by JohnDenver » Thu 12 Feb 2009, 08:55:42
$this->bbcode_second_pass_quote('IslandCrow', 'I')t also depends on where you spend the money saved. In my case, I replaced an oil furnace (oil coming from Russia) with a ground heat exchange (machine coming from Sweden), but using electricity generated in Finland. {Estimated pay back in 8-10 years - or less if I include the fact that the furnace was over 30 years old and needed replacing}. Now instead of most of the money going to Russia a chunk went to Sweden and the rest stays in Finland. Thus while my conserving may be a zero sum game on a world wide basis (within the first decade), it is clearly more beneficial to the national economy.
On a more localised scale, to suppliment the ground heat I have a wood burning stove in the kitchen (also good for when there are power cuts, and great for slow cooking the Christmas ham). Instead of the money going to a national electricity company, I buy wood from a local farmer (I don't have enough land to grow my own wood). So again while this may be a zero sum game on the national level, it clearly is of benefit to the local economy.
Good example. It is often said here at PO.com that oil conservation will crash the economy because our economic system is not designed for frugality. However, your example seems to be neutral with respect to the overall economy, even though you are structurally reducing oil demand. It's true that the Russian oil companies lose revenue, but that loss is balanced by your payments to the Swedish manufacturer, the Finnish electrical system, and your wood vendor neighbor. The flow of money changes, but the spending continues.
The question then is the degree to which your new system depends on oil. That is the claim of dohboi and TonyPrep -- that when you conserve oil and spend the money saved, your spending results in the consumption of as much oil as you saved.
The electricity used by your system has a very small dependence on oil since Finland generates less than 1% of its electricity from oil. Likewise, your ground heat pump was likely manufactured with very little oil, since most manufacturing processes are driven by electricity, gas and coal, and Sweden derives only about 1% of its electricity from oil. Transport of the system from Sweden to your home definitely consumed oil, but that was a one time event, and was probably very efficient. Certainly it didn't consume anything close to even one year's worth of heating oil for your home. Finally, there is the oil used by your farmer friend to harvest and transport your wood supply. That would seem to be the only significant source of oil consumption in your new setup. How much oil would you estimate is needed to cut and deliver your wood, compared to the amount of oil consumed by your previous furnace and the oil needed to get it to you from Russia? That is, how much has your overall oil demand been reduced?
More broadly, dohboi/Tony's claim depends very much on where you spend the money you save, as you said. If you reduce your oil consumption, and use the money buy something with very low oil intensity like an e-book, then oil consumption is greatly reduced. If you use the money to buy a flight to Tahiti, then oil consumption is reduced a lot less.