This post is mostly meant for the cornucopians. I have been hearing about alternative energy technologies for a long time now, but I have to wonder if they can be implemented without lowering the standard of living for the first world.
I believe that none of these technologies can provide access to greater total amounts of energy and a lifestyle of increased access to energy for the middle class of first world countries. Here are the basic challenges to alternative energy.
While I do not consider myself a Cornucopian, I will try to honestly answer the questions you have posed.
1) Depletion of hydrocarbons. In order to give the middle class greater access to energy, alternative energy has to not only make up for depletion, but also steadily increase the total energy production.
Yes. That is an accurate assessment of the picture, and there is no single "magic bullet" solution. There are, however, a number of partial solutions that are all quite viable, and several REALLY strong options that aren't quite viable yet, but will become so as the price of oil continues to move higher. While you are quite right that there is no single solution that will provide the answer, there are a number of approaches that, when taken together, can provide more than enough energy to meet global demand (especially if conservation and increased standards are built into the equation, as they must be in the years ahead).
If the world is going to divert resources to fund massive wind, solar, or coal liquification projects, then energy prices will go up for a number of years or even decades while these projects are being developed. Energy prices will go up, and the common man will not be able to afford as much energy. We are already seeing this, even without the massive energy projects that are going to replace oil.
The world will not fund such projects, at least, not on any wide spread scale. What will happen here will be a purely economic function. There are, and will be subsidies to jumpstart the production of alternate energy sources, but the real magic happens when oil prices rise high enough to make production of power (fuel/electricity) through other means a good investment....when that happens, expect to see a lot of smart people who are savvy with their money, invest heavily in the technology to make it happen.
Some will get burned.
Some will get buried.
Some will hit the jackpot and will be at the helm, ushering in a new era of prosperity.
In any case, your point is a valid one, and it is sadly true that the increasing prices will be felt by those at the bottom first and hardest. One way to mitigate that impact is education and conservation, but even that can only take you so far.
2) Physical constraints. A number of alternative energies have certain constraints on how they can be applied. Windmills are only effective on a fraction of the world. Same with solar. Hydrogen is limited by its difficulty in storage and the fact that fuel cells require platinum, a rare and valuable metal. Biofuels are limited by arable land. Add these limitations, and I do not see how alternative energies are going to improve the quality of life for the middle class.
They will each play their part, although some regions will be better off than others (being blessed with more energy abundance). Nonetheless, every region has *something* that they can use...perhaps not enough to sustain population levels at where they are now, which will prompt some level of relocation. I do not see it (energy shortages) causing massive die-offs or an economic meltdown that the diehard doomers talk about.
That's a worst-case scenario based on an incomplete understanding of the facts as we know them, and combined with a total lack of understanding of economics.
Stir well and let simmer for a while, then serve up as much fear as your readers can stand.
It's interesting reading, but ultimately, rather melodramatic and overblown.
The important thing to remember is that while nothing has an EROEI comparable to oil, there are good alternatives out there, and two things will serve to improve them: 1) as oil prices increase, the incentive to find an alternative increases (and several options that were prohibitively expensive become fashionable as oil prices continue to rise), and 2) continued experimentation, scaling up, and economies of scale will improve existing technologies and make them more viable than they currently are.
3) Population Growth. The population of the world has been growing steadily since the beginning of the industrial age. Our economy depends on population growth, and energy growth. Remember that energy is limited, and the more people you put on the planet, the less energy is available to everyone. Everyone's piece of the pie gets smaller.
In order to increase the lifestyle of everyone, enough energy has to be produced to make those pie pieces bigger for everyone. Since population growth is necessary for the economy, the alternatives have to continue growing over time in order to keep growing the pie pieces.
Alternative energy will have to continue to increase indefinitely to support an economy based on the assumption of unlimited population growth, unlimited energy growth, and unlimited increases to energy lifestyle.
Economics does not need infinite population or energy growth for its survival. It might shock you to know this, but during the dot com boom of the 90's, the supply of gas actually shrank.
According to doomer mythology, any contraction of the gas supply is supposed to cause immediate social, political, and economic collapse.
In fact, we've already been down that road twice. In the 70's we experienced a minor bout of stagflation, and in the 90's, we bounded ahead with one of the strongest periods of growth in our history.
The only thing that Peak Oil absolutely mandates is that the need to find viable alternatives becomes more pronounced, and, as oil prices rise, finding those viable alternatives and putting them into play becomes more profitable.
Furthermore, most studies show global population topping out by ~2050 or thereabouts, and then, beginning a decline. It's been a while since we've had a Pandemic of any kind, and we're overdue for one, so this number may be modified in the downward direction at any time (Bird Flu, for example), and if not, then we humans can always be relied on to kill plenty of our own, and barring that, there's always AIDS and other nasty diseases to cull the herd....this should provide enough death and misery to keep all but the diehard doomers happy, and in the meantime, one way or another, global population is gonna predictably level off.
In summary, alternative energy will have to offset hydrocarbon depletion, work around physical constraints, and continue an increasing curve forever in order to support a population and economy based on growth. The moral of the story is this... No matter how effective the alternative energies are, they can't keep increasing the size of the pie pieces forever. The challenges are too great, the demands too high, and it cannot continue forever.
Whatever happens, expect less access to energy for everyone.
I disagree with your conclusion, but of course, you are free to hold whatever position you wish.
-=Vel=-