Annex XI – earlier work

The information below refers to the initial scope of the Annex (1 March 2008 – 31 December 2016).

This Annex started already in March 2008 and the initial scope was completed during 2017. During 2017 a workshop called “The role of industrial biorefineries in a low-carbon economy” was held together with the IEA Bioenergy TCP.

Since transferred to a long-standing Annex in 2016, preparations for new tasks have been made and the future scope is being developed. Information will be posted at the Annex XI page of this website.


The final report from Annex XI was published in April 2018.


Annex XI has a multi-disciplinary approach to the concept of biorefineries integrated in industrial complexes, aiming at the optimization of energy efficiency in global terms. The approach is based on industry needs and application, combining the knowledge of industrial technologies with energy efficiency and biomass conversion processes. Different industrial sectors are considered, including the integration of bio with oil refineries, together with CCS options yielding hydrocarbons/hydrogen, looking into technology and systems aspects for a better use of energy.

Annex XI was launched in 2008 and has developed with the objective of sharing knowledge and experiences, as well as conducting research assessment based studies and R&D projects to promote the industry-based biorefineries concept. Annex XI involves all IETS Member countries.

So far, activities have been implemented to reinforce international cooperation to structure partnerships that lead to optimization of energy efficiency in existing and new integrated industrial plants. Activities also include R&D on sustainability assessments, biofuels/bio-materials production technologies, and yields from thermo-chemical and biological conversion of biomass and waste materials.

Description of Annex

The Annex is divided into four tasks:

  1. Bioenergy & Biofuels,
  2. Biochemicals & New Fibre Materials
  3. Sustainability Analysis of Process Integrated Biorefineries.
  4. Process Integration of Gasification-based Biorefineries

The following R&D specific areas as opportunities for cooperation has been identified:

  • Sustainability studies
  • Process Integration for optimization of energy efficiency
  • Catalysis
  • Enzymes
  • Pyrolysis
  • Gasification
  • Carbon fixation for biodiesel production using microalgae

The program of work has been set up to improve international collaboration and to add initiatives related to one or more of the above mentioned areas. The Annex structure now consists of the four following projects:

  • BUGWORKERS – New tailor-made PHB-based nano-composites for high performance applications produced from environmentally friendly production routes
  • ALGAECASCAD – The biorefinery of Algae
  • Integrated Biofuel Production Processes Based on Systematic Optimization Methodologies
  • Process Integration of Gasification-based Biorefineries

Annex XI official website

Annex XI has it’s own official website which can be accessed here.

Past Events

3rd Iberoamerican Congress on Biorefineries (3-CIAB) in November 23 to 25, 2015

More Information on the Congress website !

International workshop: On the way from Biorefineries to a Bioeconomy, 12 September 2014, Oporto, Portugal

Presentations from the Workshop (a virtual CD with all material could be sent by request to

Erasmus IP-Course : HIntBioref at Lisbon 13, 26 July 2014 (2nd Edition)

Erasmus IP-Course : HIntBioref at Lisbon 14, 27 July 2013 (1st Edition)

Further information please contact Prof. Henrique Matos.

Workshop in Bruges, Belgium, 2012

Read more about the workshop here.

Annex XI Contact Details

Annex manager and responsible for Task 1 (Bioenergy & Biofuels):
Isabel Cabrita, LNEG – National Laboratory of Energy and Geology, Lisboa, Portugal

Responsible for Task 2 (Biochemicals and New Fibre Materials):
Alexandre Gaspar, Instituto de Investiga o da Floresta e Papel, Portucel Soporcel, Portugal

Responsible for Task 3 (Sustainability Analysis of Process Integrated Biorefineries):
Henrique Matos, Instituto Superior T cnico, Universidade de Lisboa, Portugal

Responsible for Task 4 (Process Integration of Gasification-based Biorefineries ):
Thore Berntsson, Chalmers University, Sweden