An inverter system includes a plurality of inverters and a communication apparatus. The inverter is configured to convert a direct current into an alternating current. A first inverter is connected to at least one second inverter through a power line, and the first inverter communicates with the second inverter through the power line based on a first protocol stack. The communication apparatus is connected to the first inverter. A second protocol stack and a third protocol stack are included. The communication apparatus is configured to communicate with the first inverter based on the second protocol stack, and communicate with a management device based on the third protocol stack.

A modular remote current monitoring device plugs into a single-pole mounting location on a power distribution panel of a direct-current (DC) power system, e.g., where a circuit breaker, fuse, shorting device, or other target device would ordinarily be installed. The target device plugs into the modular device (e.g., via bullet-type connectors) such that an individual (e.g., single-pole) current is conveyed between the power distribution panel and the target device via the modular device. The modular device senses an amperage of the individual current and reports the sensed amperage to a remotely located end user or controller. The end user or controller similarly may interrupt (disable) or reset (enable) the current from a remote location via the modular device.

A load control system may include multiple control devices that may send load control messages to load control devices for controlling an amount of power provided electrical loads. To prevent collision of the load control messages, the load control messages may be transmitted using different wireless communication channels. Each wireless communication channel may be assigned to a load control group that may include control devices and load control devices capable of communicating with one another on the assigned channel. A control device may send load control messages to a load control device within a transmission frame allocated for transmitting load control messages. The transmission frame may include equal sub-frames and load control messages may be sent at a random time within each sub-frame. Control devices may detect a status event within a sampling interval to offset transmissions from multiple control devices based on detection of the same event.

A voltage controller device, a method for determining the optimized operating point and a voltage control system for branched electrical energy distribution networks including voltage meters installed at the points where it is of interest to control the voltage, internally having communication in the LPWA standard. An LPWA modem collects this information and passes it on to the Branched Network Voltage Controller, which internally has the specialist algorithm for the calculation of the Tap that must be selected in the Voltage Regulator so that the voltages at all points of interest are as much as possible within the specified limits. For this, it sends a command to the Voltage Regulator controller in the form of a voltage at the input of the TP, being compatible with the legacy in the field, or in the form of a command in an application protocol for compatible Voltage Regulator controllers.

A system of modules which control and measure energy usage at a building which are in communication with a software program executing on a remote server controlled by a third party. The third party said usage via the software program which communicates with the modules to modify energy usage and demand for energy and is responsible or liable for energy usage charges the building where the third party does not actually use the energy.

Systems, methods, and apparatus for smart electric power grid communication are disclosed in the present invention. At least one grid element transmits at least one registration message over an Internet Protocol (IP)-based network to at least one coordinator. The at least one coordinator registers the at least one grid element upon receipt of the at least one registration message. The at least one grid element automatically and/or autonomously transforms into at least one active grid element for actively functioning in the electric power grid. The at least one coordinator tracks based on revenue grade metrology an amount of power available for the electric power grid or a curtailment power available from the at least one active grid element.

A load control system may control an electrical load in a space of a building occupied by an occupant. The load control system may include a controller configured to determine the location of the occupant, and a load control device configured to automatically control the electrical load in response to the location of the occupant. The load control system may also include a mobile device adapted to be located on or immediately adjacent the occupant and configured to transmit and receive wireless signals. The load control device may be configured to automatically control the electrical load when the mobile device is located in the space. The load control system may further comprise an occupancy sensor and the load control device may automatically control the electrical load when the occupancy sensor indicates that the space is occupied and the mobile device is located in the space.