Product Description

The management of off-grid landfills represents a special environmental challenge as landfill technologies such as degassing systems and leachate treatment plants rely on electricity for operation. The operation of such landfills therefore comes with very high risks for explosion, fire, intoxication and groundwater contamination, as well as with increased smell emissions.

Hofstetter is proud to introduce its latest innovation called Auttonomous ™ - the first ever solution that is capable of managing the gas and leachate of off-grid landfills. The fully integrated and containerized Auttonomous ™ unit safely combusts landfill gas in a gas engine which produces electricity and heat that can be utilized on-site. Part of the produced electricity is used to power a compact reverse osmosis unit that turns landfill leachate into fresh water. Last but not least, the proper gas- and leachate management results in significantly decreased smell emissions.

Working principle of a Auttonomous ™ unit

Technical Data

  • Gas flow rate 20 – 500 Nm3/h
  • Efficiency >70% (combined thermal & electric)
  • Methane concentration 35% - 55%
  • Leachate treatment 4'000 - 20'000 liters per day
  • Turn down ratio 1:5 (1:10 optionally available)
  • Noise level


Hofstetter Gastechnik has successfully deployed more than 200 landfill gas management systems around the globe in the last five years, of which many can be visited on demand.

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