# KiCad Eeschema: Defining separate power rails for hierarchical sheets

I have a root sheet like the following, and I'm having issues figuring out how to properly define separate power nets for each hierarchical sheet.

As in the image below, I have two circuits separated by a connector.

How can I keep the power nets of these two circuits separate?

My current attempt at this was to do the following in the sub sheet, but it doesn't seem to work since my understanding is that the default power nets are global (are connected across sheets).

If this isn't possible, should I be creating a new project for each separate circuit?

You've already connected +5V and GND directly to Clock Generator and I assume You also use the same net names on Clock Generator sheet. Next, P38 and P40 are connected to Memory Unit sheet - to this point it's fine, You have separated nets. Now You have to give different names to power nets on Memory Unit sheet, for example +5Vmem and GNDmem.