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97 comments on Andris Piebalgs' Blog
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97 comments on Andris Piebalgs' Blog
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Practical and Rainsong - I believe Chris Vernon once reported that the official UK position was that UK electricity supply would have to grow by 20% to accommodate a total electrification of transportation (I'm not 100% sure of my facts here).
You are right that burning coal in old generating plant at 30% efficiency and using that electricity in transportation makes little sense.
My current thinking is that all this old inefficient plant has to be shut in favor of multi fuel combined heat and power systems that are 90% efficient - using coal base load topped up with urban waste and bio mass.
This is not crazy because I believe the Danes have already done this.
http://en.wikipedia.org/wiki/Cogeneration
http://www.ambottawa.um.dk/NR/rdonlyres/C3F9F1D4-BEA9-4C29-A1FD-1D7CC861...
This system will produce 1/3 the CO2 and 3 times the power / energy for the same FF input.
We obviously cannot switch to electrical transportation - but at some point it is absolutely inevitable that we need to start phasing it in.
There is an order of magnitude difference in the electrical demands. depending upon the route taken for "Electrification of Transportation".
The Tube in London is not a major part of the electrical demand of London (certainly not even 10%, doubtful if 1%) but it is a major part of transportation in London.
High enough efficiency of electrified transportation is, in contradiction of practicals dictum, sustainable (if the rest of society can become sustainable).
Best Hopes for High Efficiency Electrified Transportation,
Alan
London Underground electricity consumption:
- no. 1 electricity consumer in the London area
- consumption c. 1.1 TWh p.a.
- accounts for c. 3.5% of the electricity consumed in City of London
Climate/energy performance per service unit:
- CO2 emissions/passenger kilometre: 68.9 g/km
- CO2 emissions avg. 0.47kg/passenger journey
- c. 150 Wh/passenger km
-
Ref:
http://www.tfl.gov.uk/assets/downloads/environmental-report-2007.pdf
http://www.tfl.gov.uk/assets/downloads/environmental-report-2006.pdf
http://findarticles.com/p/articles/mi_m0BQQ/is_10_44/ai_n6257715
accounts for c. 3.5% of the electricity consumed in City of London
I think that should be "in Greater London". Technically the City of London is a tiny bit in the very centre of London, with only 10,000 residents, as opposed to the 7.5 million living in Greater London.
No. City of London.
Not London Metropolitan Area.
I think the problem may be if people charge their vehicles on mass when they get home from work. The peak load would be immense. A break in a major tv programme has brought the grid close to collapse when all the kettles are swiched on at once. The system has evolved with London underground electrification in place and can therefore cope.
That's why you give the utility control over the vehicle chargers, and let people specify if they want to pay the basic rate to have the car recharged just enough to get to work by morning, a higher rate to have it fully charged by morning, or premium price to have it fully charged ASAP.