Workshop: Small scale biomass co-generation - technology status and market opportunities

7. October 2010
The Danish Society of Engineers (IDA), Kalvebod Brygge 31-33
Copenhagen, DK

The purpose of this workshop is to present recent developments in relatively small scale (up to 10 MWe) co-generation or power plants based on either combustion or gasification.


IDA - The Danish Society of Engineers, Danish Society of Energy (IDA Energi) in co-operation with IEA Bioenergy Task 32 and Task 33.

Content Description

As of yet, power generation from solid biomass is typically based on conventional steam turbine technologies in combination with a combustion system. However, economy of scale for steam turbines typically makes power generation on a scale smaller than a few MW not financially feasible. Recently however, several innovative prime mover technologies based on other technologies have emerged, that could make electricity generation on a smaller scale financially attractive. These technologies are either based on combustion or gasification of solid biomass, and include ORC technology, Stirling engines, gas engines or other concepts for power generation. Some of these technologies are already offered commercially, others are still in the development stage.

The two working groups on combustion and gasification of biomass, Task 32 and Task 33, under IEA Bioenergy have joined forces with IDA Energi to organize this expert workshop. The purpose is to present an update on the recent developments in relatively small scale (up to 10 MWe) co-generation or power plants based on either combustion or gasification of solid biomass fuels.

We focus on commercial or close to commercial technologies and attempt to take an industrial and market approach.

At the end of the day we summarize and compare the information received from the technology presentations, we evaluate the summary data with experience from the follow-up program on small biomass CHP in Denmark, and we ask an expert panel to review what role small scale biomass CHP technologies may take in the future renewable energy market in Europe.

We wrap up the day with a site visit to's wood fired stirling engine demonstration unit in Copenhagen.


  • 09:00 Welcome and introduction
    Why small scale CHP and where is the market?
    Jaap Koppejan, task manager, IEA Bioenergy Task 32, Netherlands
  • 09:05 Next Generation of Pellet Combustion with Thermoelectric Power Generation
    Wilhelm Moser, Bioenergy 2020+, Austria
  • 09:30 Gasfication in stirling engine applications
    Lars Jagd,, Denmark
  • 09:55 Staged gasification with gas engine, the Viking Gasifier
    Morten Grøn, Weiss A/S, Denmark
  • 10:20 Coffee / tea break
  • 10:35 Steam engines
    T. Augustin, Spilling Energie GmbH, Germany
  • 11:00 State-of-the-art of ORC technology for biomass plants
    Roberto Bini, Turboden SRL, Italy
  • 11:25 Downdraft gasification with gas engine
    Herbert Gemperle, Pyroforce, Switzerland
  • 11:50 Lunch
  • 12:50 Updraft gasification with gas engine
    Robert Heeb, Babcock & Wilcox Vølund A/S, Denmark
  • 13:15 Indirect gasifier
    Reinhard Rauch, task member IEA Bioenergy Task 33, Austria
  • 13:40 Upscaling the LTCFB (Low Temperature Circulating Fluid Bed) gasifier
    Anders Boisen, DONG Energy, Denmark
  • 14:05 The Skive plant (BFB gasification): status and perspectives
    Speaker not yet confirmed
  • 14:30 Steam turbines
    What is the lower limit for feasibility, recent developments to reduce costs and increase efficiency in small steam turbine systems
    Reiner Schenk, Siemens Frankenthal, Germany
  • 14:55 Coffee / tea break
  • 15:10 Summary of technology presentations
    An attempt to present a comparable status of performance and economic data, application scale and technology readiness.
    Anders Evald, Force Technology, Denmark
    Perspectives to data collected through the Danish follow-up program for biomass CHP
    Henrik Flyver Christiansen, Danish Energy Agency, Denmark
  • 15:40 Panel discussion with focus on technology perspectives
    Is small really beautiful; how does large scale technologies compare to small scale, where will we see developments in the future (markets and technology), and why?
  • 16:10 Closing and transportation to Stirling.DK
  • 16:30 Visit to
  • 18:15 End of site visit, bus transport back

Target Audience

Researchers, engineers, industry managers, authority representatives and anyone else interested in the commercialization of small scale biomass power technologies are invited to participate.

Participant Information

Time and date

7th October 2010 09:00 to 16:10 followed by transport 16:10 to 16:30 and site visit from 16:30 to 18:15

Site visit's wood chip gasifier and Stirling engine demonstration unit in Northern Copenhagen (app. 10 minutes drive from the Conference Centre). Bus transport is available both ways for those who need.


1300 DKK (Danish kroner). For international participants, this is about 175 EUR or 220 US$.


Registration is made through IDA - The Danish Society of Engineers website. Registrations are taken on a first come first serve basis.

Contact Address

The Danish Society of Engineers (IDA)
Kalvebod Brygge 31-33
1780 Copenhagen V

  • Secretariat: Bente Samsøe
    phone +45 33 18 55 18
  • Organiser: Peter Arendt Jensen
    phone +45 45 25 28 49
  • Task 32: Anders Evald, FORCE Technology
    phone +45 72 15 77 50
  • Task 33: Henrik Flyver Christiansen, Danish Energy Agency
    phone +45 33 92 67 00