by JohnDenver » Wed 09 Jan 2008, 12:47:36
$this->bbcode_second_pass_quote('Drake', 'H')mm, I guess it all boils down to what you define as maintaining functionality and the actual available timescale. Does it f.e. mean maintaining the current standard of living in europe or north america (including the big cars etc.) and an average world gdp growth of some 2 percent, some 10 percent in india and china and a world population growth of 1.X percent?
This would obviously make the overall scale much larger than it would be if we defined some other criteria for functionality, including f.e. drops in the living standards (and scooters would fall into that category f.e.).
The world consumes roughly the energy equivalent of 107 million GWh a year at present rates. Let's say 1/3 of it is based on oil, that makes ~35 million GWh a year. Should that oil part start dropping by 3% this would roughly equate to about 1 million GWh which would have to be "replaced" each year (during the first decade). This burden will not be shared equally, I assume the surplus oil producers won't carry any of it (which will hopefully haunt them later). 1 Million GWh equals 114 1 Gigawatt powerplants to be built each year worldwide. That's pretty much. Let's say the US uses about 20 %, so they'd have to make up for some 23 1 Gigawatt plants each year. There will be significant losses in efficiency depending on the actual application but the actual "size" of the problem can imho be evaluated by this calculation.
Hi Drake, welcome to the thread.
The full statement looks like this:
The Issue of Scale: Humans will not be able to replace fossil fuels for all of their uses, on scales that maintain functionality*, on a timescale that mitigates the impact of fossil fuel declines, while providing the low-level of environmental protection actually demanded by the electorate.
*) "Maintain functionality": Getting the job done by different means, while using less energy. Very likely to entail a change in lifestyle and a deviation from business-as-usual. Example: A person who used to commute but now telecommutes is said to "maintain the functionality" of gasoline, without the gasoline.
The "maintain functionality" term was introduced to eliminate the need to maintain the current "standard of living" in US/Europe etc. In terms of personal transport, anything which gets the person from point A to B is fair game.
This is the list of options I've got so far:
Conservation = Walking + Bikes + Mopeds + Scooters + Motorcycles + Electric bicycles + Carpooling + Telecommuting + Riding the bus + Riding the tram/train/subway + Moving nearer to work + Sleeping at/near work + NGVs + Small EVs + Full-size EVs + PHEVs + Hybrids + Light/High-efficiency conventional vehicles + Electric trucks + Converting oil-fired generation to gas/coal/nuclear + Lowering speed limits etc.
I got a start on a calculation like yours in the earlier thread:
http://www.peakoil.com/fortopic35185-0-asc-90.html
It would be great if we could all work off the same spreadsheet for primary energy, so we don't have to keep switching units etc.
I'm using EIA "Table 2.9: World Production of Primary Energy by Energy Type and Selected Country Groups (Quadrillion Btu), 1980-2005" located
here.