A very important question is how long solar prices can continue to drop.
Assuming it continues a while, I have questions about whether it makes sense to transmit electricity long distances in such a world. A lot of smart people think transmission is very important to the clean energy buildout, but I don’t know. Transmission adds a fair bit of cost, and if solar gets cheap then it might make sense to pay the rooftop premium rather than the transmission premium.
So if solar keeps dropping in price, it may make sense to have rooftop solar everywhere + off-grid solar to power industrial applications.
Gigawatt-scale nuclear I think we could do for LCOE of 2¢/kWh if the industry and regulations were not so dysfunctional. Modular reactors will always be more expensive than that (maybe 4¢ best-case scenario), but the advantage of modular is that you reach some level of scale in manufacturing and deployment, which is where gigawatt-scale has really sucked (every gigawatt plant is bespoke). Modular is also better because you don’t have to do as much transmission as in a GW-scale plant.
If we get good at drilling holes in the ground, I think 3¢/kWh almost anywhere on the planet would be a good target for advanced geothermal. Also comes with the advantage of not having to worry about spent fuels and nuclear proliferation. Geothermal is also fantastic for low-grade heat needed for certain industrial processes like paper mills.
Wind is already pretty cheap, but it relies heavily on long-distance transmission, which as I’ve noted is a headache.
For mobile applications, high-density batteries are definitely possible. Batteries that have near the energy density of liquid hydrocarbon fuels have already been made in the lab, the challenge is switching over the manufacturing system and reaching scale.
Synthesizing liquid hydrocarbons is a great solution, especially until really high-density batteries arrive. I believe I bought the first quantity of zero-carbon jet fuel in the world when I was at Boom.
A very important question is how long solar prices can continue to drop.
Assuming it continues a while, I have questions about whether it makes sense to transmit electricity long distances in such a world. A lot of smart people think transmission is very important to the clean energy buildout, but I don’t know. Transmission adds a fair bit of cost, and if solar gets cheap then it might make sense to pay the rooftop premium rather than the transmission premium.
So if solar keeps dropping in price, it may make sense to have rooftop solar everywhere + off-grid solar to power industrial applications.
Gigawatt-scale nuclear I think we could do for LCOE of 2¢/kWh if the industry and regulations were not so dysfunctional. Modular reactors will always be more expensive than that (maybe 4¢ best-case scenario), but the advantage of modular is that you reach some level of scale in manufacturing and deployment, which is where gigawatt-scale has really sucked (every gigawatt plant is bespoke). Modular is also better because you don’t have to do as much transmission as in a GW-scale plant.
If we get good at drilling holes in the ground, I think 3¢/kWh almost anywhere on the planet would be a good target for advanced geothermal. Also comes with the advantage of not having to worry about spent fuels and nuclear proliferation. Geothermal is also fantastic for low-grade heat needed for certain industrial processes like paper mills.
Wind is already pretty cheap, but it relies heavily on long-distance transmission, which as I’ve noted is a headache.
For mobile applications, high-density batteries are definitely possible. Batteries that have near the energy density of liquid hydrocarbon fuels have already been made in the lab, the challenge is switching over the manufacturing system and reaching scale.
Synthesizing liquid hydrocarbons is a great solution, especially until really high-density batteries arrive. I believe I bought the first quantity of zero-carbon jet fuel in the world when I was at Boom.