this post was submitted on 24 May 2025
114 points (100.0% liked)

Climate - truthful information about climate, related activism and politics.

6583 readers
278 users here now

Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world.  About 1C of total warming.  Second chart:  about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability.  Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases.  About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.

founded 2 years ago
MODERATORS
 

It's worth noting that he also fired many of the staff who know how to ensure that they're actually safe, as well as the staff who would approve financing.

top 50 comments
sorted by: hot top controversial new old
[–] [email protected] 9 points 5 hours ago

great idea, nothing wrong will come from pressuring the nuclear power regulators. nuh uh.

[–] [email protected] 6 points 12 hours ago* (last edited 12 hours ago)

It really depends on what these reactors are going to be used for. Are they going to be licensed to private corporations to power data centers, or are they going to provide power to citizens homes?

[–] [email protected] 15 points 17 hours ago (2 children)

Beginning investments nuclear at this point when renewables so obviously to everyone in the know are beating them on all accounts is extremely on brand for someone as dumb as Trump

[–] [email protected] 2 points 13 hours ago (1 children)

Nuclear is the single best technology humans have invented. A broken clock is right twice a day.

[–] [email protected] 10 points 13 hours ago

Being able to harness the power of atoms is cool, but directly harnessing the power of a star is arguably far cooler.

[–] Mihies 2 points 16 hours ago* (last edited 16 hours ago) (5 children)

Nope, today nuclear actually makes sense. Renewables are cool and relatively cheap but only as long as they output power. Then what? Spin up that coal power plant such as during night? And produce a ton of climate warming co2 and a lot of pollution. The problem is that we don't have energy storage nor a viable solution for it. Said that, cutting corners is a big no-no.

[–] [email protected] 6 points 10 hours ago* (last edited 5 hours ago) (2 children)

If we got our head out of our ass and invested into battery tech - e.g. sodium-ion batteries or proton batteries, we could very quickly build sustainable energy storage instead of relying on technology that is potentially dangerous or continuing to rely on fossil fuels.

[–] [email protected] 1 points 2 hours ago (1 children)

Nuclear has similar but opposite problem of renewables. Its hard to tune down and back up in power output, and its economics require near full capacity, and high market prices,to justify them.

Renewables are always better, because they don't need as high market electricity prices, they have short and modular development times, modular battery addition.

Nuclear projects require suppression of renewables to ensure limited competition in supply, when they are finally built.

[–] [email protected] 1 points 1 hour ago

Nuclear doesnt need to ramp up and down. Just run them full tilt for baseline loads. Power use peaks during the day, when solar is most effective. Leave some extra unused nuclear capacity to pick up the slack when renewables cant meet demand, such as during winter storms. And then add batteries to smooth out the loads.

[–] Mihies 1 points 6 hours ago (1 children)

There are too many if-s in there. When you build energy strategy for at a country level, you can't base it on if-s. And even if we had viable battery technology today, there are still problems building them at scale, their cost and their volume. As of today, the more renewables you have, more expensive stable energy gets or you simply burn coal or gas when required.

[–] [email protected] 4 points 5 hours ago* (last edited 4 hours ago)

There's only ifs because powerful forces (that do not represent the will of humanity) do everything they can to suppress or derail renewable energy efforts and divert our collective focus to war and conflict.

China is proving sodium-ion batteries are viable. Sodium is abundant and the batteries seem cheap to produce. Solar panels are also cheap to produce.

Instead of economic war or other forms of conflict, we could cooperate on these technologies and move forward as a species.

It's all very easy when you realize that war and conflict are not in anyone's best interest, could spell the end of our planet's habitability, and could cause death and suffering that make previous World Wars look like child's play.

We already know fossil fuels are undesirable for the planet and we've already had plenty of nuclear disasters.

Let's worry about expanding nuclear technologies when we achieve fusion and the world achieves stability.

[–] ChairmanMeow 7 points 13 hours ago (1 children)

Nuclear doesn't make sense for that purpose because it'd have to quickly be able to spin up and down. Most reactor designs aren't really able to do it quickly in normal operations, and those that can can't do so in a way that makes any economic sense. They're financially outcompeted by their alternatives.

Storage is the solution, which we can build today in a viable way and is rapidly becoming cheaper and cheaper.

