Comprehensive Biometanization Services
Since 2010, the Sanchiz Becquet Group
has been developing sustainable solutions
in the energy sector
Through our specialized companies — Hispania Silva, Bioeco Energías, Recycle Logística, Biocompost, and Renewable TNG — we take a comprehensive approach to the biomethane cycle: from engineering, waste management, and energy and agronomic valorization, to staff training and the management of human resources required for operations.
Currently, we are driving the development of more than 36 biomethane plants nationwide.
14 years leading renewable energy, with the best partner by our side
14 years
of a sustainable
track record
Featured News:
Brain Recycle
Intelligent management system
Digitally connects all our biogas plants and the various stakeholders involved in the organic waste value chain, from its origin to its final recovery.
Subvenciones disponibles
- Up to €30,000 for private entities
- Up to €50,000 for public entities
Sustainable Services for Organic
Waste Management:
One solution for every need
For Municipal Councils and Local Authorities
Do you want a more sustainable municipality?
We offer you a sustainable solution: biomethanation transforms organic waste into renewable energy, reducing emissions and improving environmental management.
Municipality
For Industries Generating Organic Waste
Does your company generate organic waste?
We turn it into a valuable resource with high-performance, low-environmental-impact solutions. Increase your efficiency and reduce your environmental footprint.
Waste producer
For Waste Management Companies
Are you looking for new ways to add value to your organic waste?
As a strategic partner, we help you integrate biometanization technology into an efficient, profitable model aligned with the circular economy.
Waste manager
We offer comprehensive
BIOMETANIZATION services
Specialists in circular economy
HOW DO WE DO IT?
WITH OUR SPECIALIZED COMPANIES
Our model ensures safety and sustainability
ENGINEERING SERVICES:
We develop Sustainable Energy projects
Specialized engineering in the development of renewable gas plants.
We design efficient and sustainable solutions for energy production, developing and implementing projects tailored to each need while maximizing the use of organic waste.
Project development
OPERATION SERVICES:
Specialists in Biomethane
Operations
WHAT IS BIOMETHANE?
Clean, renewable, and carbon-neutral gas
It is produced from organic waste such as food scraps, manure, sludge, or agricultural residues.
Decarbonization
The most sustainable solution
What produces biomethane?
GNC/GNL
GREEN
HYDROGEN
E-METHANOL
GREEN CO2
RENEWABLE GASES
WATER FOR IRRIGATION
COMPOST AND BIOFERTILIZER
RECOVERABLE WASTE
WHAT TYPE OF WASTE DOES A PLANT UTILIZE?
THE RESULTING DIGESTATE
IS TRANSFORMED INTO:
LOCAL COMPOST
RECLAIMED WATER FOR IRRIGATION
HIGH-QUALITY ORGANIC FERTILIZERS
Social advantages
Improvement of public health
Environmental education and social awareness
Reduction of energy dependence
Local job creation
Stability for the agri-food sector
Promotion of the circular economy
Environmental advantages
Reduction of greenhouse gas emissions
Reduced waste disposal
Improvement of organic waste management
Reduction of odors and pests
Renewable energy utilization
Protection of water
and soil
Creation of green gases
Production of natural compost and biofertilizers
STOP
GREENHOUSE GASES
Frequently asked questions
Questions and concerns that may arise from the local population regarding the renewable gas plant
No. The plant is designed with advanced technology to operate without generating odors or nuisances.
How do we achieve this?
Closed facilities: All waste is handled in sealed environments, with no exposure to open air.
Air treatment: All potentially contaminated air is filtered before being released.
What technologies do we use?
Activated carbon filters: Remove corrosive gases such as hydrogen sulfide (H₂S) and siloxanes—microscopic particles that, when burned, can damage equipment.
Natural biofilters: Eliminate odors and organic compounds using microorganisms.
Both systems work together to ensure clean, odor-free air.
How do we prevent potential leaks?
The plant is airtight and includes:
Gas capture at the source
Detectors in critical areas
Monthly safety inspections
Benefits for the community
Without a biogas plant = more odors
Uncollected organic waste ferments in the open air, without control.
This generates unpleasant smells, attracts flies, and poses health risks.
With a biogas plant = control and fewer odors
Waste is treated in closed tanks, isolated from the air.
