We know exactly what matters in practice as owners and operators of our own biogas plants and with over 35 years of experience. We live our motto: “From farmer – to farmers”.

Plant planning

Essential for a successful implementation of a project is the planning

During the construction phase, starting with the consultation and the first sketch, up to the finished work planning: Our team is always at your side and supports you up to the approval. The design of the planning should be as uncomplicated and cost-effective as possible for you. Therefore, all steps up to the signature/verification of the person authorized to submit building documents and the completion of the building files for all offices are carried out in our company.


Wast has a perfect command of our system through numerous visits to various biogas plants (NaWaRo, liquid manure, waste, etc.) at home and abroad and, thanks to his many years of experience, can put your ideas in the best possible way.


Christina supports our planning especially in the German area.
She will guide you from the initial idea to the final permit and help you reconcile workable construction with applicable requirements and funding.


Tom makes the technical drawings of our components and works continuously on further developments and improvements. He is also responsible for the development & drawings of the SCR catalyst.

Hochreiter’s – farm biogas plant from 50kW – 150kW

We plan the biogas plant that suits your business and calculate honestly how much money is in your slurry, together with you!


  • Covering the own electricity demand for farm and biogas plants
  • a high manure content even above 80% is no problem, due to our robust technology
  • Little additional workload in the day-to-day operation of the company
  • produce your own heat and earn additional profit by selling the surplus heat
  • independent & sustainable energy production from own manure and dung
  • Slurry refinement

Build a second source of business to stand on with your own farm biogas plant.

Information on the individual components of a Hochreiter – Farm Biogas Plant can be found in the graphic below.

Hochreiter’s – single tank plant

  • Cost-effective variant for pure slurry/manure plants

  • Expandable at any time

  • lowerable filling level

  • Compact design

  • robust single-screw feeding “Fuada Sepp” for manure entry

Hochreiter’s – PLANT SYSTEMS from 150kW

As a pioneer in the industry, operator and owner of our own biogas plants, we have a lot of experience in the sector. This experience benefits customers in design and construction, and in achieving the highest level of cost-effectiveness.

We adapt your future plant to your local conditions and wishes,
so that the plant runs uncomplicatedly, smoothly and, of course, economically.
That is why we have developed various concepts.


  • More than 35 years of experience in construction, projecting and manufacturing of biogas plants and their components

  • Self-operator of two own biogas plants with 1.837kW and 1.972kW installed capacity

  • Over 2,000 plants built

  • Own production and manufacturing in Schnaitsee -> Made in Germany

  • Large containers with a long residence time, resulting in the best gas yields in quantity and quality

  • Overflow between the tanks, material runs by itself through a riser pipe from the digester into the secondary digester, no power consuming pumps necessary, no technical failures

  • Direct feeding of feedstocks into the digester, without complex & cost-intensive reduction technology.


The ring-in-ring system developed by Hochreiter over 15 years ago
offers the customer several extensive options.

Questions & Answers

One large vessel combining digester & post-digester
(Outer ring = digester, inner ring = post-digester)

  • Very space saving & compact
  • Lower heat demand due to insulated concrete ceiling
  • Fluidic optimized
  • short distances between pipes (overflow, digester/post-digester)
  • Maintenance-friendly due to large inspection openings in the ceiling
  • Low heat loss in the post-digester, as this is located in the inner ring
  • Very good control through sighting devices in the ceiling

Hochreiter CHP’s

MotorCubic capacityMax. electr. PowerTherm. Power
HOMWM R66.24 liters75kW96kW
HOMAN TE344.58 liters85kW101kW
HOMAN TE366.87 liters110kW126kW
HOMAN LE366.87 liters100kW124kW
HOMAN TE7612.82 liters150kW178kW
HOMAN LE7612.82 liters200kW224kW
HODEUTZ V611.9 liters220kW273kW
HODEUTZ V815.9 liters310kW410kW
HOTEDOM11,95 liters210kW235kW
HOMAN H307612.3 liters190kW220kW
HOMAN H13022.56 liters420kW484kW
HOMAN LE6225.8 liters530kW588kW

Biogas plants for special requirements and waste recycling:

  • Robust and simple stirring technology (BAFA)

  • Energy-saving solid entry (BAFA)

  • Sand rake system, which is used to discharge settling materials, such as sand from laying hen manure, during operation

  • suitable for all waste such as organic waste, bio waste, slaughterhouse waste, etc.

  • Solutions for floating layers of e.g. light plastic, packaging material, etc.


Biogas Flexibilization, more revenue, little effort in everyday life

A lot of new specifications and requirements have to be taken into account, in order to achieve more revenue for less effort on a day-to-day basis. Numerous questions arise for the plant operator.

Questions & Answers

“Flex operation” means shutting down at peak power prices and shutting down at low prices to store valuable biogas. The operator therefore benefits from the increased remuneration during peak electricity periods.

The direct marketer creates a sample schedule that is controlled by the flexible CHP unit according to the electricity price.

Your existing plant must be adapted to the requirement for flexible operation. Typically, this means overbuilding the electrical capacity and increasing the gas storage.

We carry out a free system check and work out your individual, flexible system concept, together with you.

Plant certificate, requirements for approval, acceptance according to §29a BimSchG, statutory order on hazardous incidents

We advise you in detail on questions concerning direct marketing, grid compatibility assessment and grid connection extension, transformer stations, environmental assessment for flexible operation, plant certificate, noise assessment, water law, acceptance in accordance with §29a BimSchG.


Available quickly and at any time, versatile in use, resource-saving in production


  • Biomethane is climate and environmentally friendly

  • has a better CO2 balance than fossil fuels

  • advanced fuel that is RED II compliant

  • Can be used as gaseous Bio-CNG or liquid Bio-LNG

Biogas consists mainly of 50-60% methane, the remaining components are CO2 and a small amount of trace gases. The latter are considered impurities and must be separated from the other components before being fed into the natural gas network.

The separation of biogas to high quality biomethane can be done with different methods.

The most common methods are membrane technology or PSA (pressure swing adsorption).

Membrane technology is used to compress the biogas and then filter the methane using modern separation modules. Here, several membrane pipes are usually used at the same time. This process is relatively simple and now technically very well developed, which ensures reliable operation.

In pressure swing adsorption, the biogas undergoes a pressure increase as the first step. Subsequently, the carbon dioxide molecules are adsorbed in special columns by strong and rapid pressure changes. This process is run a few times in several columns, and in the process the biomethane is extracted from the raw biogas.

CO2 is also produced during the production of biomethane. This can be used in greenhouses, chemical plants and for beverage and food production.