This open access book foregrounds novel collaborations between the Social Sciences and Humanities (SSH), and Science, Technology, Engineering and Mathematics (STEM) disciplines, for the benefit of European energy policy. Each chapter has been led by a team spanning social and technical disciplines. The book proposes 10 policy recommendations to: Simplify the uptake of community energy; Prioritise societal engagement in geothermal; Create co-learning for energy communities; Facilitate energy literacy; Support place-based strategies for retrofit; Promote integrated policy design for agrivoltaics; Increase social acceptability of low-carbon technologies; Protect digital energy infrastructure; Understand stakeholder perceptions of energy-efficiency measures; and Rethink energy system models to support the just transition. It will be of interest to anyone developing, implementing or critiquing energy policy (locally, nationally or internationally) as well as those looking to expand the use of interdisciplinary research to achieve sustainability goals.  Part of a three-volume collection covering climate, energy, and mobility policy.