Filters and ventilation systems remove odors.
Waste is transformed into energy and fertilizer—without unpleasant smells.
Conclusion:
Leaving organic waste untreated is worse. A well-designed plant reduces odors and improves the environment.
No. On the contrary, the plant is designed to prevent and control them at all times.
This plant not only does not pollute, but also prevents emissions that are currently being generated without control.
When organic waste decomposes in the open air — in landfills, lagoons, or fields — it releases methane, a greenhouse gas 28 times more potent than CO₂.
Instead of letting that gas escape into the atmosphere, our plant captures it and transforms it into biomethane, a renewable, clean, and decarbonized gas that can replace fossil fuels.
How do we ensure there are no emissions?
The plant is equipped with a centralized control system (SCADA) that allows continuous and precise monitoring.
Gas sensors and smart alarms connected to the system allow us to:
• Visualize concentrations in real time
• Record events and maintain traceability
• Automatically activate ventilation or safety shutdowns if necessary
Result:
No uncontrolled emissions
Immediate response to any irregularity
Maximum safety for the environment and nearby residents
What does our plant do?
It captures methane before it escapes into the atmosphere. It purifies it and converts it into biomethane, a 100% renewable and decarbonized gas. It replaces fossil fuels, further reducing emissions.
The result:
Fewer greenhouse gases. More clean energy for the municipality. Responsible waste management with no negative impacts on the environment.
In summary:
The plant does not generate polluting emissions. It prevents, transforms, and converts them into a local energy solution.
It is a project designed to protect the environment, safeguard public health, and contribute to a circular economy at the service of the municipality.
No. The plant is designed to protect the environment from day one.
All processes are carried out on waterproof platforms equipped with systems for the collection and management of leachate (wastewater from the process), preventing any filtration into the ground or subsoil.
In addition:
There are no discharges into the soil or groundwater. The digestate, both solid and liquid, is stored and treated under strict quality controls. The entire system complies with European and national environmental regulations, which require technical safeguards to prevent any kind of contamination.
In summary:
The plant is designed to protect the soil, water, and public health, ensuring safe, clean, and continuously monitored operation.
It is an infrastructure created to solve an environmental problem — not to cause one.
No. The plant neither promotes nor depends on the installation of large-scale farms.
Its main function is to valorize the organic waste that already exists in the area, such as agricultural residues, municipal waste, and manure from current livestock farms.
It does not generate more waste, nor does it encourage intensive livestock farming.
On the contrary, this plant can be a tool to improve the environmental management of existing livestock waste, helping to:
Reduce odors. Avoid improper discharges. Decrease the environmental burden on soil and water
In summary:
The plant is not linked to new large-scale farms, but to a more responsible and sustainable management of the waste that is already part of daily life in the area.
It is an opportunity to turn a problem into a clean, controlled, and beneficial solution for the municipality.
Is slurry the most useful waste for the plant?
No. Slurry by itself is not the most suitable waste to produce biomethane.
Although it can be used, its gas generation capacity is low compared to other wastes such as food scraps, sewage sludge, or agro-industrial residues.
In other words, slurry is not the main raw material for this type of plant.
However, in combination with other wastes, it can be part of the solution to improve environmental management and reduce its impact.
No. The plant is designed to serve the nearby area.
The waste to be treated will be mainly local, collected within a radius of 15 to 60 km, which guarantees:
A model of local circular economy. Less heavy traffic and fewer emissions from transport. Greater control over the type and origin of the waste.
In summary:
This plant will not turn the municipality into a landfill for external waste, but into an example of responsible, modern, and sustainable management of the waste already generated in the area.
The project design includes specific access routes that completely avoid truck traffic through the town center, thus eliminating any impact in terms of noise, traffic, or damage to municipal roads. This criterion has been considered since the preliminary siting phase, analyzing all possible routes to ensure efficient logistics without affecting the local population.
The plant provides multiple direct and sustainable benefits to the municipality, both economically, environmentally, and socially:
Local job creation: direct jobs will be created during the construction and operation phases; at least 5 workers are projected, but we estimate around 8–10 people will work. Indirect employment will also be generated in associated sectors (transport, maintenance, auxiliary services, etc.).
Positive fiscal impact: the municipality will receive income from fees, licenses, and taxes related to industrial activity, helping to strengthen municipal finances.
