To start Energy Management Analysis, the user selects Analysis > Energy Management or picks the button. The first time the user enters the energy manager for a hydraulic model, the Welcome dialog appears.

To create an energy management study, the user picks the New button .

Once a study has been created, the buttons on top of the left pane enable the user to

The right pane of the energy management dialog contains four tabs. The function of each is described below.

The Options tab is shown below.

The bottom portion Options tab is the place where the user selects which scenarios are to be included in the analysis, the percent of the billing period that is represented by each scenario (ideally the values would add to 100%), whether the energy management analysis should rerun the scenario (check) or use the results from the last computed scenario (unchecked) and which scenarios should be considered when determining peak demand costs. It is assumed that the time period over which the energy use is calculated is the same as the model time step. If the peak demand is based on the peak 15 minutes, the model time step (at least for that scenario should be 15 minutes).

If a scenario is included in the list but is later deleted from the model, a fatal error message will be given unless the scenario is also deleted from the Options tab list.

When the user picks the Scenario button in the bottom portion of the right pane, the following dialog appears where the user picks the scenarios to be included in the calculation. Only EPS scenarios can be used. At least one scenario must be selected.

If the user un-checks "Include in cost calculation", that scenario is not used in the calculation but the scenario name is not removed from the list.

In the top portion of the right pane, the user specifies the length of the billing period over which the energy costs are to be aggregated. For example, if the billing period is 30 days, the user should specify 720 hours or 30 days.

Once the energy management analysis calculates the annual energy cost, the user can also determine the net present worth of energy cost. For this calculation, the user must check the box "Calculate Net Present Value" and enter the interest rate and number of periods. The Billing period must be greater than 0, interest rate should be between 0 and 100% and the number of periods must be greater than zero.

In the Power Meter tab for this study, the user can select which pumps or pump stations are to be included in the analysis and whether the energy price and the energy pricing to be used. The energy price selected can be different than that used in the scenario energy cost analysis. A warning will be issued if it is. At least one power meter must be selected or a fatal error message will be issued.

If no Power Meters have been created, the user must first pick the Power Meter button (not to be confused with the Power Meter tab) on top of the left pane. This opens the Power meter dialog where the user associates pumps and pump stations with the power meter serving them. The user should either select individual pumps or the pump station in which the pump is located. If a pump is both selected individually and the pump station it is located in is selected, then it is not double counted but treated as if it is part of the pump station.