For the foreseeable future it's mostly physics. The "all the time"-part is of course something that can be worked on even without changing the hardware. A simp

For the foreseeable future it's mostly physics. The "all the time"-part is of course something that can be worked on even without changing the hardware. A simple switch on the outlet to turn it off during the night or if everybody is at work/school and thus doesn't need it would reduce power consumption a lot already. "Fancier hardware" could also mean a timer for the outlet switch or a "smart home"-solution. This could mitigate connection time by turning the router back on before you arrive at home/wake-up. There's a lot of potential for not having to use 100W all the time without hardware changes.