Well, I think the whole point of “we need another Saudi Arabia every x years” is because consumption was continuing apace while discoveries were not. But that trend didn’t continue- very large, recoverable discoveries have been made. I agree, they are harder to work with, have a higher EROEI and may not be produceable at as rapid a rate as some would like. OTOH, production isn’t going to just hit a wall because of absence of resources as the worst-case Peak Oil scenarios suggest. Oil gets more expensive, probably dirtier and less worth it, but remains available.
A few points here. Solar first. The energy return of solar isn’t a single figure- it varies quite a bit according to what system you are using. For example, there has been a big boom in rooftop solar installations in the US and other places recently. The majority of these installations use cheap Chinese panels with a conversion efficiency of 15.6%. That isn’t bad, but the best commercially available panels right now are (I think) 24.5% efficient, and the next couple of iterations of improvement are already in the pipeline such that we can expect 26+% within a few years without any new discoveries or breakthroughs. Production of these modern, high-end panels is currently limited. If we get out of the way of or even support the industry, these will become more common and we’ll see a revolution in solar on top of the revolution we’re witnessing already.
EROEI for solar panels are hard to find, and again, it isn’t one thing. For the top panels it is something like 30-40x, and again, it is improving all the time. I don’t know if it will solve all our problems, but solar is really going to be big.
As for the energy requirements of the middle class, well, something has to give. If a middle class lifestyle isn’t possible, people just won’t get it. Besides that, middle class around the world isn’t going to mean a house in the suburbs with a garage, a driveway and a big Chevy with fins on it in the driveway. New middle classes are going to be more sensible from a consumption point of view IMHO.
So maybe oil will cost too much and the price will rise such that people don’t consume more than what can be produced. I see economic trouble and continuing environmental consequences attached to our oil situation. What do you see happening?