Household energy storage systems are fast changing how and when power is consumed within a residence. These systems are built to hold electrical energy so that it can be used later, this providing an efficient management tool for power and also one which is reliable. Instead of just providing the how much and when of power savings, they also fulfill all this product's necessary functions: taking in surplus power from renewable sources, such as solar panels or the grid during off-peak periods; then when power usage peaks (but is not available) releasing stored energy as needed. The Technological aspect lies in advanced battery technology, extending battery life and raising energy density; smart management systems which make the best use of energy substations to minimize passages between points of low power and those with high demand. The units are compact making them suitable for residential installations, and come with a host of safeguards to ensure that no accidents occur. Household energy storage can be used to reduce electricity charges, will serve as an alternative power source for when blackouts occur and makes off-grid living possible.