Working out annual consumption - am i right?

johanne

Can someone please tell me if my annual consumption figures are right from my working out below?

I think they look about right.. but not 100% sure

Gas


09 Apr 2008 - METER READING 5404
13 Apr 2007 - METER READING 4387

Total gas units used: 1017
Converting to KWH = 32, 089 KWH

AVG consumption = (32,089/361 days)*365 = 32,444 KWH a year

Electric

10th Apr 2008 - METER READING 12344
8th May 2007 - METER READING 10082

Total electric units used: 2262 KWH

AVG consumption = (2262/337 days)*365 = 2449 KWH a year

mute_posting

at 3p per kwh that would be a little over £900 / year

This may help...

CONVERSION TO KILOWATT HOURS

Electricity units are usually already stated in kilowatt-hours, so the electricity kWh's figure is ready to use.

Gas units need to be multiplied by 31.3 to convert from the units used according to the meter, to kilowatt-hours. Then the gas kWh's are ready to use. This is a rough estimate and the exact conversion details are below. (Or, for rough figures, multiply by 100, then divide by 3).
(To convert gas units to kilowatt hours: gas units used x imperial to metric conversion factor (2.83) x volume conversion factor (1.022640) x calorific value (39.7) divided by kilowatt hour conversion factor (3.6) = kilowatt hours used.)(This is the same as: gas units used x 31.3 = kilowatt hours used)
If you have a metric meter, you do not need to use the imperial to metric conversion factor (2.83). In this case, the rough estimate is to multiply the metric units by 11 instead of 31.3

MP

espresso

mute_posting wrote:

Not sure about the gas one - at 3p per kwh that would be over £9k per year?

£973 surely!

johanne wrote:

Can someone please tell me if my annual consumption figures are right from my working out below?

I think they look about right.. but not 100% sure

Gas


09 Apr 2008 - METER READING 5404
13 Apr 2007 - METER READING 4387

Total gas units used: 1017

Based on your lower than average electricity usage, you gas meter may be a metric meter i.e. 11,556 kWhs

mute_posting

espresso wrote: »

£973 surely!

Oops!

At work and my "0" key on the numeric keypad is a bit dicky - I should have noticed it really (multiplying by .3 and not .03)

I was thinking the same thing regarding a possible metric meter

Soory OP - Didn't mean to alarm you!

MP

johanne

Just checked and the meter says "m3" so is cubic meters.

So ive used 11,000ish is more realistic then?!

Was just trying to work it out as my DD has just gone up to £38 from the £20 a month ive been paying for last 12 months... new amount would cover me for annual cost of £456

Since 19th July 2007 (cant get access to my bills online before that) to 9th April which is 263 days by my reckoning....... ive used £285.81 worth of gas apparently..... so roughly working out roughly - probably over estimating (cos of winter/summer periods etc) its (£285.81/263 days)* 365 ... so £396.65 a year...

Add a rough 20% to allow for the price rises and thats £475.98 so about right then

Sorry if thats confusing or wrong in anyway.... i have pregnancy brain (6 days overdue..!!) and keep getting things muddled!