We all know that one day the oil and coal will run out. This is often described as the peak oil theory and it was first proposed by M. King Hubbert in 1956.
Whether you recognize it or not, our modern cities are built around the existence of oil, the primary influence being cars.
Fast moving automobiles means that modern cities can be large and spread out. Roads are wide and stores are often long distances from the buildings where people live.
When the oil and coal runs out and fossil fuel powered cars go the way of the dinosaurs then how will cities cope?
This post explores some technological responses to this future issue.
Electric Powered Vehicles
The most popular proposed technological solution to this technical conundrum is electric powered vehicles and the most famous company for this is Tesla.
The cars are still expensive, their ranges are still limited and their charging times are still long but the technology is undergoing rapid development and improvements on each of these issues are being made each year.
Another option for electric powered vehicles is inductive power transfer technology from embedded equipment in the road itself to the car as it drives along.
An older and well-proven technology is direct contact power transfer from overhead wires to a power pole on the vehicle although this is more commonly seen in mass transit buses and streetcars which I will discuss later in this post.
Biofuels
Batteries seem to be the preferred technology for a post oil world but carbon based liquid fuels still can't be beat for energy density and safety of handling.
Fossil fuels were created in the carboniferous era in which wood bearing life was abundant but microbial species did not yet exist to break down this type of dead plant matter. This meant that vast quantities of dead plant matter built up over time, got buried, and then slowly converted into the fossil fuels we use today.
When the oil runs out we can replicate this kind of process with oil-rich algae or bio-engineered bacteria. Algae-based fuels are promising and have the potential for generating large amounts of useful fuel on a per acre basis. Although there are still some technological issues with this method of producing fuel none of them seem to be insurmountable given enough attention and funds.
The day may come when countries with access to abundant non-arable land, solar irradiance and water may become the Saudi Arabia's of tomorrow. Places like Spain, Australia, Algeria, Libya, Mexico and Texas could become the algae based liquid fuel production superpowers of the future.
Electric Powered Mass Transit
When the oil runs out and if biofuels are not plentiful or they are too expensive for the average consumer then cities may have to electrify their streets and freeways and build out a massive public transit system. This technology is well known and is already used in many cities around the world.
Electric powered buses and streetcars with power poles contacting overhead electric power lines would be a relatively cheap and quick way to keep our large cities from coming to a standstill.
Overhead gondola cars may also become a popular form of mass transit. These are usually seen only on ski slopes carrying people from the base of the mountain up to the peak but they have been adapted for use on a horizontal plan to carry people around their city.
The benefits of gondolas is that they don't interfere much with the ground infrastructure and they can be run on electricity.
Image credit:futureatlas.com link CC BY 2.0 license
City Re-Design
The current urban planning model for modern cities is to make them large, to give as many people as possible a single unit dwelling on a largish plot of land and to zone different economic activities in different areas of the city.
A post oil city will need to be retrofitted to make cities more walkable so that vehicles won't have to be used in the first place. Living densities will need to increase significantly and the era of the suburbs will most likely be over.
Homes, offices, stores and maybe even factories will all have to become closer to each other. Dangerous factories will still need to be kept separate and the workers will need to get to these by mass transit.
Rationing of Fuel
If the biofuel project doesn't manage to make liquid fuels cheap and if the electric vehicle project doesn't manage to make battery powered vehicles useful then rationing of the limited liquid biofuels will be needed.
Liquid fuels may therefore become unavailable to the general public and will only be used for priority transportation such as:
- police and emergency vehicles,
- military vehicles,
- food production (tractors etc.),
- food transportation (trucks and boats),
- intercity cargo trains, and
- intercity passenger trains.
If you like hopping into your vehicle and driving to a store across the city on a whim then you may be out of luck in the future.
Electric Power Grid
When the fossil fuels (coal, oil, natural gas) run out, humanity will be left with hydroelectric power, wind power, solar electric power, tidal power and fission power. If we are lucky, fusion power may be an economically viable option before all the coal and natural gas are gone.
Currently, the electric grid does not power much of the transportation sector so a massive build out will be needed to keep modern economies running. This will likely have to be done at a time when an economic recession or even an economic depression is occurring and so will require enormous political will power.
Sea-Going Transportation
Liquid fuels may be rationed to critical uses only so a lot of sea going cargo transport in the future will once again have to rely on wind power. Solar electric power panels may also line the decks of cargo ships to provide an additional speed boost to these boats.
A number of new technologies are being considered from combining solar panels with sails to having large computer-controlled sky sails pulling ships along across the oceans.
Whatever technology eventually wins out the era of a slow boat to China may eventually return (slow boat to America, slow boat to Europe, you get the idea).
Bye-bye Aviation Industry?
When passenger air travel first got started only the very rich could afford a ticket. These days air travel is currently very inexpensive and nearly everybody can afford to fly.
When the oil runs out and if biofuels are expensive then the era of the large aviation industry may end. Air travel will still exist but it could once again be reserved to only the very rich. Travel by bus, train and boat may once again become the norm for us normies.
