Airtricity Level Payment Plan - how is this calculated?

I signed up several weeks ago for Airtricity and was happy to do so. They were offering 13% cheaper than ESB and would match any further cuts by ESB (which came to 10% shortly afterwards). Today I received details from Airtricity of a direct debit of €121.37 each month.

I have checked my bills for the last 12 months and they came to a total of €1535 which divided by 12 would be €128 and when I back out the 13% plus the ESB 10% cut that should bring the same useage down to €96 per month.

Just wondering if anyone has signed up for Airtricity and if there were any similar experiences?

Roger

The 13% saving is on the metered usage only. The daily rate of standing charges remain the same.