Abstract: Disclosed herein are systems and methods for power management in an EV charging site. A method may comprise sizing a plurality of electrical feeders. Once the feeders are sized, the site connects a plurality of energy storage systems to the plurality of electrical feeders. Then, the site connects a plurality of electrical loads to the plurality of energy storage systems and to the electrical feeders. Electrical loads of the plurality of electrical loads are interspersed with one or more energy storage systems of the plurality of energy storage systems. Next, for an electrical feeder of the plurality of electrical feeders, the site monitors a current flow at one or more points of connection of the electrical feeder to a load of the plurality of electrical loads. Then, the site provides power from the electrical feeder to the load while maintaining a current or a temperature at the electrical feeder to below a design limit.

Abstract: The present disclosure provides systems for charging electric vehicles. A system may comprise an electrical load comprising an electrical vehicle (EV) charging site, wherein the EV charging site comprises a plurality of EV chargers and a plurality of battery energy storage systems (BESSs); a main utility feed that connects the electrical load to a power grid, wherein the main utility feed has a power capacity; a sensor configured to measure power on the main utility feed; and a controller communicatively coupled to the sensor and the plurality of BESSs, wherein the controller is programmed to cause: (i) a subset of the BESSs to charge using power from the main utility feed when the power on the main utility feed does not exceed a threshold, and (ii) a subset of the BESSs to discharge power when the power on the main utility feed does exceed the threshold.

Abstract: Embodiments disclosed include photovoltaic power systems and methods for manufacturing the same. A photovoltaic power system can include a photovoltaic array, a DC to AC inverter, a positive conductor electrically connecting a positive inverter terminal of the DC to AC inverter to the positive array terminal and a negative conductor electrically connecting a negative inverter terminal of the DC to AC inverter to the negative array terminal, a positive-conductor ground electrically connected by a switch to the positive conductor, and a negative-conductor ground electrically connected by a switch to the negative conductor.

Abstract: A photovoltaic power system can include a switched grounding system.