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Converting Meter Readings to kWh

posted by ChrisP | 4 months ago

How do I convert the readings from my meters into kWh please? I want to compare useage with my consumption from a previous supplier.

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posted by Davc | 4 months ago
Re: Converting Meter Readings to kWh

The electric meter reads in kwh units. The gas meter is usually in cubic meters, multiply by 11.2 to convert to kwh. If your meter is in cubic feet, 1 cu ft is 0.028 cu m.

posted by Hooloovoo | 4 months ago
Re: Converting Meter Readings to kWh
The calculation is detailed on your bill. But in summary:

For a metric meter reading in cubic metres:

(Cubic metres * Correction Factor * Calorific Value) / 3.6 = gas kWh

For an imperial meter reading in hundreds of cubic feet, the calculation is the same but also multiple by 2.83 to convert from hundreds of cubic feet to cubic metres.

The values for the correction factor and the calorific value are given on your bill.

posted by ChrisP | 4 months ago
Re: Converting Meter Readings to kWh

Thank you both

posted by OldGeorge | 4 months ago
Re: Converting Meter Readings to kWh

ChrisP,

Hope you understood.  But just to clarify, in case:

For an older imperial meter multiply the reading by 31.6.  For a metric meter, multiply by 11.2.

That will be near enough for comparisons.  The main factor that varies is the calorific value of the gas supplied and has to be in the range 38 to 41 megajoules per cubic metre,  In my recent experience it has varied between 39.2 and 39.7.

posted by Davc | 4 months ago
Re: Converting Meter Readings to kWh

Nice helpful summary George.

posted by ChrisP | 4 months ago
Re: Converting Meter Readings to kWh

Thank you. Exactly the info I needed.

posted by Hooloovoo | 4 months ago
Re: Converting Meter Readings to kWh

Please do mark a solution/answer as accepted if you're happy.

posted by ChrisP | 3 months ago
Re: Converting Meter Readings to kWh

If I could find a way to mark this thread as solved and close it I would. Is there a hidden button somewhere?

posted by JamieR | 3 months ago
Re: Converting Meter Readings to kWh

and why are the meter budget targets in £ and the data for previous usage /day /month all in kWh? not particularly smart. Not so difficult to convert but shouldn't have to..