An exciting and busy week at the Krieg & Fischer Ingenieure GmbH booth during IFAT 2026.

We were glad to reconnect with long-standing clients and partners from Germany, Japan, Canada, and many other countries, while also meeting new contacts from around the world.

Numerous insightful discussions with clients, suppliers, and industry partners…

Krieg & Fischer Ingenieure GmbH team at IFAT is pleased to reconnect with our long-standing partners and to establish new contacts. Once again, our booth is a place to exchange experiences, discuss new developments, and explore new projects together.

We look forward to continuing these exchanges over the coming days of the trade fair.

Feel free…

Hall A4, Booth 203

Visit our booth. Get to know us. Discuss with our experts and get information about planning, construction, operation and improvement of biogas and biomethane plants. 

We look forward to exciting encounters and a successful IFAT 2026.

A look at real-world applications shows that biogas and biomethane are central to the energy transition in the sugar industry.

The current issue of the renowned trade journal Sugar Industry (Volume 151, Issue 2/2026) features the article

Edina Ringleben-Fricke has been awarded the Germany Scholarship for the current funding year.

Congratulations! Here at Krieg & Fischer Ingenieure GmbH, we are delighted to have the opportunity to support her. Once again this year, our company is helping to strengthen the Göttingen region by supporting the Germany Scholarship at HAWK Göttingen.

Ed…

At the specialist seminar of the Quality Association for Fermentation Products (GGG) and “Waste Fermentation Day” 2026, we presented one of the most exciting bioenergy projects in Europe at present: Poland's first biomethane plant with direct grid feed-in in Strzelin. The plant, designed by Krieg & Fischer Ingenieure GmbH, will enable the Strzelin…

In 2026, our team of experts will once again welcome you to IFAT, the world's leading trade fair for environmental technologies, at booth A4 203.

For more than 25 years, we have been developing innovative solutions for biogas, biomethane, and green hydrogen. With our expertise, we support projects worldwide that promote a sustainable and…

An intensive and successful year 2025 lies behind us – marked by exciting projects, new collaborations, technical milestones and valuable developments within our team. We would like to take a look at the most important events that have defined our year.

Successful start-ups worldwide

Milestone for Poland: First biomethane plant connected to the…

Dear customers, business partners and friends,

As another eventful year comes to a close, we want to thank you for your trust and support. The Christmas season offers an opportunity to pause and appreciate the past - as well as the cooperation with you.

We wish you and your families a peaceful holiday season, happy times and a successful start to…

Krieg & Fischer is pleased to announce its participation in the innovative “HyTechHafen Rostock” project – a pioneering initiative for the climate-neutral production of green hydrogen in the port of Rostock. The project is being funded as an IPCEI (Important Projects of Common European Interest) project. Developer and operator is rostock EnergyPort…

On October 27, 2025, the symbolic groundbreaking ceremony for the construction of the BioEnergyHub took place at the Zeitz Chemical and Industrial Park in Tröglitz.

The BioEnergyHub will produce climate-neutral biomethane from sugar beet processing residues. Südzucker is thus driving forward the energy transition in Germany and making the Zeitz…

Construction of a biomethane plant began in the Zeitz Chemical and Industrial Park in spring 2025. Krieg & Fischer Ingenieure GmbH is responsible for planning and implementation, and is once again demonstrating its expertise in complex, large-scale biogas projects.

The project's core involves fermenting sugar beet pulp, a by-product of sugar…

On September 9, 2025, the first biomethane plant in Poland was officially connected to the Polska Spółka Gazownictwa gas grid in Strzelin.

At Krieg & Fischer Ingenieure GmbH, we are proud to have delivered the complete engineering of the anaerobic digestion plant and digestate treatment for this lighthouse project.

This large-scale biogas…

Krieg & Fischer Ingenieure GmbH was awarded a new contract for the detailed planning of a biomethane plant in Spain at the end of February. The planned plant will be built in the immediate vicinity of an olive oil mill and will convert olive pomace (Alperujo) - a residual material from olive oil production - into valuable biomethane. The approval…

Krieg & Fischer Ingenieure GmbH is pleased to participate in the 41st International Fuel Ethanol Workshop & Expo (FEW), taking place June 9–11, 2025, in Omaha, Nebraska, in collaboration with our U.S. partners LYS Enterprises and Equinox.
As the world’s longest-running ethanol conference, FEW provides valuable insights, technical content, and…

Bioenergie Velen GmbH's new biomethane plant was officially commissioned in May 2025. The plant sends a clear signal for a future-proof, sustainable energy supply.

