Imperial v Metric gas meter

hambones48

I read this reply on a post dated 05-02-09 'If you meter is metric it will measure gas in cubic metres and have 5 digits in the meter reading before any decimal points.
The calculation on you bill is correct, but to reiterate it’s below.
Multiply by 1.0226400 – the conversion factor
Multiply the number of units by the calorific value of around 39.4 - this does change from bill to bill but not a great deal, it basically depends on the quality of the gas.
Then divide by 3.6
You’re then left with the number of kWh used and to be billed for.

On my gas bill from Scottish Power it says if you have an imperial meter(which I have), multiply by 2.83. Now multiply by the calorific value (39.9) and correction factor (1.022640) then divide by 3.6 to give the number of kilowatt hours.

It looks like I am being asked to multiply by 2.83 more than your equation. Am I being charged too much? I would appreciate your replies.

Geoffo_M

If your meter is imperial then units should be multiplied by 2.83 on your bill. If your meter is metric, it will not. In both cases you have to also multiply by 39.3 then 1.02264 & divide by 3.6 to give kilowatt hours

hambones48

Many thanks, I really thought I was being charged too much but obviously I'm not.

Cardew

As the calorific value can vary, the quick way to obtain kWh is multiply a metric gas unit by 11.2 and an Imperial gas unit by 31.5.