The financial case for nuclear today is shoddy at best. It's why no company wants to touch it with a ten-foot pole unless heavy government subsidies are involved. The case for nuclear in ten years is, given the continuous advancements in renewable energy costs and battery storage tech, almost certainly dead.

[–] Mihies 0 points 12 hours ago (1 children)

Nuclear doesn’t make sense for that purpose because it’d have to quickly be able to spin up and down. Most reactor designs aren’t really able to do it quickly in normal operations, and those that can can’t do so in a way that makes any economic sense. They’re financially outcompeted by their alternatives.

Yes, you are right about nuclear output flexibility. Their purpose is to provide stable output, not chime in when required - and that's the problem with renewables - there is no good solution to compensate when they are not producing. Feel free to list those alternative reliable solutions.

Storage is the solution, which we can build today in a viable way and is rapidly becoming cheaper and cheaper.

And I have yet to see real energy storage data. All I read is just "energy storage is the solution (which, of course, it is, someday)" yadda yadda. So, numbers, please.

[–] ChairmanMeow 4 points 11 hours ago (1 children)

Our best current alternative option that's already there is sadly gas. It's fast, cheap and emissions are not the worst of the bunch. Still bad though.

As far as battery storage is concerned, battery prices have dropped 97% in the last three decades (and it's still dropping quite quickly). See https://ourworldindata.org/battery-price-decline for a pretty good overview. And that's not taking into account other forms of energy storage like water-based storage or new batteries based on sodium.

The batteries we have now are already cheap enough to purchase for individual customers, and including solar panels means it's already possible to effectively take houses off the grid. In 10 years those prices will be 50-25% of their current price in pessimistic scenarios. Solar is dropping in price at similar rates.

[–] Mihies -1 points 6 hours ago

Yep, gas is a good climate warming enabler. Which we want to avoid since we are fighting climate warming - funny eh, that renewables instead of nuclear causes more gas/coal being burned.

As for batteries, perhaps, but today we don't have any of those at scale required. And while houses could get off grid today with li-ion batteries where lithium is not infinite (nor are rare earths required), it doesn't solve cities and industry or energy storage at scale. Plus those batteries tend to catch fire which is hard to extinguish. Water based storage is limited by geography. And so on.

[–] [email protected] 6 points 14 hours ago (1 children)

but only as long as they output power.

We could say the same about nuclear power:

EDF cuts nuclear production in reaction to soaring temperatures

[–] Mihies -1 points 14 hours ago

Sure, they are not perfect. But newer ones are much more resilient to droughts. And such droughts are not that common, also while they affected power output it's not by that much - if I recall it was something in line with 10%.

[–] [email protected] 7 points 15 hours ago (14 children)

If you start a nuclear project today, you'll get it in 20 years. And that's for conventional reactor designs with all their well known flaws. If you spend the same money on renewables and storage, you'll have it all up and running next year. We don't have 20 years. We need solutions now.

[–] [email protected] 1 points 14 hours ago* (last edited 14 hours ago) (2 children)

This isn't even remotely true. Japan builds nuclear reactor in average of 5 years.

Edit for the down vote brigade:

80% or all nuclear reactors go from official planning to commercial production in under 10 years.

The longest process in building a nuclear reactor is cutting through red tape and getting permits cause of all the NIMBY and idiots progating mytha and lies about nuclear that originate in fossil fuels lobby.

Nuclear is the most ecologically friendly and safe power generation source we have until industrial scale fusion gets hammered out.

[–] [email protected] 3 points 10 hours ago

I wouldn't trust the Trump administration with building a styrofoam model of a nuclear reactor.

[–] [email protected] 5 points 11 hours ago

How many nuclear reactors did Japan build in the past five years? Ten years? Twenty years? Thirty years?

load more comments (13 replies)
[–] [email protected] 4 points 16 hours ago (2 children)

No, we have viable energy storage solutions already. We haven't built them out, but they are already feasible. And the best part about them is that they get more feasible each year, while nuclear becomes less and less feasible each year.

Assuming that you start today, by the time the first nuclear plant comes online, it will be so wildly uncompetitive that only huge amounts of subsidies will be able to keep it running.

Closing down existing nuclear was a mistake, and there's probably an argument to be made that scaling back on its construction and R&D was also a mistake. But trying to go back to nuclear at this point when renewables and storage are so obviously taking over is a larger mistake.

