Abstract: A post-control electric power amount curve generating portion generates plural pieces of running control information indicating a changeable running method for each device and plural post-control electric power amount curves indicating an amount of main electric power. A post-control hot water storage amount curve generating portion generates post-control hot water storage amount curves each indicating an accumulated amount of hot water generated in a case where the fuel cell generates electric power based on the plural post-control electric power amount curves. A hot water storage completion determining portion determines whether the accumulated amounts exceed a specific heat capacity. A reduction amount calculating portion calculates plural energy cost reduction amounts produced before and after the change using the post-control hot water storage amount curves determined as not exceeding the specific heat capacity.

Abstract: Energy saving and economical efficiency of a fuel cell are enhanced. A post-control electric power amount curve generating portion 6 generates plural pieces of running control information each indicating a changeable running method for each device and plural post-control electric power amount curves each indicating an amount of main electric power for every specific time obtained in a case where the running method of the device is changed in response to the plural pieces of running control information. A post-control hot water storage amount curve generating portion 7 generates plural post-control hot water storage amount curves each indicating an accumulated amount for every specific time of hot water generated in a case where the fuel cell generates electric power on the basis of the plural post-control electric power amount curves.

Abstract: A fuel-cell power generation system includes a fuel-cell power generator, a power measurement section for measuring an actual power-consumption value in a household appliance, and a power-consumption estimation section for estimating a future power-consumption value over a given time-period after a given time point, in accordance with the actual power-consumption value measured by the power measurement section. Moreover, the system includes a power-generation instruction section for determining the need of startup/stop of the fuel-cell power generator in accordance with the estimated power-consumption value from the power-consumption estimation section.

Abstract: An operating condition determiner compares an operation starting time (t1) of network-connected first consuming apparatuses received by a schedule information receiver and a consumption starting time (t2) predicted by a predicting system based on a total consumption amount of the first consuming apparatuses and a second consuming apparatus, which is not network-connected, and determines the operation starting time (t1) as an operation starting time of a fuel cell if the operation starting time (t1) is earlier than the consumption starting time (t2) while determining the consumption starting time (t2) as such if the operation starting time (t1) is later than the consumption starting time (t2), so that the fuel cell can stably generate power. The fuel cell can stably supply power at a time when the consuming apparatuses start consuming power.

Abstract: An operating condition determiner compares an operation starting time (t1) of network-connected first consuming apparatuses received by a schedule information receiver and a consumption starting time (t2) predicted by a predicting system based on a total consumption amount of the first consuming apparatuses and a second consuming apparatus, which is not network-connected, and determines the operation starting time (t1) as an operation starting time of a fuel cell if the operation starting time (t1) is earlier than the consumption starting time (t2) while determining the consumption starting time (t2) as such if the operation starting time (t1) is later than the consumption starting time (t2), so that the fuel cell can stably generate power. The fuel cell can stably supply power at a time when the consuming apparatuses start consuming power.

Abstract: Disclosed is a fuel-cell power generation system including a fuel-cell power generator 100. The system comprises a power measurement section 230 for measuring an actual power-consumption value in a household appliance, a power-consumption estimation section 200 for estimating a future power-consumption value over a given time-period after a given time point, in accordance with the actual power-consumption value measured by the power measurement section 230, and a power-generation instruction section 220 for determining the need of startup/stop of the fuel-cell power generator 100 in accordance with the estimated power-consumption value from the power-consumption estimation section 200. The power generation system can estimate power consumption to be varied between homes to efficiently control the power generation so as to achieve a desirable energy saving performance.

Abstract: To provide a building renovation supporting apparatus capable of drafting and presenting efficient renovation plan, the proposing means 51 creates the renovation blueprints composed of third dimensional path diagrams of particular view-point, line of sight direction and the view angle corresponding to each types of condition of the symbol diagram to be inputted from the inputting means 10 with many view-point information, visual lien direction information and the view angle information necessary for drafting the third dimensional path diagrams being corresponding to various types of condition of one type of symbol diagrams such as position, direction, angle or the like respectively.