I just discovered that keeping my router plugged in it cost from 17$-20$ a month. I know that is not a lot of cash but for me it is a little odd.
I'm a snowbird and live in Pittsburgh 6 months and Tampa 6 months. I forgot to unplug my internet/tv electric connections for 2 months and the bill was different both times. By accident my brother went to my place and unplugged my internet/tv stuff. The difference is what I have posted above.
QIP2500 draws 40 watts MI424WR draws around 10 watts, maybe a little more ONT PSU draws 20 watts
based on meaurements of my equipment installed in 2006.
Say 70 watts * 24 hours * 30 days = 50400 watt-hours = 50 KWH per month 50 KWH * $0.18 (approximate rate in my area) = $9.00 per month
Your power consumed is probably similar for each item I've listed, even newer equipment. The variables would be total number of STBs and electrical rate.