This paper presents an evidence-based model (the I3E model) for embedding education for sustainability (EfS) within a higher education institution. This model emerged from a doctoral research that examined organisational learning and change processes at the University of Southampton to build EfS into the university curriculum. The researcher aimed to learn from real practice through acting as a facilitator for curriculum development in EfS within an interdisciplinary group of academic staff members. A critical friend position was also acquired within a community of practice to implement a programme which attempted to embed sustainability within the student experience. The I3E model identifies four overarching components that can support universities in their aim to embed EfS within the undergraduate curriculum. These integrated components are: Inform the university community about sustainability; Engage the different university stakeholders in the change process towards sustainability; Empower individuals and groups to make change happen within their sphere of influence and action; and Embed sustainability within existing university structures.