Support for the local economic fabric: priority will be given to contracting local suppliers, companies, and services, promoting the circular economy and boosting local activities.
Local benefits:
High-quality organic fertilizers: access to sanitized and controlled digestate, which improves soil fertility and reduces dependence on chemical fertilizers.
Professional and sustainable waste management: we offer comprehensive solutions for agro-food, agricultural, livestock, forestry, and sludge waste, reducing costs and environmental risks.
Circular use: transformation of by-products into useful resources, promoting the circular economy in the sector.
Commitment to the territory: this is not a speculative plant, but an industrial project with a long-term vision, committed to sustainability and generating added value in the area where it is located.
The plant will occupy a surface of 3 hectares and will be located outside the urban area, in a strategically selected zone to minimize any visual or environmental impact.
The design includes landscape integration through vegetation barriers, natural screening, and the use of the local topography, which will allow the facility to be visually camouflaged within the surroundings.
The aesthetics will be discreet, with the image of a low-profile agro-industrial infrastructure, using materials and colors in harmony with the surrounding rural landscape. No impact is expected on elements of heritage, cultural, or landscape value.
This approach reflects the project’s commitment to a responsible implementation that is respectful of the environment and the local population.
No. One of the fundamental criteria in selecting the site has been to avoid any impact on wildlife and the natural environment.
The chosen location is not within protected areas, such as the Natura 2000 Network or ZEPA zones (Special Protection Areas for Birds).
Furthermore, the plant’s design will follow minimum environmental impact criteria, including preventive and corrective measures to avoid any possible disruption to the local ecosystem.
This approach reflects the project’s commitment to protecting the environment and respecting the ecological balance of the territory.
Can the plant improve local wildlife?
Yes. Far from being a threat, a well-designed biomethane plant can promote local biodiversity:
• Soil improvement: by replacing chemical fertilizers with natural digestate, soil life and vegetation are restored.
• Wildlife refuge: vegetation barriers and green areas around the plant create habitats for birds, insects, and small animals.
• Less diffuse pollution: by treating waste in a controlled manner, the proliferation of pests and bad odors that affect wildlife is avoided.
In short, it is a facility that coexists with its surroundings and can enhance them, contributing to a cleaner, more vibrant, and sustainable rural model.
No. The biogas plant is not only compatible with tourism, but it actively contributes to improving the environment and the municipality’s environmental quality.
By treating organic waste in a controlled and efficient manner, common problems such as odors, uncontrolled discharges, or the proliferation of vectors (flies, rodents) are avoided, creating a cleaner, healthier, and more orderly environment, favorable both for residents and visitors.
The plant will be located outside the urban center and integrated into the landscape, without interfering with the main tourist sites or the municipality’s image.
Moreover, this type of facility reflects a clear commitment to sustainability, the circular economy, and responsible territorial management, aspects increasingly valued by responsible tourism.
These initiatives position the area as an example of modern, active rural development with a forward-looking vision, which can attract both tourism and new economic and social opportunities.
No. The biogas plant does not pose a threat to tourism; on the contrary, it can become an added value for a sustainable development model in the municipality.
By promoting responsible organic waste management and renewable energy production, the municipality demonstrates a real commitment to sustainability, an aspect increasingly valued by society.
Such projects reinforce the identity of a modern municipality, aligned with current environmental challenges, without compromising its surroundings or natural resources. The plant will be located outside the urban center and integrated into the landscape, without interfering with the main tourist attractions.
In short, the facility does not compete with tourism, but contributes to consolidating a cleaner, more efficient territory, aligned with the values that both residents and visitors expect today.
No. The plant is economically viable on its own, without the need for subsidies for its operation or long-term sustainability.
Its profitability is based on a solid model of biomethane production and commercialization, which is either injected directly into the gas network or sold as renewable gas, generating stable and continuous income thanks to the growing demand for green energy.
In addition, the process produces a high-quality natural biofertilizer (digestate), which can be used in agriculture as a substitute for chemical fertilizers. This represents an additional value, both economically and environmentally, enhancing soil fertility and reducing the ecological footprint.
This approach ensures that the project is solid, autonomous, and sustainable over time, without relying on public funds or compromising municipal resources.
