A method, apparatus, system and computer program is provided for controlling an electric power system, including implementation of voltage measurement using paired t statistical analysis applied to calculating a shift in average usage per customer from one time period to another time period for a given electrical use population where the pairing process is optimized using a novel technique to improve the accuracy of the statistical measurement.

An energy management system is disclosed having an in situ processing unit with a measuring unit capable of measuring a set of power related parameters over a main electricity cable. The system has a first processing unit capable of processing the power related parameters by applying a signature detection algorithm, for detecting an event relating to turning ON or OFF an electronic and/or electric appliance and for characterizing the event. The system also has means for transferring to a server a data packet having an output of said signature detection algorithm. The processing unit triggers the transfer of a data packet only in case such an event is detected. Also disclosed is a method for monitoring the use of electronic and/or electric appliances.

Described embodiments relate generally to energy harvesting systems and interface devices for such systems. In particular, such energy harvesting systems may be configured to harvest kinetic energy from the environment, such as wind, hydro, wave or geothermal energy or to harvest electromagnetic energy like solar radiation. Embodiments also relate to systems and methods to facilitate remote monitoring and/or control of a system comprising an interface device.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of energy controllers. Each energy controller is operable to control at least one of the electrical loads. The load control system also includes a first broadcast controller that has a first antenna and a second antenna. The first antenna is arranged in a first position and the second antenna is arranged in a second position that is orthogonal to the first position. The broadcast controller is operable to transmit a first wireless signal via the first antenna and a second wireless signal via the second antenna. Each of the energy controllers is operable to receive at least one of the first and second wireless signals, and to control the respective load in response to the received wireless signal.

An energy management device includes a measurement manager and a communicator. The measurement manager manages energy information based on a physical quantity measured from at least one measurement object belonging to each of a plurality of energy types in a customer. The communicator communicates the energy information of each of the energy types to another device over a network.

A solar panel is disclosed that can be daisy-chained with other solar panels. The solar panel automatically generates output alternative current (AC) power that is in parallel with input AC power coming into the solar panel when the solar panel senses the input AC power so that the solar panel operates as a slave in this state. The solar panel automatically generates standalone AC output power when the solar panel fails to detect input AC power coming into the solar panel where the solar panel operates as a master in this state. The solar panel generates the standalone output AC power without any reliance on input AC power generated by a utility grid and/or other AC power sources external to the solar panel.

A mobile kiosk may house a configured to receive commands to control the mobile kiosk. The mobile kiosk may include an enclosed space housing at least a portion of the circuit and a base supporting the enclosed space. The mobile kiosk may be configured to be movable.

An apparatus and a method are for varying an impedance of a phase line of a segment of a first electrical power line, the phase line including n conductors electrically insulated from each other and short-circuited together at two ends of the segment. The apparatus includes at least one controllable switching device for connection with at least one of the conductors. The apparatus also includes a controller for performing control of the at least one controllable switching device, the controller having at least one optical port for receiving first optical signals on which the control is based, and for sending second optical signals to adjacent switching apparatuses, the second optical signals including status information of the one switching apparatus, upon which control of adjacent switching apparatuses is based.

A wireless process variable transmitter for use in an industrial process includes a process variable sensor configured to sense a process variable of the industrial process and provide a process variable sensor output. A battery power source includes a plurality of battery power banks each having a primary cell battery, a low voltage cut-off circuit electrically connected to the primary cell battery which provides an electrical connection to the primary cell battery while a voltage of the primary cell battery is above a threshold, and an ideal diode having an input electrically connected to the primary cell battery through the low voltage cut-off and providing a power bank output. A power sharing node has an input connected to the battery power bank output of each of the plurality of battery power banks and having a shared power output which provides power to circuitry of the wireless process variable transmitter.

A solar-energy derived charging system for use in an off-grid or grid-tied environment to provide electrical power to electrical devices is disclosed. The solar-energy derived charging system includes a support structure for a plurality of photovoltaic cells and an energy storage device in electrical communication with the plurality of photovoltaic cells. A control system is provided configured to monitor and control the operation of the solar-energy derived charging system, the control system in communication with a remote network and including a software application. The software application may be configured to utilize data from the solar-energy derived charging system and secondary source of data to provide reports to the user, and facilitate a user planning and managing their recreational activity.