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Re:Nuclear power looks to regain its footing 10 years after ... by cpach on Wednesday March 10, 2021 @11:06PM (#26420074)
I don’t really understand how wind and sun could totally replace nuclear. How do we get electricity during the night? How do we get electricity when it’s cloudy but the wind is light at the same time?
Re:Nuclear power looks to regain its footing 10 years after ... by MrApathy on Wednesday March 10, 2021 @11:13PM (#26420126)
You build a big grid. Wind won't be light everywhere. Load is lower at night, so lack of sunlight is less of an issue. Maybe people start placing battery packs in their homes. Battery technology has seen large investments over the past decade and performance is better than ever. When demand is high, inexpensive natural gas can be turned on quickly.

There are a lot of options, almost all of them less expensive than nuclear. That's my point, traditionally nuclear was good for baseline and renewable doesn't have a comparable equivalent apart from hydro. But other renewables like wind are getting to be so efficient and inexpensive, that I don't see how building an excess of it can't compete with nuclear.

Re:Nuclear power looks to regain its footing 10 years after ... by godelski on Wednesday March 10, 2021 @11:32PM (#26420272)
> Battery technology has seen large investments over the past decade and performance is better than ever.

Battery technology still has a bit to go before it can perform this task though. Even if we don't account for freak weather events (which are becoming more common).

> When demand is high, inexpensive natural gas can be turned on quickly.

Is this a good option though?

I think the only good argument against nuclear is cost, so I agree with that. But if we consider the cost of emissions, storage (these aren't counted in solar and wind and don't make for fair comparisons to base loads like coal, gas, or nuclear), or other factors that fall under "tragedy of the commons" (i.e. putting sources on even playing fields) the prices become more comparable (depending how you weigh factors). But it really does come down to how much you value the cost of climate and human lives (since nuclear is about 50x safer than natural gas).

Cost is a good argument, but we have to define our priors because "cost" means different things to different people. I for one would rather pay more for electricity and save human lives and reduce emissions. Just at $50/ton tax (low) would make it competitive[0], assuming that we couldn't regain economies of scale.

[0] https://www.axios.com/nuclear-energy-could-be-competitive-bu...

Re:Nuclear power looks to regain its footing 10 years after ... by kristopolous on Thursday March 11, 2021 @04:27AM (#26422049)
Battery technology isn't as far off as you think.

We're talking power station level storage, as in it doesn't have to be light, cheap and consumer durable.

Risks of fire or toxicity from consumers doing dumb things doesn't have to be worried about for instance. A pet gnawing at it and getting sick? Not happening.

So not unobtainium but expensivium can be used. Also operating environments can be dictated, such as temperature, humidity, water cooling or say if the battery technology required a contraption the size of a house, etc.

And lastly it doesn't have to be produced at scale. The lead time for some power station equipment is already months to years. Clunky awkward manufacturing is production ready.

There's many more possibilities given those possibilities. Right now it's Li-ion and nicad at installation sites but look for that changing soon

Re:Nuclear power looks to regain its footing 10 years after ... by godelski on Thursday March 11, 2021 @04:36PM (#26429289)
The problem with intermittent power and batteries is that you don't have to equal the capacity of an on demand or base load system, you have to have higher capacity. This does vary dramatically between different areas. For example, Nevada doesn't have the same requirements as New England. Nevada has fairly consistent seasons and isn't as subject to storms, thus they don't need much excessive storage. On the other hand New England suffers frequent heavy seasonal storms and long winters that make storage more difficult. Even more so when we are talking about the frequency of these events increasing due to climate change.

The problem is complicated.

> A pet gnawing at it and getting sick? Not happening.

Power outages are often caused by animals. 11% are from squirrels[0]. SQUIRRELS!

> Also operating environments can be dictated, such as temperature, humidity, water cooling or say if the battery technology required a contraption the size of a house, etc.

This just adds to the nuance from above. Because now you need to power your containment. This needs priority over powering homes actually. So now you need more excess and more backups because this is going to be expensive if it fails and take a long time to get back up.

A lot can be reduced if people start building battery systems in their homes. But most people don't have $5k-$15k to drop on a powerwall. But that is shifting the burden to consumers and I'm not sure that's a fair comparison because this consumer cost isn't included in our pricing comparisons. Though this would be a much more robust system (assuming we ignore increase in risk of fire) and greatly reduce damage done by events like what we saw in Texas, even if there is a lot of human error involved.

Climate and power is an extremely difficult topic. Anyone saying otherwise is uninformed.

[0] https://gesrepair.com/what-are-the-most-common-causes-of-pow...

Re:Nuclear power looks to regain its footing 10 years after ... by kristopolous on Thursday March 11, 2021 @11:59PM (#26432362)
Right. The point is mass produced consumer devices we're familiar with have different constraints than a power grid so most people's existing familiarity with low cost retail batteries isn't all that relevant.

For instance Lithium–air batteries have about the energy density of oil but comes with loads of problems that make them currently impractical for consumer devices. There's fewer hurdles however in making it power station ready.

Same thing with liquid electrodes research. There could be large reservoirs that are on multiday flow cycles for capacity smoothing.

