The lesson perhaps is that regions and individuals should do their best to disconnect their energy usage from the global fossil-fuel supply chain while it still exists, and develop new energy networks that are entirely in-region. I wonder if California's push to "go green" isn't really to benefit the planet, but to benefit California when the system collapses. It's just an easier sell to say "We're saving the planet" rather than "The planet is fucked, we're doing our best to ensure we survive when everybody else dies."
Edit: Looks like the paper covers this, and counter-intuitively, most supply-shocks do not have far-reaching impacts to the global supply. There are a few exceptions of strongly-connected nodes: most crude oil ones seem to be in Southeast Asia (affecting Japan/Taiwan/Australia) as well as Port Said, Egypt (Suez Canal), while the biggest natural gas impacts come from facilities in the Midwest (primarily affecting the U.S. East Coast). Their data does not include Russia, so it can't model things like the Russia/Ukraine war.
Thanks. Yes, I find that counterintuitive too. But note that in the publicly released data and model, the authors make highly simplifying assumptions about the limits of supply sources and edge capacities -- see lines 202-208 of the paper. In the real world, sources have limits at which you just can't get more flow at any cost, and edges have limits at which you can't transport more flow at any cost. I wonder how the responses to supply shocks would look if subject to hard limits on supply sources and edge capacities.
It seems valuable to simulate all international trade, asset markets, supply and demand, employment, etc. to make predictions. It could also lead to better ideas to prevent or quell recessions by focusing attention on the correct levers.
Do we end up needing to simulate the whole world? Because, ultimately these systems are in fact one, and not separate at all.
Well, if we use less gasoline, but we still want asphalt, the answer is to stop cracking, or at least to not crack as much. And the refineries would be happy to do so, since cracking is expensive.
I mean, you could get to a point where, if you just take the natural fractions in petroleum, there still isn't enough asphalt, but that's not going to happen for a while. (If ever. I suspect - but I do not know - that petrochemicals don't primarily want the tar/bitumen/asphalt fraction.)
The likelihood and timeframe of that future is a separate issue, and I'm not holding my breath. Even if Europe really does ban new ICEs in the the 2030s, there's a long tail to to it.
We should probably increase the national supply and use that to smooth the kinks.
And it pains me a diehard environmentalist, but we should probably subsidize the shale/fracking oil industry in North Dakota and other places to ease the transition as well.
If there is a sudden large shortage wouldn’t that cause prices to spike? Could that be what we’re seeing today ?
Use that to determine that shipping costs across will go up and will affect the margins of retail during peak import seasons (like holiday prepping) and how that will affect their revenue predictions and ultimately stock value...
The authors simulate a network of ~6 million real-world assets used for extracting/processing/using fossil fuels, interconnected by ~16 million ground/maritime transportation flows. The simulations match actual fossil fuel flows at every location. The data and code have been open-sourced.
The authors use the simulation to ask questions such as, "what happens if demand for fossil fuels declines gradually, say, due to a transition to green energy technologies, causing the least profitable fossil-fuel assets to shut down?"
The answer to that particular question is counterintuitive: A gradual reduction in demand for fossil fuels can lead to sudden large shortages and supply-chain backlogs in many parts of the world.
Think of it this way: if enough "seemingly unimportant" assets go offline, all their connections (flows) go offline too, and the remainder of the network's assets and connections (flows) suddenly lack the capacity to get fossil fuel to all the places it needs to go.
I've added the paper to my reading list; I want to read it more carefully.