It’s quite efficient, don’t worry about that. It’s just the high-end 12th-Gen Chips that take a lot of power.
This Builds looks like a good and balanced one overall.
But consider going with a lower Wattage PSU, unless if you’re planning to upgrade it with a very power hungry GPU or the like in the future. Maybe a high quality 400W Unit?
Having a PSU that fits your build will save much more power than going with a different CPU, since most of the time your system will likely use 50-100 Watts from what your parts look like.
Give this a try for a general idea of power usage: