1. A method for energy analysis, the method performed by a data processing system and comprising: receiving a plurality of environment objects; receiving energy attributes corresponding to one or more of the environment objects; simulating the operation of the environment objects, including simulation of a non-productive state of at least one of the environment objects; during the simulation, calculating values for the energy attributes reflecting the energy use for the respective energy attributes, including values for energy attributes of the at least one of the environment objects in the non-productive state; and displaying the calculated values for the energy attributes, wherein the calculating and displaying acts are repeated while the simulation continues to dynamically update the displayed calculated values.