A Soft Landing?
The conventional oil sources will run out first leaving unconventional sources like Canada's oil sands and Venezuala's oil sands as the critical bridge to a post oil future.
These are both huge deposits and a massive build-out of nuclear plants to power the oil sand refinement facilities might have to be the medium term technological solution to keep society running until the alternative technologies are developed and made economical.
Closing Words
When the fossil fuels run out, our advanced technological society will likely be able to survive however it seems that large changes in our living arrangements and transportation habit will be needed.
The era of personal transportation will be over, cities will become more dense and more walkable, many forms of electric powered vehicles will become the norm, liquid fuel powered vehicles might be limited to critical uses only.
The post oil era won't be a disaster but it will definitely be a big change.
Thank you for reading my post.
Post Sources
https://en.wikipedia.org/wiki/Peak_oil
https://en.wikipedia.org/wiki/Hubbert_peak_theory
https://en.wikipedia.org/wiki/M._King_Hubbert
https://en.wikipedia.org/wiki/Diesel_fuel
https://en.wikipedia.org/wiki/Biofuel
https://en.wikipedia.org/wiki/Carboniferous
https://en.wikipedia.org/wiki/Electric_car
https://www.marineinsight.com/green-shipping/top-7-green-ship-concepts-using-wind-energy/
We also need to factor in the result that if we really burn all of the fossil fuels there will be dramatic global changes, such as a 160 to 200 foot rise in sea level that would wipe out many major cities ref. We seem well on our way to doing that. We may need to turn to nuclear power in addition to clean energy sources like solar and wind. Obviously nuclear is controversial, but the world is not going to go back to resource constrained energy living when such a source is readily available to harness. Also, if we do deplete oil we need to consider the impact on all of the products are made from it.
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Maybe (re: massive sea level rises). Global change has and always will happen in the Earth System. Perhaps huge influxes of GHG (green house gases) and rapid changes alter the Earth system in ways we do not yet fully understand.
Extreme melting in Greenland, from anthropogenic GHG, leads to huge increases of cold fresh water into the north Atlantic, deflecting and slowing down the Gulf Stream. This cools Europe and more precipitation falls as snow, this causes glaciers to grow. These reflect more energy from the sun and then we start to actually cool.
Re: clean energy, please see my note below (re: externalities). We need to account for all costs in order to determine what is, or is not clean. Cheap wages? Mining regions in developing countries that do not pay a living wage, cutting virgin rainforests to get access to minerals to build those solar panels or those battery banks. Just how clean is it really? Food for thought.
In addition, RE: Nuclear. Until there is a good, "safe" (free from floods, earthquakes, etc) place where the wastes from nuclear can be stored, for at least 25,000 years (the half life of Plutonium-239), we should be careful about generating more.
Where were we 25,000 years ago? Living in caves? What legacy are we leaving the future with waste that kills everything for 25,000 years? I don't have a good solution except caution and clear, level-headed thinking by teams of independent scientists
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PS. Here is my formal reply and follow on after getting inspired from this cool post here. Thanks for the inspiration:
https://steemit.com/steemstem/@snowyknight/the-real-costs-of-clean-energy-and-technology-part-1-my-battery-needs-cobalt-and-lithium
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PSS. Resteemed.
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When the oil and coal run out, quality of life will decline and objections to nuclear will also decline. People who need jobs and money tend to be more pragmatic.
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Great post, what's you take on hydrogen powered vehicles (hydrogen fuel cells)? I think a combination of mass transit, higher densities and electric vehicles will be the future. Hydrogen cells will be used for independent vehicles that need distance and possibly planes. Boats could also use hydrogen or solar and batteries in the ballasts.
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I think that we will use every available alternate technology including hydrogen fuel cells.
The downside of these things though are:
This is why I think liquid fuels like biodiesel or algae oil fuels will probably win out over hydrogen.
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Storing electricity in batteries is currently about 3 x more efficient than using it to create hydrogen for fuel cells, then generating electricity from the fuel cells. See here
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I used to think that the argument ' future technology will solve the problems' was a cop-out, a convenient excuse for not doing anything in the present. But it looks like different technologies really can replace fossil fuels. Being forced to build more dense cities and walk more would actually be an improvement I think.
even going back to using ships to cross oceans might not be all bad, the boat-trip that my parents took from New Zealand to England for New Zealand students going on their OE had the reputation of being a huge party boat and a great time!
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I agree. Maybe things will slow down a bit and become more human-scale.
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Cool post and an important discussion.
Just one note, everyone needs to remember that every solar panel, every battery, and every wind turbine (all "green") requires extensive mining to obtain the input materials. e.g. Fe, Li, etc.
These costs, i.e. the costs associated (both environmental and others) should be factored into just how renewable and how green any form of energy is generated, stored, or transported.
Tough discussions. Cool topic and we need to discuss this more...
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