This research paper aims to highlight the role of the policy of reducing energy consumption in achieving and ensuring energy security in Algeria, by knowing important aspects affecting the increase in energy consumption, including the impact on energy security in general in Algeria, using the descriptive analytical approach to show the impact of some prominent variables on The aspect of energy consumption in Algeria, with a focus on standard methods for building a model that explains the impact of these variables on energy consumption in Algeria during the period from 1999 to 2018. The results of this study concluded that there is a significant positive impact of three main variables on energy consumption, namely the population, the national car park and the national housing park, and from it the impact on the energy security situation in Algeria, and thus the research concluded that the mechanism of reducing energy consumption in order to ensure Energy security in Algeria revolves around controlling these studied variables.