At 09:15 02/08/2017, Kornbrot, Diana wrote:
>Hi John, Good point. The method of electricity generation must
>matter. Same for electric cars! ..... I did exaggerate a bit, ratio
>is 91.38 = 2.4. Still not negligible ... assume that they use
>average footprint/kwt,hr for national grid
Thanks. As you say, I can but presume that the figures you quote are
based on the current mix of electricity generation methods.
I am not convinced that it would necessarily be wise to encourage
people to switch to gas ovens (which I think are currently
pretty 'unpopular'). Give the infrequency with which people change
their ovens, it would take a long time (probably decades) for such
encouragement to have a substantial effect on the proportion of gas
ovens and within that time scale one would hope that we would have
seen appreciable further movements in the 'green' direction in
electricity generation - the benefit of gas ovens will therefore
presumably decrease, maybe eventually to the point of becoming 'negative' ...
... one needs to remember that there is potential for the carbon
footprint of electricity generation to eventually become very low
(primarily by removing fossil fuels from the equation). On the other
hand, gas ovens (at least, as we currently know them) will presumably
continue to discharge the same amounts of products of combustion into
the atmosphere. One might therefore expect that the environmental
benefits of electric ovens will progressively decrease, and might
even become 'negative' eventually.
... and, of course, unless we start synthesising it (which seems
unlikely, albeit not impossible), the gas will eventually run out
(with, in the meantime, concerns about the possible environmental
effects of increasingly desperate methods of extracting it).
Kind Regards,
John
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