Abstract: Disclosed is an electric power supply system which has: a common power source which stores and supplies a power via a local power grid; and a distributed power source which supplies a power to buildings and a surplus to the common power source. The electric power supply system further includes a first power meter measuring the amount of power supplied from a commercial power source, a second power meter measuring the amount of power received from and supplied to the common power source via the local power grid, and a distribution control device which distributes a power from the common power source to the area based on the amounts of power as measured by the first power meter and the second power meter.

Abstract: Residential system includes photovoltaic power system including solar battery, and electrical storage device including battery. Electric load of residential system is selectively supplied with energy from power supply system, power generator and electrical storage device. Power generator allows energy to flow back to power supply system. Energy surplus judgment part calculates difference between generating energy of power generator and demand power for electric load (excess generating energy). Overall operation controller applies stored energy in electrical storage device to demand energy for electric load when excess generating energy is produced, and charges electrical storage device without applying generating energy of power generator to demand energy when excess generating energy is not produced.

Abstract: A controller installed at each consumer side comprises: a power generation amount acquisition unit acquiring the amount of electricity that has been generated in a solar cell; a power selling amount acquisition unit acquiring the amount of electricity for sale that has been allowed to flow into an electric power system by reverse power flow, among the electricity generated in the solar cell; and a power selling suppression control unit configured to set a threshold value for the amount of the electricity for sale, as proportional to the amount of the generated electricity acquired by the power generation amount acquisition unit, and configured to suppress the reverse power flow into the electric power system so that the amount of the electricity for sale is set to the threshold value or less.

Abstract: Disclosed is an electric power supply system which has: a common power source which stores and supplies a power via a local power grid; and a distributed power source which supplies a power to buildings and a surplus to the common power source. The electric power supply system further includes a first power meter measuring the amount of power supplied from a commercial power source, a second power meter measuring the amount of power received from and supplied to the common power source via the local power grid, and a distribution control device which distributes a power from the common power source to the area based on the amounts of power as measured by the first power meter and the second power meter.

Abstract: An object is to allow intuitively understand whether display information displayed on a display device indicates favorable state or unfavorable state for a user. An acquisition unit 11 acquires energy-related information. A communication unit 13 is connected to a display device 3 and an operation device 4. Display information to be displayed on the display device 3 has a stratum structure including first display information as a top tier and second display information, the first display information including at least two categories which express the favorability about the energy-related information, the second display information including plural kinds of information so that the lower tier includes more detailed information. An information generation unit 14 transmits second display information to the display device 3 upon receiving a request from the operation device 4 when first display information is displayed on the display device 3.

Abstract: An electric power control apparatus enables a surplus electric power from a distributed power source to be stored in a storage battery in a consumer unit provided with a distributed power source and a storage battery. The electric power control apparatus is characterized in being provided with a compensation calculating unit which calculates the compensation of electric power by using a unit price of electricity for sale when charging the storage battery and a unit price of electricity for purchase when discharging from the storage battery.

Abstract: The power management system includes: a power management device for managing power to be used by multiple power loads; and a large power-using power load. The large power-using power load is defined as a power load which shows a power consumption larger than a difference between allowable power and an upper limit power smaller than the allowable power when operating at a maximum power consumption. The power management device calculates remaining available power available for the large power-using power load, from the total power consumption of the multiple power loads and the upper limit power, and notifies the remaining available power to the large power-using power load. The large power-using power load starts to operate under a condition that its power consumption is equal to or less than the remaining available power notified by the power management device.

Abstract: In a management device, a state determination table in a first storage portion indicates correspondence relationships in which target achievement levels are respectively associated with combinations with division periods and ranges of amount of power. An action table in a second storage portion indicates correspondence relationships with operations for making an execution portion perform and the target achievement levels. A first extraction portion extracts, from the state determination table, a target achievement level corresponding to a combination with a division period including a date acquired by a date acquisition portion and a range of amount of power including the amount of consumed power acquired by a power acquisition portion. A second extraction portion extracts, from the action table, an operation corresponding to the target achievement level extracted by the first extraction portion.

Abstract: A power control system controls electric devices so as to consume a power generated by a self-generated power facility using a natural energy, which is provided with a surplus power detection unit that detects the surplus portion of power generated by the self-generated power facility, and a device control unit that controls the operation of a plurality of electric devices. When the surplus power detection unit detects the surplus power, the device control unit controls one or more of a plurality of electric devices to perform predetermined operations so as to consume the surplus power.

Abstract: In an energy storage system, power from at least one of a solar cell, a commercial AC power source, and a storage battery is supplied to load devices. In the daytime, under the condition that an amount of power generated by the solar cell is less than an amount of power consumed by the load device, the discharge from the storage battery to the load device is permitted or prohibited if the charge level of the storage battery is higher or is not higher than the reference charge level. The discharge from the storage battery which makes the charge level of the storage battery lower than the reference level is permitted at night.