[–] Mihies 2 points 15 hours ago (2 children)

What viable solution we have for i.e. a week worth of energy in worst case scenario? Let's take Slovenia for example with yearly consumption of 12.95 TWh, a week worth of energy would be 248 GWh. And during winter this number is probably higher. How would you store it? Note that US consumption is twice as high and population is x150.

[–] [email protected] 1 points 1 hour ago

Slovenia is fairly high solar production with mildish winters. But winter heat needs storage.or heating fuel. A storage solution is hot water, and hydronic floor hrating, and heat pumps. But traditional heating fuel, can offload power requirements in low seasonal solar production.

[–] [email protected] 3 points 13 hours ago (1 children)

A scenario where you get zero production for a week is very unlikely - broadly speaking, you cope with this by building out production to produce a massive surplus, with various industries that can at variable rates use up the massive amounts of cheap power in the base case, then you build up storage to cope with the most likely scenarios of capacity reduction/smoothing out the price curve throughout the day.

It's also important to note that demand is far from static - people can and will reduce their usage when incentivized to do so, usually in the form of raising prices in low capacity scenarios. It's already starting to become quite popular to do so today, with spot price electricity plans allowing people to pay ridiculously low rates by aligning their energy usage with capacity availability - things like charging EVs/running laundry/running dishwashers/storing up thermal energy.

[–] Mihies 1 points 12 hours ago

That's why I wrote "worst case". Imagine a winter rainy week with short days when heat pumps are running like crazy. But again, I have yet to see real energy storage solutions or real such scenarios.

[–] [email protected] 1 points 14 hours ago (1 children)

In what way does nuclear get less feasible? It's the safest form of power per kw even when you weigh down the stats with crap like Chernobyl that never would have left drawing paper in the west, and uses the least amount of land so that low carbon footprint means something where we aren't tearing down trees as power demands expand.

[–] [email protected] 2 points 13 hours ago (1 children)

Their cost goes up over time while the cost of both renewables and energy storage is plummeting.

[–] [email protected] 1 points 13 hours ago

The cost goes up entirely due to red tape and lobbying from fossil fuel organizations. Remove the boot that is nuclear fear induced largely by oil companies and actually commit to nuclear R&D and the cost will drop. And even the recent breakthroughs China made with Thorium made are genuine, even more so. And unlike every other power generation industry, nuclear operators are mandated by law to put aside funding to handle waste. Tell me which solar industry members are doing anything about PFAS generated in their production or wind turbine operators who give a damn about how many landfills they are flooding with expired turbine blades.

[–] [email protected] 37 points 21 hours ago

If there's one thing that you should compromise on when it comes to nuclear power it's definitely safety.

[–] [email protected] 21 points 22 hours ago* (last edited 22 hours ago)

Hey good news everyone, instead of 40 years to build a new reactor, it’ll only take 39 years. What a relief. Good thing we didn’t fall for all that free sunlight and wind bullshit!

Hey, maybe nuclear plants can run on clean coal!

[–] [email protected] 13 points 21 hours ago

The one fucking thing you never want to cut corners on, and this clown is deregulating it. JFC.

[–] [email protected] 4 points 17 hours ago* (last edited 17 hours ago) (2 children)

If the nuclear industry is going to be quadrupled, and gas and oil are similarly enlarged, and renewables are at least not shrinking, what are people supposed to do with all that extra power in such a short time? I mean, I get that induced demand is a thing but... a quadrupling of long-standing industries? Is there any intention for this plan to be realistic?

[–] [email protected] 5 points 16 hours ago (2 children)

Feed the hungry AI, I guess?

load more comments (2 replies)
[–] [email protected] 3 points 15 hours ago

Trump doesn't do realism.

[–] [email protected] 5 points 19 hours ago

Soviet quality nuclear plants. Great idea. What could possibly go wrong?

[–] [email protected] 3 points 17 hours ago

I seem to remember something going wrong before when corners were cut with nuclear...

[–] [email protected] 6 points 21 hours ago

We need to work on permitting of New plants. Not new construction of Old plants.

But I get it, Don likes towers.

[–] [email protected] 2 points 17 hours ago* (last edited 14 hours ago) (1 children)

Probably, the comapny behind the reactors (the only one who has a financial benefit) promised to build a Trump tower instead of the cooling tower, so 2 companies/families benefit now and 99.9% have to pay for that.

[–] [email protected] 1 points 16 hours ago

If the trump tower exists over the reactor, hopefully he will move in permanently

load more comments
view more: next ›