 million in equity, consisting of €400 million from Asterion Industrial Infra Fund III and an additional €400 million in co-investment commitments from existing investors. The capital will support the development and operation of biomethane assets across key European markets, following strategies adapted to local market conditions.

ABIO is currently operating six biomethane plants across Europe, with six additional facilities under construction. The platform has completed nearly ten transactions in recent months, including greenfield developments, acquisitions and asset conversions. According to Asterion, ABIO is on track to reach 20 operational biomethane plants by the end of 2026.

“ABIO represents exactly the type of platform we seek to back: scalable, capital-efficient and positioned at the intersection of the energy transition and long-term infrastructure demand,” said Jesús Olmos, CEO and Founding Partner of Asterion Industrial Partners.

With this funding and its current development pipeline, ABIO is expected to achieve a biomethane production capacity of around 3 TWh within the next three to four years, strengthening its contribution to Europe’s energy transition.

Winnie Wutte, Founding Partner of Asterion Industrial Partners, highlighted investor confidence in the sector, stating that the capital raise reflects strong conviction in biomethane as a scalable and strategic solution for decarbonisation, energy security and sustainable waste management.

A growing pan-European footprint

ABIO has established operations in five key European markets — Iberia, Italy, Germany, the Benelux region and the United Kingdom. In more mature markets in Central and Northern Europe, growth is primarily driven by acquisitions and the conversion of existing assets, while in Southern Europe the focus remains on greenfield developments. Operations are managed through local platforms supported by specialised teams in each country.

“ABIO is scaling with discipline, combining a visible development pipeline with selective acquisitions to build a diversified, pan-European biomethane platform with strong long-term fundamentals,” said Irene Otero-Novas, CEO of ABIO and Operating Partner at Asterion Industrial Partners.

In Iberia, ABIO operates through FiveBioenergy, where two biomethane plants are currently under construction and at least two additional projects are expected to begin construction during 2026. In Italy, the platform owns Fiamma Verde, with four assets under construction and scheduled to enter operation in 2026.

In the Benelux region, ABIO operates under Byont, where two operational plants are being converted from power generation to biomethane production, alongside a third large facility undergoing upgrades. In Germany, the platform operates through Byont DE, with two Bio-LNG plants already in operation. The UK business is conducted via Pinta Energy, which currently operates one biomethane facility and is targeting further projects.

Circular economy strategy

According to the company, ABIO follows a fully integrated circular economy model, converting agricultural residues into renewable biomethane, captured CO? for industrial use and digestate, a natural fertiliser. Biomethane is increasingly seen as a key decarbonisation solution due to its ability to replace natural gas using existing infrastructure while addressing agricultural waste management challenges.

Looking ahead, Asterion aims to operate 40 biomethane plants across Europe by 2030, producing up to 3.5 TWh of biomethane annually — equivalent to the energy consumption of more than 220,000 households — and avoiding up to 8 million tonnes of CO?-equivalent emissions.