A power generating apparatus includes a power supply, a first sub-end circuit, a second sub-end circuit and an integrated signal generator. The first and second sub-end circuits respectively generate first and second sub-end standby power. The first sub-end circuit receives a first integrated control signal. The second sub-end circuit receives a second integrated control signal. The first sub-end circuit cuts off the first sub-end standby power according to the first integrated control signal and turns on the first sub-end standby power again after a first delay time. The second sub-end circuit cuts off the second sub-end standby power according to the second integrated control signal, and turns on the second sub-end standby power again after a second delay time. The integrated signal generator generates the first and second integrated control signals.

An energy monitoring system is provided including a device such as an inductive clamp associated with an electric circuit and configured to measure current load of the electric circuit and an energy monitoring device. The energy monitoring device comprises a processor and a memory including computer program code, the memory and the computer programming code configured to, with the processor, cause the monitoring device to receive circuit data including the measured current from the inductive clamp, determine a Power Set for one or more intermittent loads associated with the electric circuit based at least in part on the circuit data, determine a solution for the circuit data based on determined Solution Sets of the Power Set, and determine an energy usage for an appliance based on the solution.

Various implementations power homes and businesses without needing to connect to electric utility company-provided power, i.e., they can operate off-grid. Generally the systems includes solar panel racks (e.g., photovoltaic cells on sheets stabilized using ballasts, anchors, or mounting) that generate electrical power used to provide power to a building or that is stored on batteries. The system includes the solar panel racks and an enclosure to be installed at the premises and separate from the building. The enclosure includes the batteries and inverters that are electronically connected to the solar panel racks and batteries. The inverters are configured to convert direct current (DC) electricity from the solar power racks and batteries to alternating current (AC) electricity to provide power to the building via wires electrically connecting the inverters to the main panel of the building.

A frequency response optimization system includes a battery configured to store and discharge electric power, a power inverter configured to control an amount of the electric power stored or discharged from the battery at each of a plurality of time steps during a frequency response period, and a frequency response controller. The frequency response controller is configured to receive a regulation signal from an incentive provider, determine statistics of the regulation signal, use the statistics of the regulation signal to generate an optimal frequency response midpoint that achieves a desired change in a state-of-charge (SOC) of the battery while participating in a frequency response program, and use the midpoints to determine optimal battery power setpoints for the power inverter. The power inverter is configured to use the optimal battery power setpoints to control the amount of the electric power stored or discharged from the battery.

A power saving control device includes: an acquirer that acquires a power saving request; and a controller that determines whether or not power saving control for reducing a power consumption of a load device is to be performed in response to the power saving request, and that, when determining that the power saving control is to be performed, performs the power saving control. When the load device consumes power, the controller determines that the power saving control is not to be performed under a condition that no power flows from a power system into a facility in which the load device is installed, the condition being one of one or more conditions.

A controller circuit for a PV module includes a receiver circuit and a mode control and power conversion circuit. The receiver circuit receives a first signal from a transmitter circuit associated with the PV module. The receiver circuit changes a second signal from a first state to a second state based the first signal. The mode control and power conversion circuit receives a DC string voltage from a string of PV cells associated with the PV module, receives the second signal from the receiver circuit, switches from a first mode to a second mode in response to the second signal being changed to the second state, converts the DC string voltage to a standby voltage in the second mode, and provides the standby voltage to DC power lines between the PV module and a DC-to-AC inverter in the second mode.

A distributed control node enables total harmonic control. The control node measures current drawn by a load, including harmonics of the primary current. A metering device can generate an energy signature unique to the load including recording a complex current vector for the load in operation identifying the primary current with a real power component and a reactive power component, and identifying the harmonics with a real power component, a reactive power component, and an angular displacement relative to the primary current. The control node can control a noise contribution of the load due to the harmonics as seen at a point of common coupling to reduce noise introduced onto the grid network from the load.

Systems, methods, and computer readable media for power outage determination. A device may determine an indication that an outage has occurred on a cable network based on a status of a network device within the cable network, wherein the network device receives power from a power network. The device may determine location information for at least a portion of a plurality of network devices, including the network device, within the cable network. The device may determine a cable topology of the cable network at an area that includes a location that corresponds to the network device. The device may determine a power topology of the power network at the area. The device may analyze the cable topology and the power topology at the area. The device may identify one or more potential failure locations on the power network.

There is provided a power converter unit that can include an inverter and a plurality of batteries. The power converter unit can include a battery energy storage system (BESS) and an inverter. The BESS and the inverter can share at least one protection circuit.

A fuel dispenser includes a power distribution system having an alternating current (AC) power supply and an AC to direct current (DC) power converter configured to convert a portion of the AC power to DC power for one or more DC peripheral components associated with the fuel dispenser. The power distribution system also includes processing circuitry configured to power down at least one of the DC peripheral components in response to an actuator, cause an indicator to be activated indicating that the DC peripheral components are de-energized and the AC power supply is active, power up the at least one direct current peripheral component in response to the actuator when the direct current peripherals are de-energized, and cause the indicator to be activated to indicate that both the DC peripheral components and the AC power supply are active.