No. The plant is economically viable on its own thanks to the sale of biomethane injected into the network. Subsidies are neither necessary nor planned for the plant’s operation.
The project is designed to be stable, secure, and with guaranteed continuity, regardless of the initial promoter.
In the event that they could not continue, the plant could be transferred to another energy operator with experience and capacity, as is common in the sector. This type of infrastructure has high strategic value and can be easily taken over by other actors in the energy market.
In addition, everything is regulated through contracts, administrative licenses, and legal guarantees that ensure the correct operation of the plant in any scenario.
As an additional safety measure, the operator is required to deposit a specific financial guarantee intended for the dismantling of the plant if necessary in the future. This guarantee protects the municipality and prevents any possible economic or environmental burden.
In summary, the municipality is fully protected against any eventuality, and the project has solid mechanisms to ensure its continuity and responsible closure if it were ever to cease operations.
All responsibility lies exclusively with the operating company, Naturgy, an energy group of reference with more than 25 years of experience in renewable energies and a solid track record in sustainable projects at both the national and international levels.
The City Council assumes no responsibility in the event of non-compliance. The plant operates under a strict legal framework regulated by the environmental authorities of the autonomous community, the State, and, where applicable, European regulations.
Naturgy invests significant technical and financial resources in each project and cannot afford any action that would compromise its reputation or the image of a publicly traded company with high standards of regulatory compliance, transparency, and sustainability.
In addition, the plant will be subject to periodic environmental inspections, rigorous technical controls, and external audits. The operator must present civil liability insurance and financial guarantees to cover any contingency, including environmental damage or dismantling.
In summary:
Responsibility lies with Naturgy. The regulations are public. Oversight is permanent. And the municipality is completely protected.
The submitted project indicates that at least 5 people will work at the plant, but it is estimated that the facility will ultimately generate around 8–10 direct jobs related to operation, maintenance, and process control. In addition, up to 20 indirect jobs will be created, mainly linked to the transportation of raw materials and by-products.
Furthermore, local employment will be activated in auxiliary services such as cleaning, security, facility maintenance, agricultural support, and in technical professions such as electricians, plumbers, welders, mechanics, and industrial operators — both during the construction phase and throughout the plant’s operational life.
The company is committed to prioritizing the hiring of local workers, collaborating with local businesses, self-employed professionals, and municipal services, thereby promoting the local economy.
Beyond the immediate employment impact, this plant represents a new long-term opportunity for the municipality, linked to renewable energy and the circular economy. It is a real opportunity to diversify the local economy, retain young talent, and strengthen a modern, sustainable, and forward-looking model of rural development.
Inside the digesters, there are local organic residues that decompose in the absence of oxygen through a natural process called anaerobic digestion. This process generates biogas, composed mainly of methane (CH₄) and carbon dioxide (CO₂).
The plant is designed with the highest industrial safety standards. The biogas is stored under completely controlled conditions, with sensors, pressure relief valves, ventilation systems, and automatic emergency protocols. In addition, the entire system operates at low pressure, which further minimizes any risk.
The goal is to convert waste into clean energy safely and in a way that respects both the community and the environment. The safety of people and the environment is always the project’s number one priority.
In our plant, the biomethanization process not only generates clean energy, but also produces a highly valuable by-product: digestate, a 100% natural and safe material that becomes a useful resource for local agriculture.
This digestate is carefully treated and separated into two fractions:
• The solid fraction is transformed into high-quality compost and biofertilizers, ideal for enriching soils, improving agricultural yields, and reducing dependence on chemical fertilizers.
• The liquid fraction undergoes advanced treatment until it meets the necessary conditions to be reused as agricultural irrigation water, promoting efficient water use and closing the cycle responsibly and sustainably.
A circular and sustainable solution:
All digestate is revalorized — none is discharged or pollutes the environment. This means zero waste and zero negative impact on the natural surroundings. Moreover, the process is fully controlled and odor-free, ensuring harmonious coexistence with the community.
Direct benefits for local farmers:
The products derived from digestate — compost and biofertilizers — will be available for purchase by local farmers. These are more affordable, eco-friendly, and effective inputs than traditional fertilizers, helping reduce costs, improve soil health, and promote more sustainable farming.
This model offers a direct opportunity for local agriculture, providing a locally produced input with full traceability, guaranteed quality, and a lower environmental impact.
