Innovative, effective and sustainable technology and logistics for forest residual biomass -  Summary of the INFRES project results



INFRES Newsletter 1: Customers and markets of forest biomass

INFRES Newsletter 2: Forest Biomass recovery and improvements

INFRES Newsletter 3: Four succesfull international supply chain demonstrations

INFRES Newsletter 4:  Assessing bioenergy and its EU-wide impacts

INFRES Newsletter 5: Fuel wood quality optimization through drying models and sorting tools

INFRES Newsletter 6: Specification of wood chips and hog fuel by EN ISO 17225 standards

INFRES Newsletter 7:More demonstrations in 2013-2014:stumps and small trees

INFRES Newsletter 8: Supply chain performance and re-engineering

INFRES Newsletter 9: Demonstartion Galore

INFRES Newsletter 10:Technological and economic barriers in innovation

INFRES Newsletter 11:Potential of innovation and inventions

INFRES Newsletter 12:Risk assessment and measures to overcome barriers to the commercialization of inventions




Development of technology and quality improvement

Report Technology push – technologies for the  residual biomass harvest for the future

Report A prediction model prototype for estimating optimal storage duration and sorting 

Report Full supply chain performance and re-engineering report

Report An operator tutoring system for optimal blade maintenance


Adapting existing forestry practices for improved biomass production

Report Customers and markets of forest biomass of the future

Report Adapted forestry practices for improved biomass recovery

Report Coupled vs. De-coupled Logistics for Wood Chip Production

Report Test bench model for logistical business analysis

Report Novel business and service models of the forest biomass supply

Report Analyses of forest management systems for increased harvest of small trees for energy purposes in Sweden


From demonstrations to practice

Demo reports 1-3

  • Two stage  grinding of woody biomass
  • Smart chipper demo in Germany
  • Pezzolato chipper truck demo in Sweden

Demo reports 4-7

  • Efficiency of integrated grinding and screening of stump wood for fuel at roadside landing with a Crambo 6000 grinder equipped with a star screen
  • Harwarders for thinning hardwood  plantations in Italy
  • Multi‐tree harvesting head in Catalonia
  • Studies and demonstration on the use of a novel prototype harvester head in early fuel wood thinnings


Demo reports 8-23

    • Stump drilling demo in Finland
    • Forest biomass recovery in Alpine forests
    • Success factors for forest fuel terminals
    • Demonstration of a High Capacity Vehicle for chips transport at Political week in Almedalen
    • Drying of wood chips in a warm air dryer
    • Lipe Multipurpose Chip Truck and Semi‐trailer Equipped with Electronic Trailer Steering System
    • Harvesting operations in hard wood  dominated stands using the energy wood felling head Naarva EF28
    • Studies and demonstartion on the use of a bundle-harvested system in early fuel wood thinnings
    • Semi-automated process analysis of wood chip supply using a fleet management system
    • Joint demonstration of the large nine axle chip truck-trailer unit and the fhybrid chipper
    • Un-motorized full suspension carriage for increasing cable yarding efficiency
    • Trasport logistics software for wood chip firms
    • Wood chip drying using biogas heat in Germany
    • Using synthetic cable for wood and biomass extraction in Catalonia
    • Comparative study of a loading unit compression and a conventional forwarder at transportation of bulky woody biomass
    • Demonstration of good terminal logistics and high capacity transports



Prototype of  hybrid technology chipper


Report Location barter may reduce forest fuel transportation cost

Report Destinering och lägesbyten för att effektivisera transporterna av skogsflis

List of all main fairs and demos in the participating countries



Sustainability of forest biomass feedstocks

Report Description of the assessment framework with indicator and scenario specification

Report  Impact Assessment on Carbon dynamics, forest growth and

productivity, water quality, and biodiversity

Report Documenting sustainability impacts of scenarios for different fuel sources and procurement technologies

