MT-Energie
MT-Energie is a German biogas technology company that develops turnkey plants, gas-processing systems, components, and operational services for renewable-energy projects.
Last updated August 24, 2026
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History
MT-Energie originated in Rockstedt, Lower Saxony, where Christoph Martens founded the business in 1995 as an engineering consultancy. Its initial activities centered on specialized equipment and components for biogas facilities. In 1997, Martens developed an air-supported membrane cover for biogas plants, a technology that later became associated with the company’s component portfolio and was adopted by other manufacturers. The business moved toward complete plant construction after MT-Energie GmbH & Co. KG was established in 2001. Rather than limiting itself to consulting or individual equipment, MT-Energie increasingly delivered turnkey biogas plants and related infrastructure. Its scope included plant engineering, construction, specialist components, and technical and biological services for plant operators. By the end of 2013, the company stated that it had completed approximately 600 biogas projects with a combined installed capacity of about 350 MW. International development became a significant part of the company’s strategy. MT-Energie opened its first foreign site in Italy in 2007 and moved its German premises from Rockstedt to Zeven in November 2008. The Zeven location included offices, logistics space, and manufacturing buildings for gas-processing plants on a site of approximately 62,300 square metres. Within the MT Group, MT-Biomethan GmbH was founded in 2008 to provide biogas-upgrading technologies. Its stated methods included pressureless amine scrubbing and membrane-based gas permeation, both aimed at producing upgraded biomethane. The company subsequently operated across Europe and marketed its systems in other international markets. It maintained a United Kingdom branch in Bridgnorth, Shropshire, and pursued business in the United States, Canada, and Australia. However, international expansion coincided with weakening German demand and rising costs. In 2013, MT-Energie reported that the German market had experienced a collapse in demand and that international operations, particularly in Italy and the United States, had placed additional pressure on the business. It reduced its Italian workforce from 40 employees to 15 and withdrew from the US market. The retrenchment continued with the closure of Australian, Canadian, and US offices and a broader exit from the North American and Australian markets. The company intended to finish projects already under construction in the United States but did not plan to maintain a wider presence there. The reference material also reports departures or dismissals among experienced country sales and project-management directors during this period, leaving some international sales functions under less experienced management. Financial results reflected the difficulties. Preliminary figures released in June 2014 indicated an expected loss of approximately €23.3 million against projected turnover of around €87.7 million. The company also breached a covenant connected with its 2012 corporate bond after owners’ equity fell to approximately 4.1 percent. MT-Energie negotiated with bondholders to avoid default, while banks and the company discussed the implications for credit agreements. The available material does not provide a definitive account of the company’s subsequent restructuring, ownership, legal status, or current operations. MT-Energie also participated in a community and sporting initiative. During the winter of 2010–11, it made its Zeven storage and logistics center available to Germany’s national archery team within the German Disabled Sports Association for training preparation. The team included Paralympic medalist Mario Oehme and compound-team archers Michael Arenz and Michael Müller.
- 2014
International retrenchment and reported loss
[1]The company closed several overseas offices, withdrew from North American and Australian markets, and reported preliminary expectations of a substantial loss.
- 2013
Reported approximately 600 completed projects
[1]By the end of 2013, MT-Energie reported roughly 600 completed biogas projects totaling approximately 350 MW of installed power.
- 2010
Corporate bond issued
[1]The company issued a corporate bond, later becoming subject to covenant concerns during its financial difficulties.
- 2008
MT-Biomethan founded
[1]MT-Biomethan GmbH was established within the MT Group to develop and offer biogas-upgrading systems.
- 2008
Headquarters moved to Zeven
[1]MT-Energie relocated from Rockstedt to a large Zeven site containing offices, logistics facilities, and manufacturing buildings.
- 2007
First foreign site opened in Italy
[1]MT-Energie began its formal overseas site network with an Italian location.
- 2001
Expansion into turnkey plant construction
[1]The establishment of MT-Energie GmbH & Co. KG marked a stronger focus on designing and building complete biogas plants.
- 1997
Air-supported membrane cover developed
[1]Christoph Martens developed an air-supported membrane cover for biogas plants, later used by multiple plant manufacturers.
- 1995
Company founded in Rockstedt
[1]Christoph Martens founded MT-Energie as an engineering consultancy focused on the emerging biogas sector.
Products and positioning
An integrated biogas engineering and services provider combining plant construction, specialist components, gas upgrading, and ongoing technical and biological support.
Biogas infrastructure · 2001
Turnkey biogas plants
MT-Energie’s principal business was the design and construction of complete biogas power plants. These projects brought together plant engineering, specialist components, digestion-related systems, gas handling, and power-generation infrastructure. The turnkey model positioned the company as a project integrator rather than solely as an equipment vendor. By the end of 2013, the company reported approximately 600 completed projects with total installed power of about 350 MW.
Biogas plant components · 1997
Air-supported membrane covers
The air-supported membrane cover was developed by Christoph Martens in 1997 for use on biogas plants. The design formed part of MT-Energie’s early specialization in biogas components and was subsequently used by various manufacturers. It served as a cover and gas-storage element within anaerobic-digestion infrastructure, although the available material does not specify a single proprietary commercial product name.
Gas processing · 2008
Biogas upgrading systems
Through its subsidiary MT-Biomethan GmbH, the MT Group offered systems for upgrading raw biogas into higher-methane biomethane. The referenced technologies included pressureless amine scrubbing and membrane-based gas permeation. These systems addressed gas purification and methane enrichment for downstream uses requiring upgraded gas, though the available source does not provide detailed specifications, capacities, or product model names.
Biogas operations services
Technical and biological plant services
In addition to engineering and construction, MT-Energie offered technical and biological services for biogas plants. The service scope supported plant operation and performance through engineering assistance and biological expertise. Specific service packages, contract terms, and geographic availability are not identified in the supplied reference material.
Marketing campaigns
- 2010Zeven training support for German disabled archery
Germany
During the winter of 2010–11, MT-Energie made its Zeven storage and logistics center available to Germany’s national archery team affiliated with the German Disabled Sports Association for preparation and training.
Outcome. The facility provided a training and preparation location for the team; no commercial campaign metrics are reported.
Brand decisions
2014
Further international retrenchmentStrategyBackground
Financial pressure and expected losses made the company’s overseas network difficult to sustain.
Action taken
MT-Energie closed its Australian, Canadian, and US offices and ended broader involvement in those markets.
Aftermath
Only completion of already begun US projects was expected to continue in North America. The source also reports turnover among experienced international sales and project-management leaders.
Expected loss and turnover. Expected loss of €23.3 million on projected turnover of €87.7 million (2013 preliminary results released 30 June 2014)
2014
Negotiate with bondholders after covenant breachOtherBackground
Owners’ equity reportedly fell to approximately 4.1 percent, triggering a covenant breach under the company’s 2012-issued corporate bond.
Action taken
MT-Energie reached an arrangement with bondholders intended to avoid default and separately discussed credit arrangements with its banks.
Aftermath
The available reference does not establish the eventual resolution of the bond or banking negotiations.
Owners’ equity. 4.1% (Reported during the company’s 2013–2014 financial difficulties)
2013
Withdraw from the US market and reduce Italian operationsStrategyBackground
MT-Energie cited falling German demand and the high cost of internationalization, particularly in Italy and the United States.
Action taken
The company reduced its Italian workforce from 40 to 15 employees and withdrew from the US market.
Aftermath
The company later closed offices in Australia, Canada, and the United States and exited North American and Australian markets except for completing previously started US projects.
Sources1 sources
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