Well, I can say that you can set ranges for your IP schema (see image) so if your site have static ranges, that'll be easy to set up and then drill down as needed. This can be a widget on your dashboard, and when drilled-down, shows the range.
As to the power options and reporting, there is a specific report as to when systems have powered on/off built in. If you head to the Reports section - search for 'power' and it'll be near the bottom.
There might be bigger brains that could answer it more in depth.
I'm unsure about the specific power reporting akin to when you are looking at the single system and can see when it's been on, rebooted, hibernation, etc. I'm sure a small tweak to one of the reports could provide that information. The report boards are also pretty good about getting a skeleton of a report going.