Yes, in fact, municipal pruning residues represent a key opportunity to move toward more efficient, economical, and sustainable waste management.
The plant is designed to utilize shredded pruning residues and other plant waste, integrating them into two complementary processes:
• Part of these residues can be used as structuring material in the digesters, improving the performance of the biomethanization process and helping generate more renewable energy.
• The majority can be valorized during the digestate composting stage, where they provide structure, carbon, and aeration, supporting the production of high-quality compost.
This allows green waste to have a second life, transforming it into energy and natural fertilizers instead of burning it or sending it to landfill, resulting in significant economic and environmental savings.
Benefits for the municipality:
• The City Council will not incur any additional costs for managing these plant residues, as they will be absorbed by the plant as raw material.
• Pressure on cleaning and collection services is reduced, avoiding more costly or polluting treatments.
• A waste product is transformed into useful community resources: green energy, compost, and irrigation water.
In short, this solution turns a common municipal problem — managing pruning residues — into a tangible advantage, at no cost, with environmental benefits and a direct positive impact on local sustainability.
No. Not at all.
The plant is not authorized, not prepared, and has no intention of handling hazardous waste, and this is guaranteed for several fundamental reasons:
• No hazardous waste codes (LER) have been requested — nor will they be requested.
• Current regulations expressly prohibit the entry of hazardous waste into this type of facility.
• Most importantly, the project is exclusively designed to manage local, controlled, non-hazardous organic waste.
What waste will be treated then?
Only organic, biodegradable, and safe waste, such as:
• Agro-industrial residues (fruit and vegetable leftovers, olive pomace, marc, by-products from juice factories, canning, etc.)
• Fresh horticultural and fruit residues
• Vegetal waste and municipal pruning residues
• Livestock waste (organic materials generated in local farms)
And most importantly:
The majority of this waste will come from the municipality itself or its nearby surroundings.
This ensures the plant does not become a magnet for waste of unknown or distant origin. On the contrary, the priority is to provide a local solution for a local problem, supporting the agricultural, livestock, and agro-industrial sectors in the area.
Maximum safety and transparency
• All waste entering the plant is pre-identified, classified, and validated, strictly complying with regulations.
• The plant’s operation is subject to constant technical and environmental controls, both internal and by public authorities.
• There is no generation of unpleasant odors, and the facility is designed to fully integrate with the environment and the community.
The implementation of this plant not only generates environmental and social benefits, but also direct income for the municipal treasury.
Guaranteed fiscal income for the City Council:
• Payment of ICIO (Tax on Construction, Installations, and Works): a significant financial contribution during the construction phase.
• Payment of IAE (Tax on Economic Activities): an annual contribution throughout the plant’s operational life.
• Municipal fees related to licenses, administrative procedures, and services.
These revenues represent a stable source of municipal funding, which the City Council can use to improve infrastructure, public services, or local sustainability projects.
Additionally, the plant can actively collaborate with the municipality through:
• Specific collaboration agreements, such as providing treated water for irrigation of green areas or local agriculture.
• Availability of compost and biofertilizers derived from digestate at preferential prices for local farmers.
• Management of municipal waste, especially pruning residues and vegetal waste, at no additional cost to the City Council.
In summary, this plant does not represent an expense for the municipality, but generates fiscal income, opportunities for public-private collaboration, and direct benefits for the local agricultural sector and community.
It is an investment in sustainability that also yields economic returns for the region.
Yes. One of the pillars of the project is its focus on local integration and commitment to the territory.
The plant not only represents an environmentally responsible solution, but also an opportunity for economic dynamization for the municipality and its people. From the construction phase to daily operation, priority will be given — whenever feasible — to hiring local staff for the various jobs generated by the facility.
Additionally, the project will encourage the use of local suppliers and services, boosting the local economy and creating positive synergies with companies in the municipality and the surrounding region.
Proximity, participation, and transparency
• Information and dialogue spaces are being promoted with the City Council and citizens to explain the project, answer questions, and gather suggestions.
• The plant will maintain an open and collaborative approach, seeking to generate shared value with the community over time.
In short, this is not an external project simply being installed: it is an initiative that aims to contribute to local development, create opportunities, and be an active part of the municipality’s future.
