Hot Hot Hot!!!!

You know it has been over 100 degrees nearly every day for the past 2 months when you have not one but TWO $600 electric bills back to back. Oh My Gosh! Maybe we should have done more research before deciding to add an upstairs to our house. We doubled our electric bill! The funny thing is...it is always hot up there. To the point of being unbearable during the day. There has to be a solution. If you happen to have any ideas...please share!