TECNALIA participated in the 21st International Conference on the European Energy Market (EEM), held in Lisbon, Portugal, from May 27th to 29th May 2025. Hosted by ISEL at Polytechnic University of Lisbon, the event gathered speakers from recognized energy institutions, industry, and academics to discuss about the most recent developments in energy markets. The presented research paper entitled “A Bidding Algorithm for the Joint Participation of Distributed Energy Resources in Day-Ahead Energy and MFRR Markets” co-authored by Nerea Ruiz, Joseba Jimeno, David González and Iñigo Muñoz from TECNALIA, is available at https://ieeexplore.ieee.org/document/11050095 .