24/7 home server

[taufanmft]

I have an old unused pc and I like to change it into a server. I think I'm gonna go with Ubuntu. But, I'm concern with the electric bill because it will likely run 24/7. can this increase my bill if I run it 24/7? If it does, what can I do to make it smaller?

Thanks!

Sorry for my bad english

 

[corroded]

set the timers for HDD sleep and wake on LAN...