I leave my computer on at night so I can do a complete scan every day... I do this because of the amount of files I have, it takes the computer forever to get through it.

If you had a setting where it would start a scan automatically when I shut down the computer it would save power. You'd be the first Anti-Virus company to go green!

Why don't you just set it to shut down after the scan completes, or am I missing something?

Green is only having the computer on while you're using it (hence, scanning while using).

Rudger's suggestion is an alternative