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Über uns - Biogastechnik Süd GmbH

In 1999, the two managing directors of Biogastechnik Süd GmbH, Clemens and Gregor Maier, took over their parents' agricultural business Heslerhof in Isny-Sommersbach.A biogas plant was built on the Heslerhof in the same year. The problems at the time with the fast-running agitators when a lot of grass silage was used in the fermenter of the biogas plant inspired the two to build their own slow-running agitator. The paddle agitator Varibull, developed in 2002, has since proven itself thousands of times over and is one of the best-selling agitators of all. The variety of products for biogas plants developed by Biogastechnik Süd GmbH in the years since then therefore has its origins in the daily work of an agricultural business. Our products for biogas plants are made FROM THE PRACTICE, FOR THE PRACTICE.

Biogastechnik Süd GmbH
Biogastechnik Süd GmbH


Our philosophy

It is not easy for agricultural businesses to utilise their renewable raw materials and residual materials, such as liquid and solid manure, with ideal economic conditions. Our aim is to create solutions with our components for biogas plants, which make this possible. By continuously improving our components and developing new technologies, we want to offer our customers the best solution at all times. We are convinced of the benefits and environmental friendliness of our products and thus make an important contribution to the renewable energy system. Because biogas plants are the only producers of renewable energies that are able to generate electricity and heat flexibly and in line with demand.

How we see ourselves:

Our greatest capital is the high motivation and the many years of experience of our employees.

We focus on reliability and quality:

• through high vertical range of manufacture with all stages of production from development to in-house service
• through usage of high-quality and especially durable materials

Our core competence is our ability to develop ever new technologies and solutions from the requirements of daily operations:
From practical experince, to practical experience entwickeln wir ständig neue und genau auf die Wünsche unserer Kunden angepasste Komponenten und Prozesse.
Our core objective is the satisfaction and sustainable success of our customers. Since we ourselves come from an agricultural background, we know what is important.

We set a high value on this from the beginning:

• the durability and robustness of all components
• low maintenance costs and own power consumption during operation
• Comprehensive and competent advice, remote maintenance or on-site support
• Simple, clear handling and operation

The founders

Clemens and Gregor Maier

The brothers Clemens and Gregor not only work as managing directors in their company, but also run an agricultural business with dairy farm, biogas plant and fermentation residue evaporation plant in parallel. Especially when working on the farm at the weekends, new ideas are created which form the basis for the future innovative products of Biogastechnik Süd GmbH. Vague ideas are immediately tried out and developed to series production readiness with the Biogastechnik Süd GmbH team.

As you can see, our motto "From the practice, for the practice" is our programme.


I am a tinkerer through and through. Not only when it comes to developing new products that offer real solutions to farmers' problems. I am also always looking for the right way individually for each farm and each business model. It is important to me that I include the aspect of sustainability and develop new approaches and identify potential for improvement.

I feel particularly comfortable in sales, because here I can communicate all my ideas and the potential that lies behind them. And of course my heart beats for process engineering and development.


I am 120% behind everything we have ever put on the market. Quality and technical progress are our top priority, alongside the customer. Because we operate our own biogas plant and a fermentation residue evaporation plant on the farm, we know in detail how the industry works and what needs to be considered. I always want to share this knowledge with anyone who is interested and sell only the best to our customers.

My hobbyhorse is the best possible implementation of all ideas in order to combine progress and technology perfectly. For this reason, I take great pleasure in managing the design department.

Top service. Great team.
Competent consulting.