143
Solar energy now overlaps in cost with nuclear fuel alone for "cheap" modular reactors
(energy-utilities.com)
this post was submitted on 26 Aug 2023
143 points (95.0% liked)
Green Energy
2224 readers
145 users here now
Everything about energy production and storage.
Related communities:
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
That's what blew me away. People keep saying a lot of hand wavy stuff about storage but when you really dig into there isn't a great solution other than keeping an eye on it for a few hundred years. Making private company's responsible for stuff that generates no profits and requires repeated Inspection's and maintenance doesn't sound good to me.
We absolutely need nuclear. But we should approach it cautiously. I don't think discussion about nuclear is as cautious as it should be. But that's par for the course with humanities track record
There's no need to consider nuclear. The power storage requirements for a 100% - epsilon renewable grid are vastly smaller than the amount of battery that will be deployed to EVs in the next few years.
https://www.nature.com/articles/s41467-021-26355-z
Those batteries can be used either after they degrade to the point where the EV needs a new one, or while still in the EV if a small fraction of owners participate in V2G.
Additionally the accessible uranium reserves cannot make a significant impact on the world's energy requirements.
In 8 million tonnes of accessible natural uranium there are about 56,000 tonnes of U235. Fissioning all of this yields around 5000EJ of thermal energy Exhausting all techniques of reprocessing and breeding that have actually ever worked, there's about 10,000EJ.
The world used 620EJ of primary energy last year so the absolute most generous interpretation is there are 16 years of accessible fission energy, In any realistic scenario it's much, much less.
The amount of energy that can be provided via fission with current technology isn't a meaningful contribution and can't be deployed in a meaningful timeframe.
There may be niches where GW scale LWRs are a much better choice than other options. On the off chance they do crop up, what little uranium 235 there is should be reserved for those.
It still sounds crazy to most people : it's a long way to go that should be paved for speeding up modern consciousness.