Calculating Gas Costs - EDF

Woggle

I'm currently with EDF and trying to work out how they've calculated my gas usage.

I'm on energy online v6 with rates as follows:

Electricity
First 225 kwh: 14.87p
All other Units 8.23p

Gas
First 670 kwh: 7.191p
All other units 2.915p

Electricity bill seems fine. However, the gas seems a little more confusing. The instructions are as follows:

- First we take the previous meter reading away from the present meter reading.
- Then we multiply the result by the temperature and pressure Conversion Factor
- Then if your meter does not measure in cubic metres, we multiply this figure by 2.83 to convert it to cubic metres.
- We then multiply the number of cubic metres by the current calorific value.
- Next we divide the answer by 3.6 to convert into kilowatt (kWh).
- Finally to work out the cost of gas you have used we multiply this figure by the Tariff rate.

Therefore I have used part of my gas bill and gone through this as follows:

- Previous meter reading (11540) minus present reading (11425) = 115
- Multiply 115 by the conversion factor (in my case 1.022640) = 117.6036
- If meter doesn't measure in cubic metres multiply by 2.83 = N/A as it measures in metric
- Multiply 117.6036 by calorific value (39.60000) = 4657.10256
- Divide 4657.10256 by 3.6 = 1293.6396 to give KWh

However, for the same period the bill says that the KWh is 257

Any ideas where I might be going wrong?

On another note, is the EDF online v5 a newer package than v6? I've gone through a few comparison sites and it appears I could make a bit of a saving with v6.

Many thanks

penrhyn

Multiply metric gas units by 11 and you will get a rough conversion, so you are correct in your calculations.

Better have a closer look at your bill.