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…

We are pleased to welcome Leonie as a new engineer at Krieg & Fischer Ingenieure GmbH! Leonie has completed her Master in M.Eng. Renewable Resources and Regenerative Energies at the HAWK Göttingen. She started her studies out of a personal interest in the holistic view of renewable energies. In the lectures given by Andreas Krieg, co-founder of…

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…

The LÖNNE biogas plant is located in North Rhine-Westphalia and was neither planned nor built by us. After the bankruptcy of the manufacturing company, which had already carried out this work until 2021, we were commissioned with the completion and commissioning.

The aim of this plant is the mono-fermentation of fats and oils (fat separator…

As IFAT 2024 draws to a close, we can look back on an extremely successful week filled with inspiring encounters, productive discussions and renewed partnerships.

During the five days of the trade fair, we had the pleasure of welcoming a large number of guests to our booth. The personal exchanges with customers, long-standing business partners…

In 2024, our team of experts will once again welcome you to our booth A4 508 at IFAT 2024, the world's leading trade fair for environmental technologies. Until May 17, you will have the opportunity to discuss, establish new business relationships or visit old friends. For 25 years, our solutions and innovations have stood for global projects in the…

IFAT Munich - the leading trade fair for environmental technologies - will once again offer a platform for personal dialogue with suppliers from the various environmental sectors and from all over the world. (13 - 17 May 2024)

Krieg & Fischer Ingenieure GmbH will once again take the time to talk to you about the planning and construction of biogas…

Last year, Krieg & Fischer Ingenieure received orders for the construction of industrial biomethan plants with a total capacity of 120 MW. The orders include the design, construction management and commissioning of the biomethane plants. For K&F team, it is the largest increase in orders since our foundation almost three decades ago.

The…

We are delighted to welcome Theo Bijman to our team. Theo brings with him an impressive career and a wealth of experience in the fields of agricultural engineering and biogas.

After studying agricultural engineering at the prestigious Wageningen University in Holland, Theo deepened his expertise first in Africa and later as a lecturer at an…

We are thrilled to announce our new partnership as a base partner of the BG Göttingen basketball team! The motto 'We are Göttingen' is more relevant than ever in the current season, with a focus on solidarity and cohesion. Through this exciting partnership, we will be able to support local sports, increase our public presence, and expand our reach.

At the invitation of Biogas Service Tarmstedt GmbH, our Managing Director Raphael Thies was able to exchange views with numerous guests from politics and the biogas industry on key issues relating to the biogas industry and regulation/support at the first internal Lower Saxony Economic Summit on Monday. Stefan Heins and Oliver Barde, Managing…

Krieg und Fischer Ingenieure is pleased to welcome Florian Fritsch to the team. Florian brings with him impressive expertise gained through his research in fluid mechanics at the Okinawa Institute of Science and Technology and his bachelor's and master's degrees in process engineering at the Vienna University of Technology.

His enthusiasm for…

We are delighted to welcome Dimitrios Michalakis as a new member of our team! With an impressive career as a refinery engineer and subsequent work in plant and mechanical engineering, Dimitrios brings a wealth of experience and knowledge to our company.

After seven years in renowned companies in Greece, where he acquired extensive knowledge in…

We are delighted to welcome Paul Ringel as a new member. Paul has an impressive academic background with a Bachelor in Natural Product and Process Engineering from the Dresden University of Applied Sciences and a Master in Industrial Biotechnology from the Technical University of Munich. During his studies, he gained practical experience, including…

We are delighted to welcome Christian Brückner to our team! With his impressive experience at the German Aerospace Centre and his background as a graduate engineer in chemical engineering, Christian brings valuable expertise to our company.

Christian has previously specialised in the air conditioning of aircraft and vehicles and has in-depth…