The Green Erasmus guidelines for environmental activities are targeted at any local student associations wishing to engage international and local students and work together with local environmental associations to understand environmental issues by using a learning-by-doing approach. The Green Erasmus project strived to improve the environmental sustainability of the Erasmus+ Programme and raise awareness across the European Higher Education sector about the importance of sustainable internationalisation. The project focused on developing an Educational Portal on Sustainable Internationalisation and carrying out comprehensive analysis of the environmental impact of Erasmus mobilities.