Noticed by who? Unlikely a $100, $500, or even $1000 difference at an apartment would be an issue, as long as the bill is paid. Running 1000w hps, fans, even a/c, my bill is just $123.
Last year this time, doing nothing, it was about $60.
No one is gonna say anything, or care about electric bill unless meter is bypassed
Bigger issue in apartments is smell and noise. Hell, when I was moving in to a spot once, my neighbor had a bag of Promix outside his front door. We all know no one is growing house plants with Promix. Stuff like that gets folks popped, not $200 electric bills