Report Biomass from forests – cost estimation of complete supply chains 



Technology foresight and barriers of innovation

Report Technological and economic barriers to introduce and apply

innovations in forest energy sector

Report Development potential of inventions in forest biomass harvesting

Report Plan for promoting the demonstrated systems and technologies for further development 




Project brochure in Swedish

Project brochure in Catalan

Project brochure in Czech

Project brochure in English

Project brochure in Finnish

Project brochure in German

Project brochure Italian


Dissemination Documents:

Available information to public at project webpage

Projct promotional material and templates

Plan for use and dissemination of foreground

Procedings of workshops

Report on innovative, effective and sustainable technology and logistict for forest residual biomass

Managemet of The Project:

Project management tools

Minutes of General Assembly 1

Minutes of General Assembly 2

Minutes of General Assembly 3

Ethical approval by the legal local Ethics Board


Demo-movie of the full suspension carriage:

Testing the NAARVA EF28 in Austria:

German version:

English version:

Demo of the prototype MAMA-head

Demo of the multipurpose wood chip semi-trailer

Demo: Innovative Container Wood Chip Drying Using Biogas Heat



Peer-reviewed articles:

Berg, S. 2014. Technology and systems for stump harvesting with low ground disturbance. Acta Universitatis Agriculturae Sueciae. Doctoral thesis No. 2014:95. Faculty of Forest Sciences.

Bergström, D. & Di Fulvio, F. 2014. Studies on the use of a novel prototype harvester head in early fuel wood thinnings. International Journal of Forest Engineering, 25(2): 156-170.

Bergström, D., Di Fulvio, F. & Nuutinen, Y. Effects of harvested tree size and density of undergrowth on the operational efficiency of a bundle-harvester system in early fuel wood thinnings. Submitted to CroJFE.

Eliasson, L., Hofsten, H., Johannesson, T., Spinelli, R. &Thierfelder, T. 2015. Effects of Sieve Size on Chipper Productivity, Fuel Consumption and Chip Size Distribution for Open Drum Chippers. Croatian Journal of Forest Engineering 36: 11-17.

Erber, G. 2015. Increasing energy efficiency in fuel wood utilization through meteorological data based drying models. Ph.D thesis. University of NaturaEl Resources and Life Sciences Vienna. 

Erber, G., Kanzian, C. & Stampfer, K. 2015. Modelling Natural Drying of European Beech (Fagus sylvatica L.) Stems for Energy based on Meteorological Data. Scandinavian Journal of Forest engineering, in print.

Erber, G., Routa, J. Kolström, M., Kanzian, C., Sikanen, L. & Stampfer, K. 2014. Comparing two different approaches in modelling small diameter energy wood drying in logwood piles. Croatian Journal of Forest Engineering 35:15-22.

Erber, G., Holzleitner, F., Kastner, M. & Stampfer, K. 2015. Impact of a multiple tree handling capability on the performance of an energy wood head harvesting small diameter hard wood. Submitted to Silva Fennica.

Facello A., Cavallo E., Magagnotti N., Paletto G. & Spinelli R. 2013. The effect of knife wear on chip quality and processing cost of chestnut and locust fuel wood. Biomass and Bioenergy 59: 468-476. 

Facello A., Cavallo E., Magagnotti N., Paletto G. & Spinelli R. 2013. The effect of chipper cut length on wood fuel processing performance. Fuel Processing Technology 116: 228-233.

Kanzian, C., Erber, G. & Stampfer, K. 2015. Effects of Moisture Content on Supply Costs and CO2 Emissions for an Optimized Energy Wood Supply Network. Submitted to Croatian Journal of Forest Engineering.

Laitila. J. & Nuutinen, Y. 2015.Efficiency of integrated grinding and screening of stump wood for fuel at roadside landing with a low- speed double-shaft grinder and a star screen. Croatian Journal of Forest Engineering 36:19-32.

