by Sparaxis » Thu 21 Jul 2005, 23:59:40
$this->bbcode_second_pass_quote('nth', 'C')an economic growth continue without additional energy?
Absolutely not.
You have to start with the term "economic growth" and how we calculate it. Our measure of economic growth is called Gross Domestic Product, or GDP. It is a highly flawed measure, but we collectively value it as a "good thing" when it goes up.
GDP is calculated as C (Consumption) + I (Business Investment) + G (Government expenditures) + NX (net exports)
So, break them down. C is consumption. What can you consume that doesn't require energy to produce, transport, or undertake? Only by increasing energy consumption can there be more to consume. (Side note: things can be made or done more efficiently, but this in turn lowers the cost of the thing, and more of the thing are made or done, in turn increasing energy use [this is the classical Jevon's paradox]. At the same time, consuming electricity in lighting, for example, can be done more efficiently with CFLs, but the savings from these collective efficiency measures either results in more C--and more energy consumption--or put in a bank and results in more I [see below]).
I is Business Investment. Investment is typically undertaken with the idea of making a profit. Therefore it requires that there be more of whatever you invested in to do or make over time to create that profit. And everything you do or make requires more energy. (And remember, I is usually supported by credit/loans from banks that can create $10 from the $1 you so prudently put in there from your efficiency savings, thus generating $10 more of energy expenditures and wiping out your own personal efficiency savings).
G is Government expenditures. Our government is the single largest purchaser of most goods in our economy (from computers to vehicles). All of these need energy to produce. They pay wages to government employees that allow them to consume. They run the military, nuff said.
NX is net exports. If we export more than import, this goes up, and is "good". If we import more than export, this goes down, and is "bad". But since we generally cannot import or export haircuts or lawn services, trade tends to be more material, and all of that (from grain to garbage to scrap metal to everything else we export) all require energy. And to make GDP go up, we have to make more of this than we need to sell overseas, otherwise "economic growth" is hurt, so it needs even more energy.
So, if any of these components goes down, then "economic growth" goes down. And none of these components can go up without additional energy to support it.
GDP is a sucky measure to take to the post-peak world. For example, if a factory is built by a river and pollutes the river, the GDP goes up (business investment), and then if taxpayers pay more taxes to clean up the river, GDP goes up yet again (government expenditures). So does this actually increase our "wealth" and "well being"? Consider this too, if it's hot inside and you open a window to get outside air to cool off, this does not increase economic growth, although it increases your personal comfort. But if you keep the window shut and turn on the air conditioner, this increases economic growth. But is this the way to measure our personal well-being in an energy constrained world?
So, I guess my bottom line is asserting that the whole concept of "economic growth" is a problem in itself. The way it is defined absolutely requires that there be additional energy consumption for it to grow. It's a vicious cycle. I'm hopeful that a paradigm shift post-peak will also result in a paradigm shift in what we consider "good" in measuring for our metric of personal well-being.
The lady reading stories example as a non-energy component of economic growth is wrong. She needs energy herself--if this work gives her an income to buy food, that food requires energy. If this work gives her a profit and she saves it, it will go directly to the I component, thanks to our miracle of fractional reserve banking. If she does it for free, it still requires energy but won't show up in "economic growth" at all, given the way it is measured.
The "decoupling" you talk about is the change in energy intensity of economic growth. Before 1973, it was always assumed that 1% growth in GDP required 1% growth in energy consumption. Efficiency changed that. Even in China, which is highly inefficient compared to Japan or the US, they quadrupled GDP between 1980 and 2000 with only a doubling of energy use, or just 0.5% energy growth on 1% GDP growth. So the "elasticiity of demand" can fall, but it can't go negative. All efficiency does is raise the standard of living (i.e. allow to consume more energy services for the same amount of money) but it doesn't reduce energy use in the economy overall (that is, C savings from efficiency becomes C on other things, or else I, and thus more energy consumption).