What are you using as a rate per kW?
on my bills, the electric company gives you a certain amount of power at the lowest price, then it tiers from there.
http://www.pacificpower.net/bus/ayu/uyec.html
I just removed all the taxes and fees off the bill and compared June to July.
My savings was undetectable. If there was any, it was less than 4 dollars but I wrote this off that July is considerably brighter where I live.