Metric gas meter - confused

tirdanu

Hi.I`ve read a few threads on this subject but could someone explain - simply - if we are paying correctly please ?? Have checked our meter which has the M3 on it which I now know means it`s metric. On the bills it says

gas converted to kilowatt hours;
x 1.0226400 (volume conversion factor)
x 39.4867 (calorific value)
+ 3.6 (kilowatt hour conversion factor)

Is this right ?
x

Magentasue

Yes!

The number of kwh you've been charged for, should be roughly the meter units x11.

tirdanu

Thanks so much !

E.ON_Company_Representative

Hi

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.

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 reply.

Cardew

The simple answer is that if you have an Imperial gas meter(which you have) take the number of gas units and multiply by 31.5 and you will get the approx number of kWh.

So 100 gas units on an Imperial gas meter(measures in cubic feet*) is approx 3,150 kWh and 100 gas units on a metric gas meter(measures in cubic metres) is approx 1,120kWh.

* an Imperial gas unit is 100 cubic feet

E.ON_Company_Representative

Hi hambones48,

You’re definetly not being overcharged if your meter is an Imperial meter.

The additional 2.83 your bill is multiplying by is normal and is purely to convert the gas from cubic feet to cubic metres before continuing onwards to convert to kWh.

Brian