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WireTarp ® concrete protection

FOUR DECADES OF MEMBRANE ENGINEERING: HOW AGROTEL CENOTEC IS SHAPING THE FUTURE OF BIOGAS AND INDUSTRIAL TEXTILE SYSTEMS

AGROTEL CenoTec is a leading German manufacturer of high-quality technical textiles and customized membrane systems. For more than 40 years, the company has been developing and producing innovative solutions for the biogas and renewable energy sector as well as textile building systems for industrial and agricultural applications.

Their core expertise lies in the engineering, manufacturing and installation of double membrane gasholders on fermentation tanksfree-standing gasholdersmembrane roofs for emission protectionearth basin liners for large-volume substrate storage and our customized concrete protection systems WireTarp® and SaniTarp®, which reliably protect tanks against corrosion. In addition, our textile building systems provide versatile storage solutions for organic materials, construction materials, machinery and industrial goods.

With customers in more than 60 countries, AGROTEL combines German engineering expertise with durable materials and customer-specific solutions designed for long-term performance. Their quality management and environmental management systems are certified in accordance with ISO 9001 and ISO 14001.

What are the main areas of activity of the company?

Our business is focused on two major fields.

The first is the development and production of gas storage solutions for biogas, biomethane and renewable energy plants. Our portfolio is led by customized tank mounted double membrane gasholders and free-standing gasholders with a very large storage capacity, enabling flexible plant operation.

A further area of expertise is the protection and rehabilitation of concrete structures in the biogas sector. With our patented SaniTarp® system, existing concrete tanks can be sustainably refurbished and protected against corrosion, significantly extending their service life. Our patented WireTarp® solution is integrated during the construction of new concrete tanks, providing long-term protection from the outset. Both systems help reduce maintenance requirements, preserve valuable infrastructure and support a more sustainable use of resources.

The second business area comprises textile buildings and membrane structures for industrial, agricultural and commercial applications. These buildings offer cost-efficient, durable and flexible storage solutions that can be adapted to individual customer requirements.

Besides manufacturing, we provide engineering, project planning, installation and comprehensive after-sales support.

External double membrane gas storage with > 45.000 m3 storage capacity

What’s the news about new products/services?

Innovation is a key driver of our product development. We continuously enhance our solutions to meet the growing demands for safety, efficiency and sustainability in the biogas and industrial sectors.

One of our latest developments is the implementation of gas storage systems with exceptionally large storage capacities of more than 45,000 m³, including customized geometries for complex project requirements. Despite their size, these systems are designed to ensure maximum operational safety and long-term reliability. This is ensured by our innovative Airflow air supply and exhaust system. By providing a more uniform distribution of the supporting air, it significantly improves the stability of the double membrane structure, even under demanding weather conditions. The optimized airflow also contributes to reliable operation and extended service life.

Another important innovation is our patented SaniTarp® concrete protection system for the refurbishment of existing biogas tanks. The gas-tight, chemically resistant PP coating on a stable fabric protects not only the tank wall, but also the tank supports and crown. Its quick, weather-independent installation minimizes plant downtime while providing long-term protection against corrosion and chemical attack.

Together, these innovations reflect AGROTEL CenoTec’s commitment to combining engineering excellence with practical, sustainable solutions that create long-term value for our customers.

Double membrane gas storages (freestanding)

What are the ranges of products/services?

Summary of our product portfolio in the field of environmental technology:

All products are individually designed according to customer requirements and comply with the highest quality and safety standards.

What is the state of the market where you are currently active?

The market for renewable energy solutions continues to show strong long-term potential. As energy systems become increasingly dependent on fluctuating renewable sources such as wind and solar, biogas is playing a key role by providing dispatchable, reliable energy whenever it is needed.

What can you tell us about market trends?

The growing demand for flexible plant operation is driving the need for large-capacity, high-performance gas storage systems. By storing biogas when production exceeds demand and utilizing it during peak consumption periods, operators can optimize energy supply and increase the economic efficiency of their plants.

Double membrane gas storages (tank mounted)

At the same time, plant operators are investing in the modernization of existing facilities, creating additional demand for reliable, safe and durable gas storage solutions with long service lives and low maintenance requirements.

What estimations do you have for the second half of 2026?

We expect the second half of 2026 to remain positive, although market conditions will continue to be influenced by geopolitical developments and investment decisions in the energy sector.

Demand for renewable energy infrastructure and biomethane projects is expected to remain strong, supported by political initiatives to improve energy security and reduce carbon emissions.

For AGROTEL, we see continued opportunities for international growth, particularly in markets investing in sustainable energy solutions and modern industrial infrastructure. Our focus will remain on innovation, quality and close cooperation with our customers to deliver reliable and future-oriented solutions.

AGROTEL GMBH

HARTHAM 9

94152 NEUHAUS AM INN

DEUTSCHLAND

+49 (0) 8503 914 99 0

INFO@AGROTEL.EU

www.agrotel.eu/en/biogas