It's like comparing a drainage pipe to a hydropower river dam, it's fundamentally a different problem space

Re:Nuclear power looks to regain its footing 10 years after ... by godelski on Friday March 12, 2021 @12:08AM (#26432400)
Yes, exactly. Your battery that is in your phone that dies after 2 years of use is the main driver of battery innovation. If you quick draw from these your battery will light on fire (no joke, please don't test because lithium fires are not good, even if you manage to put it out... i.e. let it burn).
Re:Nuclear power looks to regain its footing 10 years after ... by fomine3 on Thursday March 11, 2021 @02:08AM (#26421167)
That's why nuclear is important for island and industrial country like Japan. Island country is difficult to develop well-balanced renewables because of the grid is small and difficult to connect to other countries' grid. Sadly Japan is now very difficult to build new nuclear plants for obvious reason. I suspect that that's why Japan gov and Toyota is going to develop Hydrogen.
Re:Nuclear power looks to regain its footing 10 years after ... by nitrogen on Wednesday March 10, 2021 @11:30PM (#26420262)
Load is lower at night

Only in warm climates.

Re:Nuclear power looks to regain its footing 10 years after ... by whoooooo123 on Thursday March 11, 2021 @02:10AM (#26421194)
Yes, and also load is higher in the winter, when there's less wind and sunshine.
Re:Nuclear power looks to regain its footing 10 years after ... by hyper_dynamics on Thursday March 11, 2021 @04:06AM (#26421895)
Less wind in the winter is surely not true for countries in Europe.
Re:Nuclear power looks to regain its footing 10 years after ... by pydry on Thursday March 11, 2021 @06:04AM (#26422703)
Overproduction, storage and demand side shifting. The market can choose which mix of these works best in which market - which might vary a lot from market to market.

It's rather ironic that the carbon industry spent the last 30 years telling us through Koch institutes etc. that the market knew best (when fossil fuels were most viable financially) and now that the green energy competition is undercutting them to death, suddenly markets don't solve anything.

Re:Nuclear power looks to regain its footing 10 years after ... by nl on Wednesday March 10, 2021 @11:11PM (#26420108)
Transmission lines and storage.

There are multiple 2500km transmission lines in use today. They are relatively cheap to build and solve almost all the intermitency issues.

China has a few over 3000km long already, eg: https://spectrum.ieee.org/energywise/energy/the-smarter-grid... and there is a 4500km long line planned for Australia to Singapore: https://en.wikipedia.org/wiki/Australia%E2%80%93ASEAN_Power_...

Re:Nuclear power looks to regain its footing 10 years after ... by JohnJamesRambo on Wednesday March 10, 2021 @11:08PM (#26420089)
Store the power. Batteries, pump water up into lakes, melt salt, etc.
Re:Nuclear power looks to regain its footing 10 years after ... by kalleboo on Wednesday March 10, 2021 @11:11PM (#26420109)
From the numbers we saw during the Texas power outage, the amount of batteries required would be mind-boggling.

Lots of places do not have the geography required for pumped storage, or it is already fully exploited (building a new dam is also an environmental disaster)

Molten salt also still seems to be in it's infancy.

The most practical solution I could see today to live without baseline power would be to build a massive inter-continental HVDC grid. Large grids have a tendency to be fragile and have catastrophic failures though.

Re:Nuclear power looks to regain its footing 10 years after ... by godelski on Wednesday March 10, 2021 @11:34PM (#26420281)
To be honest the best probably would be to get small modular reactors (SMRs) into mass production. That would give economies of scale along with other benefits. But we aren't quite there yet. I'd imagine if SMRs became popular larger reactors would as well too.
Re:Nuclear power looks to regain its footing 10 years after ... by manicdee on Thursday March 11, 2021 @01:47AM (#26421056)
Can you imagine how a Texan operator of a SMR would have cut corners and what the damage to their plant would have been in this cold snap?

Remembering that the damage to Texan energy production was due to failure to winterise their equipment after the last two cold snaps. It has happened before, they were told it was going to happen again, but the legislature decided that it was best to let the market decide the outcome.

An SMR operator refusing to winterise their plant would end up in a similar situation: part of the equipment freezes or ices over (because antifreeze costs money), leading to an inability to scale up production until ambient temperatures rise far enough to defrost the frozen plant.

Re:Nuclear power looks to regain its footing 10 years after ... by pbourke on Thursday March 11, 2021 @03:02AM (#26421499)
Isn’t nuclear federally regulated today?
Re:Nuclear power looks to regain its footing 10 years after ... by godelski on Thursday March 11, 2021 @04:24PM (#26429173)
Yes, and nuclear facilities have significantly different standards from other facilities. The parent's comment is bad because the SMR wouldn't explode or leak if it wasn't properly winterized. It would shut down. But there is a lower chance of that happening simply because the significantly higher standards surrounding nuclear.
Re:Nuclear power looks to regain its footing 10 years after ... by manicdee on Sunday March 14, 2021 @03:34PM (#26458174)
Where did I suggest a SMR would explode or leak?
Re:Nuclear power looks to regain its footing 10 years after ... by bildung on Thursday March 11, 2021 @04:30AM (#26422074)
Texas' (additional) problem was lack of connectivity to the rest of the country. With a proper grid the outages wouldn't have occured.
Re:Nuclear power looks to regain its footing 10 years after ... by AtlasBarfed on Wednesday March 10, 2021 @11:24PM (#26420219)
Also, there will be hundreds of millions of EVs in about 10 years. With not-so-small batteries, charged by distributed rooftop solar. Many / most of the EVs will have batteries that are overprovisioned for daily driving in order to enable distance driving.
Re:Nuclear power looks to regain its footing 10 years after ... by adrianN on Wednesday March 10, 2021 @11:40PM (#26420326)
Making Methane is important too. We already have infrastructure for storing vast amounts of natural gas. We can just use it to store Methane made from Water, CO2 and electricity.
Re:Nuclear power looks to regain its footing 10 years after ... by neolog on Wednesday March 10, 2021 @11:08PM (#26420091)
Store it, or get it from somewhere else?