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How do we cut down on emissions from steel, cement, and plastic?

gatesnotes.com

11–20 of 129 posts

Re: How do we cut down on emissions from steel, cement, and plastic?

#11
post #2

> Some industrial processes can’t easily be electrified because they require too much heat. One possible alternative is to get the heat from a next-generation nuclear plant. Glad to see this. I take any future large-scale green energy initiative as unserious if it doesn’t take an honest look and consideration at new nuclear energy power plants.

There's three necessities I see in a green scale initiative: carbon tax, nuclear, and sequestration (CC).

I also have a hard time taking anyone serially if they don't talk about how we need a diversified energy portfolio nor understand the difficulties of energy density. I feel like many repeat popular points but do not spend time trying to understand. I think that's how we get politicians that consider climate change as one of their top priorities saying that geoengineering and CC are "false solutions". I also don't know any climatologist who isn't pro nuclear (which means nuclear + renewables, not nuclear vs renewables).

The IPCC endorses the use of nuclear power too[0]. Being anti nuclear seems to me, as a scientist, anti-scientific. Since it is against what the scientists studying this are recommending.

[0] https://www.world-nuclear.org/press/press-statements/the-ipc...

Re: How do we cut down on emissions from steel, cement, and plastic?

#13
post #3

Unpopular opinion: adaptation is best (only?) solution.

Unpopular opinion: adaptation at +4C is genocide

That seems likely. But (yet another unpopular opinion): "Zero emissions now" is also genocide, or at least large-scale death.

Re: How do we cut down on emissions from steel, cement, and plastic?

#14
post #12
post #8

Earlier quoted context omitted.

There's no such thing as adapting to runaway climate change.

Of course there is.

Depends on your definition of "runaway". If runaway = Venus, then no, there is no adapting to that.

Re: How do we cut down on emissions from steel, cement, and plastic?

#15
post #2

> Some industrial processes can’t easily be electrified because they require too much heat. One possible alternative is to get the heat from a next-generation nuclear plant. Glad to see this. I take any future large-scale green energy initiative as unserious if it doesn’t take an honest look and consideration at new nuclear energy power plants.

There's three necessities I see in a green scale initiative: carbon tax, nuclear, and sequestration (CC). I also have a hard time taking anyone serially if they don't talk about how we need a diversified energy portfolio nor understand the difficulties of energy density. I feel like many repeat popular points but do not spend time trying to understand. I think that's how we get politicians that consider climate chang…

Nuclear for power no longer makes sense; wind, solar and batteries are just too cheap.

Nuclear for heat makes more sense.

Re: How do we cut down on emissions from steel, cement, and plastic?

#16
post #12

Earlier quoted context omitted.

Of course there is.

Depends on your definition of "runaway". If runaway = Venus, then no, there is no adapting to that.

Humans are really good at adapting to new situations; even if climate change causes a massive reduction in population and standard of living, I’m confident that some humans will survive.

I don’t know what the solutions will look like, but sci-fi authors have shown us some semi-plausible solutions: domed, climate controlled cities here or elsewhere in the solar system; generation ships that aren’t dependent on any planet; a reversion to small tribal societies.

Re: How do we cut down on emissions from steel, cement, and plastic?

#18

Earlier quoted context omitted.

There's three necessities I see in a green scale initiative: carbon tax, nuclear, and sequestration (CC). I also have a hard time taking anyone serially if they don't talk about how we need a diversified energy portfolio nor understand the difficulties of energy density. I feel like many repeat popular points but do not spend time trying to understand. I think that's how we get politicians that consider climate chang…

Nuclear for power no longer makes sense; wind, solar and batteries are just too cheap. Nuclear for heat makes more sense.

Bill Gates explains that batteries are still orders of magnitude too expensive to be a complete solution: https://youtu.be/d1EB1zsxW0k?t=520

Re: How do we cut down on emissions from steel, cement, and plastic?

#19

Earlier quoted context omitted.

There's three necessities I see in a green scale initiative: carbon tax, nuclear, and sequestration (CC). I also have a hard time taking anyone serially if they don't talk about how we need a diversified energy portfolio nor understand the difficulties of energy density. I feel like many repeat popular points but do not spend time trying to understand. I think that's how we get politicians that consider climate chang…

Nuclear for power no longer makes sense; wind, solar and batteries are just too cheap. Nuclear for heat makes more sense.

Can you explain more about why they don't make sense?

My understanding is that they're extremely desirable. They're a drop-in replacement for millions of hydrocarbon plants. They can scale up/down with demand. They produce enormous amounts of energy and emit no C02.

Think of the materials and industrial waste to produce 1 nuclear power plant versus all of the battery, solar cells, and turbines to equal the same in power and scalability.

Besides, why do the technologies need to be exclusive? Shouldn't we be using them all where it makes sense?

Re: How do we cut down on emissions from steel, cement, and plastic?

#20

Earlier quoted context omitted.

Nuclear for power no longer makes sense; wind, solar and batteries are just too cheap. Nuclear for heat makes more sense.

Can you explain more about why they don't make sense? My understanding is that they're extremely desirable. They're a drop-in replacement for millions of hydrocarbon plants. They can scale up/down with demand. They produce enormous amounts of energy and emit no C02. Think of the materials and industrial waste to produce 1 nuclear power plant versus all of the battery, solar cells, and turbines to equal the same in po…

Cost [1]. Time from breaking ground to "permission to operate" as well (even if you cut red tape and systemize manufacturing of nuclear generators, you will not be as fast as wind, solar, and batteries).

Solar PV Thin Film Utility Scale: $36-$44/MWh | Onshore Wind: $29-$56/MWh | Nuclear: $112-$189/MWh

Can you build nuclear faster than the rest of the world can build and install PV solar and onshore/offshore wind turbines? Unlikely. Tesla installed the Hornsdale Power Reserve in 90 days. Bigger utility scale battery systems will take longer, but no where near 10 years.

[1] https://www.lazard.com/perspective/levelized-cost-of-energy-...

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