Against the backdrop of a profound global energy transition and escalating ecological and environmental risks, the Journal of Geo-Energy and Environment (JGEE) is launched to build a high-level scholarly platform at the intersection of 'Geo-Energy–Environment–Ecology'. JGEE focuses on conventional fossil energy, geothermal energy, and natural gas hydrates, as well as new energy sources such as hydropower, photovoltaics, and hydrogen, and advocates a closed-loop and cross-scale integration of theory–technology–numerical simulation–experiment. It concentrates on energy–environment coupling and resource management, including Carbon capture, utilization, and storage (CCUS), methane mitigation, subsurface energy storage, and systems optimization under the “Water–Energy–Land” nexus; it strengthens the constraining and enabling roles of ecological and environmental science in energy development, with attention to biodiversity, land and water resource management, ecosystem services, and nature-based solutions. We extend an invitation to the academic, engineering, policy, and industrial communities to promote cross-disciplinary collaboration and evidence-based decision-making, to advance synergistic co-benefits in high-efficiency, low-carbon energy utilization and ecological environmental protection, and to provide methods, evidence, and pathways for a sustainable future.