Technical FAQs

# Why does the Demand quantity show N/A for the Energy Cost Summary report in Advanced Reports?

The reason the Demand quantity shows N/A is because of the demand calculation type chosen in the report.
If the "Coincedent" demand calculation method is chosen, the actual quantity will populate in the report.

If the "Independent" demand calculation method is chosen, N/A will populate in the report instead of the number:

This is actually not a bug in the software. The Independent demand calculation cannot choose just one demand peak.

Here's a description of the demand calculations:
1) Coincident (with a Main Device) You have selected a main, and you want the peak demand date/time of the main device to be used for all sub-devices in this report. If a TOU schedule is selected, peak demand is determined by comparing the demand intervals in the TOU period (on-peak, off-peak, etc.). If there are multiple peaks, only the last peak is reported. Example: TOU1 is defined as 6:00-10:00 and 16:00-18:00 (4-6pm). The peak demand for the Main is determined during TOU1; the associated date/time is applied to the sub-devices which provides demand coincident with the main. This process is repeated for all defined TOU periods.

2) Coincident (without a Main Device) You have not selected a main; peak demand date/time is calculated by finding the demand interval with the highest demand sum for all of the devices selected for the report. This sum becomes the peak demand value. The date/time of the peak demand is applied to all devices in the report. If a TOU schedule is selected, peak demand is determined by comparing the demand intervals in the TOU period (on-peak, off-peak, etc.). If there are multiple peaks, only the last peak is reported.

3) Independent You want the peak demand value and time to be determined for each individual device. Peak = the Max of the Absolute value of each sample. The peak Demand for a given TOU period (on-peak, off-peak, etc.) is obtained from its time band in the TOU period. If there are multiple peaks, this report uses the last peak.

Legacy KB System (APS) Data: RESL204476 V1.0, Originally authored by MaTh on 02/04/2011, Last Edited by MaTh on 02/04/2011