Does my dog care if the lights are on or not?

For background, my dog’s crate is in the laundry room which has no windows. He is crated while me and my partner are at work, but with the way our schedules overlap, he is only ever in there for about 4-5 hours max. He’s 2 but has been crate trained since he was a pup, and seems to like to hang out in there, even if it’s just with the door open while we are home. I’ve been leaving the light on for him because I know if I were in there all day, I would want the lights on. I leave the door open too, so there is a bit of natural light coming in,but it’s still quite dark. I’m just wondering, does that actually make him more comfortable or am I just racking up my electric bill? Maybe a night light would be a better option? Or maybe I’m just falsely assigning him human feelings lol. TIA! 😅