Container energy storage systems have a profound impact on the power factor. Their ability to perform power factor correction, mitigate reactive power fluctuations, and improve the overall efficiency of electrical systems makes them a valuable asset in the modern energy landscape. . Power factor is a measure of how effectively electrical power is being used in an alternating current (AC) circuit. It is the ratio of real power (measured in kilowatts, kW) to apparent power (measured in kilovolt - amperes, kVA). A power factor of 1 (or 100%) indicates that all the electrical. . The importance of reactive power compensation for power factor (PF) correction will significantly increase with the large-scale integration of distributed generation interfaced via inverters producing only active power. In this work, we focus on co-optimizing energy storage for performing energy. . This special issue of Electrical Engineering—Archiv fur Elektrotechnik, covers energy storage systems and applications, including the various methods of energy storage and their incorporation into and integration with both conventional and renewable energy systems. Energy storage systems are. . Demand-side management has been demonstrated as an efficient and feasible method to unlock the flexibility on the demand side and support the flexible regulation of power systems. In integrated energy systems (IES) of buildings, through energy storage systems (ESS) and demand response methods, the. . Voltage regulation on distribution networks is becoming increasingly more complex due deployment of distributed generation (DG). Reverse power flows and excessive reactive voltage rise, and can be directly linked to the installation of distributed renewable energy and in particular large. . In power systems, the integration of energy storage equipment can impact grid power factor, sometimes causing it to drop. A lower power factor may lead to penalties for electricity consumers, negatively affecting both the economic benefits of energy storage and corporate power usage. So, why does. .