We are pleased to inform that next progress meeting was held on 14 May 2021. The meeting was attended by representatives of all HEETII project Partners. This time we were hosted by the Silesian University of Technology, the coordinator of WP2. During the meeting were discussed progress in development of technical projects (WP2) and construction of hardware model (WP3). The achievements of WP1 were summarised and the results of the evaluation carried out by TGK1 were presented. Next technical and dissemination goals were set. It was agreed that the next meeting will take place in the 2nd half of 2021 and will be organised by SWE as coordinator of WP3.