The present invention provides a method for controlling a building by predicting building energy, comprising the steps of: (a) constructing a design model, by a design model construction module (100), using building design information; (b) adding information on an actual building, by an analysis model construction module (200), to the design model to construct an analysis model; (c) determining building prediction information, by a prediction module (600), on the future amount of unit time; (d) simulating the building energy of the analysis model, by a building energy simulation module (300), using the determined prediction information; (e) generating, by a control value generation module (400), an actual building control value which minimizes energy consumption corresponding to the simulation resu and (f) controlling the actual building for the amount of unit time, by a BEMS (Building Energy Management System) (500), according to the control value.
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