Energy Dashboard: Limit hours of day

Hi
I’m using the Energy Dashboard with my powermeter. It works really good. But my home has an electric boiler to heath water during night which is remotely controlled. It is using quite a lot of energy. This leads to a spike in the dashboard and limits the values seen for the rest of day as they are hidden by the big spike.

Water heated:

Without warm water:

It would be perfect, if the view could be set to show only certain hours (e.g 8am to 8pm) and this setting would be persisted. This goes probably in the same direction as Energy Dashboard - Persistent Timezone & Grouping options

The values and calclulations are fine. Just the display of the bar graph should be conigurable to hide the peaks.