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Can anybody tell me how much Co2 is produced in the U.k when one KW/h is used? I have found various threads on chatrooms but never anything official.
I am trying to work out the Co2 footprint of a lighting design I have recently completed for a customer.
it depends where that kw comes from
Yes it does and as I understand Uk mains power is made up of roughly 40% coal, 40% gas, 19% renewable (including nuclear) and 1% other.
I am mainly asking if there is a government document or method of calculating the Co2 used to generate 1 KW/h (I know it will be a rough figure only)
FYI it's kWh, no slash - the amount of energy is kW multiplied by the number of hours
Have you looked on the Carbon Trust website?
Try here:
France 83
Sweden 87
Canada 220
Austria 250
Belgium 335
European Union 353
Finland 399
Spain 408
Japan 483
Portugal 525
United Kingdom 580
Luxembourg 590
Germany 601
USA 613
Netherlands 652
Italy 667
Ireland 784
Greece 864
Denmark 881
(gCO2 per kWh of electricity)
Sweden and France generate a lot of Nuclear hence low figures for them.
Thanks Simon, always get a bit confused! I have had a look on the Carbon Trust website but there is so much information on there its hard to find what your looking for.
Didn't realise Denmark was so high. Good info.
Just rememember kW is an instantaneous figure, works for me.
The UK figure (I am told) although officially about 580g/CO2/kWh (electric)), is in reality closer to 680g/CO2/kWh. I cannot find the reference, but I am sure I have read it on GHA/AECB/GBC sites and WWF reports.
It depends what you want to use the figure for. For policy decisions (say regarding building renewables), you would use 0.43 kg CO2/ kW, because generally, you are displacing combined cycle gas turbines, which are cleaner than the overall mix figure. If you just want to know how much CO2 is produced for each kW electricity generated, the official DEFRA reporting figure is 0.537 kg CO2/ Kwh (long-term average).
Ask your provider to provide a certificate, for commercial supplies it's like a fridge sticker with A-G ratings and Co2 figure. Public buildings are obliged by law to display the energy rating where they can be viewed.
