Project meeting of STEP at the site of the company ATS - Agro Trading & Solutions in Hardegsen (Photo: DBFZ)

Heat Power Biomass technologies Validation market potential

Project ID 03KB135

VergaOpt - Valorization of low quality wood chip assortments for biomass gasification facilitating the economic operation of existing CHP plants and supporting planned further installations

Biomass CHP plant (Source: Spanner Re² GmbH)


  • 01.09.2017 – 31.07.2020


DBFZ Deutsches Biomasseforschungszentrum gemeinnützige GmbH
Torgauer Straße 116
04347 Leipzig

Dr. Annett Pollex – project leader
Telephone: +49-(0)341 2434-484


03KB135B - Technology and Support Centre (TFZ)
03KB135C - Spanner Re² (Renewable Energy Experts) GmbH

Associated partners

Cooperation partners



Increasing competition and enforced cascading will necessitate the substitution of wood fuels by biomass side products and biogenic residues which, however, are characterized by challenging fuel characteristics and elevated heterogeneity. To sustain profitable operation of small scale combined heat and power plants, such biomass fuels needs proper pre-treatment and fitting on-site quality testing procedures. .


The project aims at the development and testing of flexible, efficient and economic pre-treatment methods accompanied by simple but reliable on-site quality testing procedures. This will sustain the profitable operation of small scale biomass fuelled combined heat and power plants which will play a crucial part in the future energy system marked by a large share of fluctuating energy sources.



The DBFZ will address the following tasks:

  • Definition of the requirements (in particular with respect to elemental composition) of the fuels to ensure failure-free operation of the gasification plant (AP2)
  • Assessment of appropriate methods for on-site quality testing 
  • Analysis of fuel samples concerning chemical composition (AP5)
  • Coordination of the project and knowledge transfer (AP1) as well as evaluation of the results (AP6).

The TFZ is responsible for the acquisition, provisioning and pre-treatment of the fuels as well as the analysis of physical-mechanical and fuel specific parameters.

Spanner RE²
Verification of fuel quality improvements based on the employed methods as well as reduced operational problems will be realized by Spanner using three different gasification plants.



  • Coordination, test setup definition, analysis, evaluation, knowledge transfer


  • Acquisition, provisioning and pre-treatment of the fuels, analysis, knowledge transfer

Spanner RE²

  • Gasification test using real plants


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