At the heart of the plant is a newly designed fermentation line from K&F. Among other things, it comprises two modern fermenters with a net volume of 9,550 m³ each. The biogas produced…

Our team continues to grow! We are pleased to welcome Dennis Bollin as a new expert in planning and optimization of biogas plants. With his extensive experience in project planning, plant operation repowering, and commissioning, he brings valuable expertise to our planning processes.

Dennis Bollin is a mechanical engineering technician and an…

The commissioning of seven biomethane plants in the USA marks an important milestone in the use of sustainable energy. The process began at the end of 2024 with a smaller plant, “New York State 2”, which has a biogas upgrading capacity of 600 Nm³/h. In total, the plants are expected to achieve a raw gas output of more than 5000 Nm³/h, which…

The Krieg & Fischer team has completed another successful project—the conversion of the Heiligengrabe biogas plant from power generation to biomethane production. The plant is now in its commissioning phase.

Originally built in the year 2009, the facility was designed to produce biogas primarily from energy crops. Owned and operated by Loick…

Since its foundation 25 years ago, our engineering office has made a proud contribution to the energy transition with over 165 biogas plants planned and built. This success is the result of many years of experience, a hands-on approach, cooperation and team spirit and a clear vision for the future.

As we remain committed to developing sustainable…

We have been involved in the Deutschlandstipendium scholarship for several years to support talented and committed students - including in the 2024/25 funding year.

This year's scholarship holder, Maha Chouket, is studying for a Master's degree in Renewable Resources and Renewable Energies at HAWK. Her enthusiasm for energy and nature as well as…

Dear customers, business partners and friends,

As an eventful year draws to a close, we would like to thank you for your trust and support. The Christmas season offers an opportunity to pause and appreciate the past - as well as the cooperation with you.

We wish you and your families a peaceful holiday season, happy times and a successful start…

EuroTier opened its doors in Hanover from 12 to 15 November 2024, and this year our engineering office was once again on site with a dedicated team. The exhibition is a valuable platform for us: With over 2000 exhibitors, it provides fresh impetus and the latest technological developments for future projects. It is also a central meeting point for…

On July 15th, the first cubic meters of biomethane were injected into the Essen Kettwig natural gas network from the Im Brahm biogas plant. The conversion of this plant from electricity to biomethane production is our latest project with BioEnergie Ruhrtal, a collaboration that began 20 years ago. We congratulate the Im Brahm family on this…

We are pleased to welcome Moataz Alhayek as a new member of our team at Krieg & Fischer Ingenieure. Moataz graduated from the Islamic University of Gaza with a Bachelor's degree in Mechanical Engineering in 2020. In recent years, he gained valuable experience in various organizations in Gaza, especially in power plants and seawater desalination…

We at Krieg & Fischer Ingenieure GmbH are delighted about the latest developments regarding the German Scholarship at the HAWK.

We were delighted to learn that the HAWK has been working intensively on awarding scholarships in recent months. Over 507 applications have been reviewed and the awarding of the scholarships is drawing ever closer. We are…

We are pleased to announce that Krieg & Fischer Ingenieure GmbH is a sponsor of the first international stand-up paddle crossing and race "DaSkadar", which took place on the beautiful Lake Skadar in Montenegro on June 28th and 29th. The "DaSkadar" was organized by the Just Add Water Paddle Association.

The occasion, which celebrated the beauty of…

Bioenergie Velen GmbH is investing in a state-of-the-art biogas and RNG plant after taking over the former nutrient processing plant with a biogas section. The Krieg & Fischer engineering team was commissioned to integrate the existing plant components into the newly designed system, based on the customer's preliminary planning. The Velen plant…

In an interview with Raphael Thies, Managing Director of Krieg & Fischer Ingenieure GmbH, Biogas Journal spotlights the growing demand for biomethane plants in issue 3_2024. Raphael Thies, an expert in the field of biogas technology, shares his insights into current developments and challenges in the industry.

International demand and technical…