Have you measured how much energy it uses once you have your frigate continuously recording and go2rtc multiplexing all the streams
In my setup, Frigate runs on some 6th gen Intel desktop chip with a coral accelerator that regularly dies, however, on this old mainboard, it does not take the whole USB controller with it (contrary to the 9th gen intel host I've used previously).
I couldn't tell you how much of that system's power draw is frigate as it does a lot of stuff beyond just that.