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589 points atomic128 | 3 comments | | HN request time: 0.615s | source
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atomic128 ◴[] No.41840791[source]
Reuters article, no paywall: https://www.reuters.com/technology/artificial-intelligence/g...

CNBC article, no paywall: https://www.cnbc.com/2024/10/14/google-inks-deal-with-nuclea...

No battery farm can protect a solar/wind grid from an arbitrarily extended period of bad weather. If you have battery backup sufficient for time T and the weather doesn't cooperate for time T+1, you're in trouble.

Even a day or two of battery backup eliminates the cost advantage of solar/wind. Battery backup postpones the "range anxiety deadline" but cannot remove it. Fundamentally, solar and wind are not baseload power solutions. They are intermittent and unreliable.

Nuclear fission is the only clean baseload power source that can be widely adopted (cf. hydro). After 70 years of working with fission reactors, we know how to build and operate them at 95%+ efficiency (https://www.energy.gov/ne/articles/what-generation-capacity). Vogtle 3 and 4 have been operating at 100%.

Today there are 440 nuclear reactors operating in 32 countries.

Nuclear fission power plants are expensive to build but once built the plant can last 50 years (probably 80 years, maybe more). The unenriched uranium fuel is very cheap (https://www.cameco.com/invest/markets/uranium-price), perhaps 5% of the cost of running the plant.

This is in stark contrast to natural gas, where the plant is less expensive to build, but then fuel costs rapidly accumulate. The fossil fuel is the dominant cost of running the plant. And natural gas is a poor choice if greenhouse emissions matter.

Google is funding construction of 7 nuclear reactors. Microsoft is paying $100/MWh for 20 years to restart an 819 MW reactor at Three Mile Island. Sam Altman owns a stake in Oklo, a small modular reactor company. Bill Gates owns a stake in his TerraPower nuclear reactor company. Amazon recently purchased a "nuclear adjacent" data center from Talen Energy. Oracle announced that it is designing data centers with small modular nuclear reactors. As for Meta, see Yann LeCun's unambiguous comments: https://news.ycombinator.com/item?id=41621097

In China, 5 reactors are being built every year. 11 more were recently announced. The United Arab Emirates (land of oil and sun) now gets 25% of its grid power from the Barakah nuclear power plant (four 1.4 GW reactors, a total of 5.6 GW).

Nuclear fission will play an important role in the future of grid energy, along with solar and wind. Many people (e.g., Germany) still fear it. Often these people are afraid of nuclear waste, despite it being extremely tiny and safely contained (https://en.wikipedia.org/wiki/Dry_cask_storage). Education will fix this.

Nuclear fission is safe, clean, secure, and reliable.

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pfdietz ◴[] No.41841976[source]
Assuming only batteries are used for storage is one of the common bullshit arguments against renewables. It's bad strawman engineering.

What works much better is a combination of batteries and an e-fuel like hydrogen. Batteries handle most of the stored energy flow; hydrogen handles the rarer long term storage needs. They complement each other, in a way like cache memory and RAM complement each other.

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1. Moldoteck ◴[] No.41846534[source]
hydrogen generators either use a mix with gas or pure h2 that has huge nox emissions. And the problem is that green h2 isn't economical now and even if it'll be someday - the plant will still need subsidies always due to low usage
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2. pfdietz ◴[] No.41847392[source]
Green H2 isn't competitive with cheap NG unburdened by CO2 taxes.

Realize that global H2 production is enormous -- 75 million tons/year for pure H2, another 24 MT for hydrogen in mixed gas streams -- and much of this needs to be produced even when we're entirely off fossil fuels. Green hydrogen is not an optional thing. So all the problems of making and storing it are going to have to be solved. Once that's done, adding some turbines (very much like existing ones; it's likely possible to just retrofit existing NG turbines with new combustors) is not a large additional step. These turbines already have an after stage that reduces NOx back to N2.

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3. Moldoteck ◴[] No.41847534[source]
It's not that easy https://power.mhi.com/special/hydrogen as you make it sound