Submissions accepted for The 8th International Conference on ICT for Sustainability (ICT4S 2022), Demonstrations and Posters Track Proceedings, Plovdiv, Bulgaria, Mon 13 - Fri 17 June 2022. Most of the submissions are included in the arXiv proceedings while some demonstrations and posters are out of arXiv publication scope as the ICT4S scope is broad and multidisciplinary. Corresponding posters are available on the ICT4S2022 - Demonstrations and Posters page.