Solar power has an average power factor of 0.33% in the USA. For every 1 Gw installed, on average, you'll only get 333 Mw out. Solar is the least efficient power source there is.
That's electrical efficiency, not financial one. Solar power has very low costs of maintenance. Installation is quite expensive, but we may be able to lower that further.
Hydroelectricity is the best kind: it's very efficient, cheap and more environment-neutral than burning anything (although far behind solar and wind). But not everyone has a river nearby and even if there is one, you need a ton of checks and permissions before you can build a power plant (even a tiny one).
#3 is more expensive than #1.
The model is sequential: I gave 4 steps, not 4 alternatives.
#4 is cheap because the inputs are cheap (natural gas, coal, wind, nuclear). See how small the black region is on the graph?
But the graph only includes power plants - not the whole energy produced!
You said yourself that if we included cars, fuel contribution would explode. Although you made a mistake by just using energy density. Car engines are notoriously inefficient (~40%).
If you replaced all cars with hybrids, you would already have that petrol-made electricity. Then you could just take out those engines and run them in the same room. Bang. You have an oil power plant. Not a very good one, since one huge "engine" would be better than millions of small ones. But... it's already more efficient than if we kept those engines in cars.
We're not adding anything to the system. We're just changing the place where oil burning happens.
Hybrids have been a market failure (
2% and falling). High cost, little benefit. Cheaper and better driving experience to stick with gasoline/or diesel.
That's a cultural thing. Hybrids and EVs are more popular on other continents. Europe and Asia are way more congested and densely populated. We also drive smaller cars in general and we value finesse (like: handling, interior quality, noise) over raw horsepower.
Hybrids' market share is in fact falling in many countries, but that's simply because EVs are taking over part of the market. Obviously, a hybrid owner is more likely to try an EV than someone used to petrol.
I don't know the particular US case, though. You guys are just falling back to petrol in general. This is not happening in other large markets.
BTW: you're posting old data. Hybrids and EVs are booming. We already have data for 2018Q2.
For the record, carbon dioxide is recycled by plants.
The question is: how much? Most CO2 processes in oceans, not by land plants!
Earth is a stable ecosystem. We're changing it by adding more CO2 sources, but we don't increase the amount of CO2 "consumers".
Anyway, the thing about EVs is not about how much petrol we consume and how much CO2 is made. As you can see, I proposed a model where not much changes in general (other than improved efficiency). It's about where it happens.
The real problem with cars is that they output CO2 exactly in the same place people use them, i.e. congested cities and so on.
And the higher density of people you have, the higher is the CO2 production. It's a total opposite of what we should want.
The idea behind EVs is that the CO2 production can be moved far from high density population.
Anyway, the topic was about AI and I prefer it over cultural difference and car ownership. Let's end it there.