WOW just got the electricity bill!

I agree with everyone. My tanks got blamed for the jump in the electricity bill, so I paid up. BUT, when my grandmother moved out, the bill dropped by half! Ha, the tanks are still running and the bill has stayed low. We get free water where I live :D thankfully.
 
120 dollars difference is a bit high for just one tank. When all my fish tanks were still set up, my monthly total energy bill was around 160 dollars.

but, this included some failry big tanks (720g, 80g, 150g, etc.)
 
Electrical consumption can vary widely. You could have an unheated tank with a 20W light over it and 20W for the filter. This basically will not even change your bill over its standard deviation. But if your setting up something larger, like say a 240G with a couple big return pumps, 500W or more of lighting, over 1,000W of heat to keep it about 10-12*F over ambient (80* in a 66-68* room), then it might impact the bill a bit. I close to doubled my bill from being super conservative to now having 2 computers running 24/7 and 4 tanks (largest being 75g). Will be putting in a 240 and 150 soon though. Water bill will probably go up by as much or more so than electric I beleive. Water (and sewage) isnt cheap here. FWIW I think electric hot water heaters are one of the biggest consumers of electricity in your house, my folks just replaced their electric one for a fuel oil one and their e-bill was cut in half.
 
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