Abstract: An acquisition unit acquires first measurement values of the amounts of electric power of respective branch circuits or respective load devices and second measurement values of the amount of electric power of a master circuit provided for a building from a measurement device. An overall set unit obtains an overall reference value on the basis of a history of the second measurement values, and the unit receives a reduction target to set an overall target value on the basis of the overall reference value and the reduction target. An individual set unit sets an individual target value by distributing the overall target value set in the overall set unit to the amounts of electric power of the respective branch circuits or the respective load devices as allocation objects. A display instruction unit instructs display of the individual target value and the first measurement values acquired by the acquisition unit.

Abstract: A controller includes a request acquisition unit that receives an operation permission request from a device, a calculation unit that calculates margin electric power derived from measurement by a measurement unit and an upper limit electric power, and a suppression unit that instructs the device to lower electric power consumption. When the margin electric power is less than the required electric power, the controller suppresses electric power consumption in devices in lower priority order stored in a priority storage unit within the suppression unit, such that electric power consumption increase in the management area may remain within the margin electric power. Then the controller issues the requesting device permission-or-denial for the operation, from the calculation unit.

Abstract: A load control apparatus receives information regarding the consumed electric power in load devices and the generated electric power by a power generator. The apparatus includes a control unit, which controls a device based on the received information. A determination unit determines whether the device can execute a predetermined process with surplus electric power in target period from the present until a predetermined period of time elapses. An execution unit controls the device such that when it is determined that the abovementioned process can be executed, a control signal is provided to cause the process to start.

Abstract: An electric power acquisition section acquires a power demand of a load. An assist control section determines that an assist condition is satisfied when the power demand exceeds a threshold value within a time slot for permitting electric power to be supplied to the load. When determining that the assist condition is satisfied, the assist control section presents a selection prompt to inquire whether or not to activate an assist operation for supplying the electric power from a power storage device, on an operation display device through a notification control section. If there is a response for requesting activation of the assist operation from the operation display device in response to the selection prompt, the assist operation is started. The assist condition is set in a storage unit by a condition setting section.

Abstract: A demand measurement unit measures load demand power and a power generation measurement unit measures solar cell output power. A threshold storage unit stores a discharge control threshold for determining whether to discharge remaining storage cell power. When demand power exceeds generated power, a command unit controls storage cell discharge by comparing remaining storage cell power with the discharge control threshold and transmits a control command to a power conditioner. If the remaining storage cell power exceeds the discharge control threshold, then the command unit commands storage cell discharge. A threshold setting unit sets the discharge control threshold, and updates the discharge control threshold when that value changes.

Abstract: A controller executes local generation and local consumption pathways of: supplying power from a solar cell to an appliance, and charging a storage cell with power that remains after subtracting power consumed by the appliance from the solar cell power. In the absence of excess power, the storage cell and solar cell supply power. Power supply from a commercial electrical grid covers a power shortage that remains after subtracting solar cell power and storage cell power from the power consumed by the appliance. The controller also executes a second excess power selling mode pathway wherein excess power flows into the commercial electrical grid, and an assist mode wherein all solar cell power flows into the commercial electrical grid, and storage cell power flows to the appliance.

Abstract: An energy management apparatus includes: algorithm storage unit configured to store at least one energy-saving control algorithm; controller configured to control an operation of controlled device by executing the algorithm and; data storage unit configured to store reduction information corresponding to the algorithm, the reduction information used to figure out a reduction in energy consumption due to the execution of the algorithm; estimation unit configured to estimate the reduction in the energy consumption due to the execution of the algorithm on the basis of the reduction information, when controller controls the operation of controlled device by executing the algorithm; and network communication unit configured to output the estimation result.

Abstract: An object is to allow intuitively understand whether display information displayed on a display device indicates favorable state or unfavorable state for a user. An acquisition unit 11 acquires energy-related information. A communication unit 13 is connected to a display device 3 and an operation device 4. Display information to be displayed on the display device 3 has a stratum structure including first display information as a top tier and second display information, the first display information including at least two categories which express the favorability about the energy-related information, the second display information including plural kinds of information so that the lower tier includes more detailed information. An information generation unit 14 transmits second display information to the display device 3 upon receiving a request from the operation device 4 when first display information is displayed on the display device 3.

Abstract: Residential system includes photovoltaic power system including solar battery, and electrical storage device including battery. Electric load of residential system is selectively supplied with energy from power supply system, power generator and electrical storage device. Power generator allows energy to flow back to power supply system. Energy surplus judgment part calculates difference between generating energy of power generator and demand power for electric load (excess generating energy). Overall operation controller applies stored energy in electrical storage device to demand energy for electric load when excess generating energy is produced, and charges electrical storage device without applying generating energy of power generator to demand energy when excess generating energy is not produced.

Abstract: A controller installed at each consumer side comprises: a power generation amount acquisition unit acquiring the amount of electricity that has been generated in a solar cell; a power selling amount acquisition unit acquiring the amount of electricity for sale that has been allowed to flow into an electric power system by reverse power flow, among the electricity generated in the solar cell; and a power selling suppression control unit configured to set a threshold value for the amount of the electricity for sale, as proportional to the amount of the generated electricity acquired by the power generation amount acquisition unit, and configured to suppress the reverse power flow into the electric power system so that the amount of the electricity for sale is set to the threshold value or less.