Energy Geotechnics has emerged as a crucial discipline that significantly advances sustainable energy practices, carbon neutrality, and climate change mitigation. This paper provides some experimental and theoretical developments, focusing on recent contributions by the authors, particularly in applications such as nuclear waste storage, energy geo-structures, and carbon capture and storage. It begins with a comparison between traditional geomechanical approaches and the requisite advanced multiphysical methodologies in Energy Geotechnics. The paper then discusses through examples the crucial role of Hydro-Mechanical (HM) couplings, along with Thermo-Hydro-Mechanical (THM) and Chemo-Hydro-Mechanical (CHM) processes. These processes are pivotal in enhancing energy efficiency, reducing emissions, and promoting sustainable urban development, underscoring the need for continued exploration and understanding of these complex interactions.