Achieving a sustainable, carbon-neutral society requires innovative strategies that integrate environmental sustainability with economic viability. Despite various initiatives to enhance carbon dioxide capture and recycling efficiency, cost remains a significant barrier. Solid oxide electrochemical reactors (SOERs) offer dual functionalities within a single system, enabling simultaneous electrochemical halfreactions for water splitting, CO2 reduction, and alkane conversion to olefins (Table ). In SOERs, CO2 conversion occurs at the cathode (CO2 + 2e⁻ → CO + O 2 ⁻) while propylene, a high-value chemical, is produced from inexpensive propane at the anode (C3H8 + O 2 ⁻ → C3H6 + H2O + 2e⁻). The overall electrochemical reaction, using excess renewable electricity in the SOER (C3H8 + CO2 → C3H6 + CO + H2O in Figure ), presents a compelling opportunity to merge environmental sustainability with economic viability, thereby accelerating the transition to a carbon-neutral future.