Comment by asjo

My Netgear R6350 wifi access point running OpenWrt 21.02.03 and 5 GHz only uses ~4.5 W in casual use, and goes up to ~6.8 W when I run iperf3 full tilt through it.

Measured using a watt-o-meter like this: http://seacourse.dk/wiki/tiki-index.php?page=Home+Electricit...

They can be borrowed in libraries in Denmark, same as books.