Brewing beer independent of natural gas
Many breweries in Germany rely on gas to supply their production processes with heat. While most breweries are currently looking for alternatives and short-term solutions, the Private Weissbierbrauerei Schneider G. Schneider & Sohn GmbH in Munich/Kelheim already took a different path 15 years ago: To ensure a future-proof supply, the beer producer, which is also well-known in Switzerland, afforded itself a new energy center with a biomass heating plant.
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Source: Gammel Engineering GmbH.
Until 2007, the Schneider brewery still obtained the heat it needed from oil - a finite and price-variable resource. To break away from this uncertain supply, the management looked for an alternative. "The simpler and much more convenient method would have been to switch to natural gas, which is technically less complicated," explains master brewer Josef Lechner in reference to the search for a new energy supply. "But even that would have made us more dependent again." By switching to a sustainable resource, such as wood chips, Schneider Weisse was the pioneer in the industry. A comparable approach had not been common there before.
Although the price of gas was very low at the time, which would have led to a quick, inexpensive standard solution, for Georg Schneider and his team the focus was not only on the price of energy: "We made a conscious decision in favor of sustainability and the long-term benefits it brings - and are convinced by the philosophy," says the brewery boss today. In the long term, the move should put the brewery on a carbon-neutral path. In contrast to gas, oil and coal, which in addition to their poor carbon footprint have to be transported to their destination at great expense, the renewable energy source now used by the brewery comes from the immediate neighborhood: the wood chips are produced by forest farmers near Kelheim. "So we leave the added value in the region. The social aspect is very important to us," emphasizes Lechner.

Source: Gammel Engineering GmbH
New energy center and biomass cogeneration plant
Throughout the planning and implementation phase, the brewery sought advice from engineers with extensive expertise in sustainable energy concepts. At the heart of the new concept is a modern energy center and a biomass heating plant for processing the wood chips. Controlled combustion generates process heat in the form of hot water at 160°C, which is fed to the various process stations on the brewery site via a special piping system. "Our wood heating system has enabled us to replace around 720,000 l of heating oil per year, which equates to a saving of 2,000 t of CO2 per year. Instead, about 2,600 t of wood chips from the region are utilized during the same period," says Dieter Lichtenberger, authorized signatory at Gammel Engineering, which was involved in the energy technology consulting.
Gammel Engineering is very familiar with the supervision and implementation of projects of this magnitude. Thus, in addition to the design and installation of the power plant, the engineers' tasks also included the connection of the refrigeration and CIP systems to the energy center. In doing so, the team attached great importance to the use of state-of-the-art materials and technology as well as to a maintenance-friendly implementation. Since then, the brewery has been able to supply almost 95% of its entire operating processes - including bottling, brewhouse, and building and restaurant heating - with heat from the renewable raw material forest wood.

Source: ©Sebastian Riepp
Kelheim energy concept as a template for other beverage producers
The implementation of the project, which involved a technical investment volume of around 1.3 million euros, lasted from May 2007 to March 2008. In the process, the plant was able to pay for itself quickly thanks to the subsequent energy-efficient supply and savings in price-unstable resources. In addition, the strategic decision made 15 years ago has enabled Schneider Brewery to gain a number of advantages today: "We are virtually no longer subject to the global energy market. And not only when you think of the current gas and oil prices. But above all because we are not dependent on gas supplies," argues brewery boss Georg IV Schneider. The managing director is also thinking quite specifically about a possible gas bottleneck. Many of his competitors, most of whom are medium-sized companies, are threatened with loss of production without gas. An energy concept like the one implemented by Gammel Engineering in Kelheim could therefore serve as a model for other breweries and beverage producers. After all, an independent energy supply based on renewable energies ensures that value creation remains in the region.
We would make this switch to woodchip heating again today. Now it shows that the decision was right," says Schneider. Therefore, Michael Gammel, managing director of the energy engineering company of the same name, also recommends to other breweries that still burn natural gas: "Don't wait any longer, but follow your brewer president on the path to sustainable beer production to become independent of global energy price spirals." So in 2022, Schneider Brewery will have two reasons to celebrate: 150 years of brewing tradition and a successful and sustainable energy supply.
Sources and further information: www.gammel.de / Schneider Weisse
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