Laitila J., Ranta T., Asikainen A., Jäppinen E. & Korpinen O.-J. 2015. The cost competitiveness of conifer stumps in the procurement of forest chips for fuel in Southern and Northern Finland. Silva Fennica vol. 49 no. 2 article id 1280. 23 p

Laitila, J & Routa, J. 2015.Performance of a small and medium sized professional chippers and the impact of storage time on Scots pine (Pinus sylvestris) stem wood chips characteristics. Submitted to Silva Fennica.

Laitila, J. & Väätäinen, K. 2013. The Cutting Productivity of the Excavator-based Harvester in Integrated Harvesting of Pulpwood and Energy Wood. Baltic Forestry 19(2): 289-300.

Mihelic M., Spinelli R., Magagnotti N. & Poje A. 2015. Performance of a new industrial chipper for rural contractors. Manuscript submitted to Biomass and Bioenergy.

Nati, C., Magagnotti N. & Spinelli R. 2015. The improvement of hog fuel by removing fines, using a trommel screen. Biomass and Bioenergy 75: 155-160

Raitila, J. & Heiskanen, V-P. 2014. Profitability of supplying wood chips dried at small or medium scale heating plants. International Journal of Engineering Research and Management. 9:21-27.

Raitila, J., Heiskanen, V-P., Routa, J., Kolström, M. & Sikanen, L. 2015. Comparison of moisture prediction models for stacked fuelwood. Bioenergy Research, published online:

Routa, J., Kolström, M., Ruotsalainen, J., & Sikanen, L. 2015. Precision Measurement of Forest Harvesting Residue Moisture Change and Dry Matter Losses by Constant Weight Monitoring. International Journal of Forest Engineering 26:71-83.

Routa, J., Kolström, M., Ruotsalainen, J. & Sikanen, L. 2015. Validation of prediction models for estimating the moisture content of small diameter stem wood. Croatian Journal of Forest Engineering, 36 (2):111-119.

Spinelli R., Lombardini C. & Magagnotti N. 2014. The effect of mechanization level and har­vesting system on the thinning cost of Mediterranean softwood plantations. Silva Fennica vol. 48 no. 1 article id 1003. 15 p.

Spinelli R, Glushkov S. & Markov I. 2014. Managing chipper knife wear to increase chip quality and reduce chipping cost, Biomass and Bioenergy 62: 117–122

Spinelli R., Di Gironimo G., Esposito G.& Magagnotti N. 2014. Alternative supply chains for logging residues under access constraints. Scandinavian Journal of Forest Research 29: 266–274.

Spinelli R., Cavallo E., Eliasson L., Facello A. & Magagnotti N. 2015. The effect of drum design on chipper performance. Renewable Energy 81: 57-61

Spinelli R., De Francesco F., Eliasson L., Jessup E. & Magagnotti N. 2015. An agile chipper truck for space-constrained operations. Biomass and Bioenergy, 81: 137-143.

Spinelli R. & Magagnotti N. 2014. Determining long-term chipper usage, productivity and fuel consumption. Biomass and Bioenergy 66: 442–449.

Spinelli R. & Magagnotti N. 2014. Using disposable knives to decrease wood fuel processing cost. Fuel Processing Technology 126: 415-419.

Spinelli R., Magagnotti N., Di Fulvio F., Bergström D., Alberti G. & Danelon M. 2014. Comparison of the cost efficiency of mechanized fuel wood thinning systems for hardwood plantations on farmland. Croatian Journal of Forest Engineering 35: 111-123.

Press releases

Press release in English:

Press release in Finnish:



Articles in newspapers and magazines

Energiahanketta johdetaan Joensuusta. Karjalainen, 11.9.2012, p. 10. (in Finnish)

INFRES - We keep the EU's forest energy promises. EFInews, no 2, vol.20, Dec 2012, p. 24.


Ny teknik gör stubbflisen intressant  ATL  9.4.2013  (in Swedish)


Demo av lönsam grovkrossning Vision 2/2013  (in Swedish)


New technologies for drum chippers Bioenergy International No 65, 3 2013.