Biogas 

Sener is at the forefront of biogas engineering in Spain and Europe. Our recent contract with Ence Biogas covers the conceptual, basic, and detailed engineering of six biomethane plants across Spain. Once in operation (2025–2026), they will inject around 300 GWh of biomethane per year into the national gas grid and generate 90,000 tonnes of biofertilizer annually for agricultural use.

Why choose us 

Our plants not only deliver biomethane to the grid but also produce fertilizers that return nutrients to the soil. This integration of energy and agriculture closes the loop of the circular economy, turning waste into two essential resources. By embedding sustainability into every design, we create infrastructures that reduce emissions while providing economic benefits for local communities.

How we work 

Our methodology combines process know-how with multidisciplinary engineering. In the early stages, we study feedstock availability, logistics, and regulatory frameworks. During design, our teams model anaerobic digestion, gas upgrading, and storage systems to maximize efficiency. Implementation is managed under EPC contracts with strict quality and safety standards. In the operational phase, we provide digital monitoring and predictive maintenance to ensure consistent output and regulatory compliance.

We deliver long-term competitiveness through flexible design

We prepare each biogas facility for future integration with renewable gas networks. By designing modular systems, we enable capacity expansion as feedstock availability grows. Our projects also incorporate digital control systems that optimize digestion and upgrading, improving efficiency and reducing operational costs. This ensures that biomethane remains competitive and reliable over the long term.