Advanced Technology for Full Biogas Recovery  

By Waga Energy

Waga Energy has become a key player in the valorization of biogas from municipal landfill sites, leveraging a modular approach and innovative expertise in gas engineering.

Each site is analyzed to implement the most effective solution, optimized in size and location, to maximize revenue, ensure compliance, and enhance operational efficiency.

The biogas from landfill sites is highly variable (nitrogen, oxygen, sulfur compounds, siloxanes, etc.), making treatment complex.

To address these challenges, Waga Energy developed the WAGABOX® technology — a patented, proprietary system that combines membrane separation and cryogenic distillation to upgrade biogas into grid-quality biomethane.

The WAGABOX® technology is designed to efficiently upgrade landfill gas containing up to 30% nitrogen and 3.5% oxygen without compromising performance. Because landfill gas composition naturally fluctuates, nitrogen levels can exceed the typical 9% limit that other upgrading technologies can tolerate.

Robust and reliable, the WAGABOX® technology upgrades landfill gas with luctuating composition and can also recover energy from a mixture of sources, including landfill gas and biogas from anaerobic digestion. Its modular design allows it to adapt to gas quality and flow changes over time.

In addition to its technology, Waga Energy supports its public and private partners with regulatory, economic, and environmental expertise, from feasibility studies to long-term operations.

VALTOM Project: A First in Europe

The project illustrates this expertise, which was carried out with VALTOM, the Puy-de-Dôme and Haute Loire waste management association in France. This is the first unit in Europe to simultaneously process two biogas streams: that from the Puy-Long storage site and that from the Vernéa methanization unit.

This unprecedented project required four years of consultation to adapt the regulatory framework, culminating in a contract signed in 2022 and commissioning at the end of 2024.

Thanks to its flexibility, the unit will continue operating even if gas volumes change, seamlessly treating only landfill gas or methanization gas if needed (in “single gas” mode).

It produces up to 15 GWh/year of RNG, equivalent to the consumption of 2,000 homes or sixty buses on BioGNV, and avoids the emission of 2,500 tons of CO₂ equivalent emissions each year.

This project represents a tangible example of a circular economy, carbon neutrality, and innovation supporting local communities.

Waga Energy: A Committed Partner for a Sustainable Future

By combining technological innovation with deep industry expertise, Waga Energy provides landfill operators and waste management organizations with high-performance solutions to maximize biogas’s environmental and economic value.

With a proven track record across multiple continents, Waga Energy is helping drive the transition to renewable energy, reduce greenhouse gas emissions, and build a more resilient, sustainable future for communities worldwide.

For more information, read our European Biogas Magazine.