Electric bill is over $600

Hey everyone, I’ve just moved to Chattanooga and moved into a four bedroom house with 4 other roommates, it’s two stories. We’ve just received our first electric bill for the full month and it was over $600 DOLLARS?? It’s an older house but I’ve never heard of $600 a month for electricity. We are all young and new to paying bills and cannot figure out why this has happened. We use EPB. Please if anyone can help it would be so appreciated.

EDIT: PROBLEM FOUND, our heat compressor was broken and caused our heating to go into an emergency mode. We are currently trying to fix it, thank you everyone for the help🙏🏼