Association BIOMASA as the co-organiser of the European Sustainable energy week 2011 in Slovakia, realized excursion in Pellet production unit in Kysucky Lieskovec focused on EFFECTIVE AND  ENVIRONMENTALLY FRIENDLY HEATING during the Energy week 2011. The excursion was designed especially for youth and it was ispossible for the students to participate in the excursion during the whole week from 11 April to 15 April 2011.