Heat dissipationHeat dissipation of aluminumAluminum electrolysis cell is closely related to energy consumptionEnergy consumption. Based on the energy consumption trend of aluminum electrolysisAluminum electrolysis in the past 20 years, the energy consumption was divided into three stages. The heat dissipationHeat dissipation of electrolysis cell in the three stages was studied. In the first stage (2000–2009), the total heat dissipation of the typical electrolysis cell was about 1.9–2.0 V. In the second stage (2009–2014), the total heat dissipation of the typical electrolysis cell was about 1.8–1.9 V. In the third stage (2015 to date), the total heat dissipation of the typical electrolysis cell was below 1.8V. The change in heat dissipationHeat dissipation reflects the development trend of energy savingEnergy saving technology of aluminum electrolysisAluminum electrolysis and the control strategy and idea of energy balanceEnergy balance of electrolysis cell. This study will provide theoretical support and data reference for energy balance control and energy savingEnergy saving of aluminum electrolysisAluminum electrolysis.