<p>The development of energy solutions for resorbtronics and particularly bioresorbable implantable medical devices represents a critical frontier in transient biomedical technologies. This review examines current approaches to powering temporary implants, including bioresorbable batteries, wireless energy transfer, and self-powered systems. Particular attention is devoted to recent advances in metal-ion battery technologies, their biological acceptance, and material selections tailored for transient medical applications. The integration of these energy solutions with biocompatible, biodegradable, and ultimately bioresorbed while eliminable materials is enabling fully autonomous temporary devices that function reliably over a defined therapeutic window and then disappear without surgery. By outlining the material foundations, device architectures, and trade-offs in performance stability, and by linking encapsulation and rate-control approaches to clinically relevant lifetimes, we highlight the key definitions, prospects, and remaining scientific and regulatory barriers of bioresorbable energy systems.</p> Graphical abstract <p></p>