The electricity cost is one of the major cost drivers of eCO 2 R technologies . A straightforward solution to the electricity cost reduction is to lower the overpotential of, particularly, the anode oxygen evolution reaction . On the other hand, if an eCO 2 R process is powered by grid electricity, one can adjust the plant load to fluctuations in electricity (spot) prices. This flexible operation, namely demand side management (DSM) or demand response (DR), leads to savings in overall electricity costs . In academia, DSM has been applied to various industrial plants, such as air separation units, chlor-alkali plants, and aluminium plants .