Abstract: According to an embodiment, a status estimation apparatus includes detector, calculator, estimator and specifying unit. Detector detects a status change of any of electrical devices based on measurement data of a current flowing in a distribution line supplies power to the devices. Calculator calculates a current waveform change and a power change associated with the status change based on the measurement data. Estimator estimates a candidate originating from the status change based on the current waveform change. Specifying unit specifies a device caused the status change and a type of the status change based on the power change and an estimation result of the candidate.

Abstract: According to one embodiment, energy management system includes client and server. Server includes acquisition unit, estimation unit, calculator and controller. Acquisition unit acquires, from the client, data concerning electrical equipment of a customer to which a power grid supplies power. Estimation unit estimates energy demand of electrical equipment based on acquired data. Calculator calculates operation schedule of electrical equipment, which can optimize energy balance of customer, based on the estimated energy demand. Controller transmits control information to control electrical equipment based on calculated operation schedule to client.

Abstract: According to one embodiment, energy manager includes first estimator, second estimator, creator and controller. First estimator estimates power amount of power generator. Second estimator estimates energy demand. Creator creates schedule of devices based on estimated power amount and energy demand. Controller controls the devices based on the schedule. Second estimator includes storage, extractor and calculator. Storage accumulates load data. Extractor extracts load patterns including different load data. Calculator calculates weight for each of extracted patterns. Creator includes simulator and scheduler. Simulator simulates evaluated value of each schedule based on the pattern and weight. Scheduler creates schedule based on evaluated value.

Abstract: According to one embodiment, an electrical quantity adjusting apparatus connected to an electrical facility includes a memory unit that stores a target level which is a target electrical quantity, a presenting level deciding unit that decides a presenting level to an exterior, the presenting level being an electrical quantity relating to the electrical facility and corresponding to at least a part at the target level, a presenting level output unit that outputs the presenting level decided by the presenting level deciding unit to the exterior via a communication network, a presenting level receiving unit that receives a presenting level from the exterior via the communication network, and an adjusting unit that adjusts the electrical quantity relating to the electrical facility based on the target level, the presenting level decided by the presenting level deciding unit, and the presenting level received by the presenting level receiving unit.

Abstract: According to one embodiment, a seawater desalination system includes a membrane filtering pump, a first to third flowmeter, a filtering membrane, a high-pressure pump, a pressure gauge, a reverse osmosis membrane, a discharge valve and a control module. The membrane filtering pump outputs seawater according to a first control signal. The first flowmeter measures flow rate Q1. The high-pressure pump outputs filtered water from the filtering membrane according to a second control signal. The first pressure gauge measures pressure P1. The reverse osmosis membrane desalinates the filtered water into fresh water. The second flowmeter measures flow rate Q2. The third flowmeter measures flow rate Q3. The discharge valve discharges a high-concentration salt water according to a third control signal. The control module performs first, second, and third flow rate control with reference to the flow rate Q1, Q2 and Q3 and the pressure P1.