Readit News logoReadit News
davis commented on U.S. Emissions Rise 4.2%, China's Fall 2.7%   theenergymix.com/u-s-emis... · Posted by u/triceratops
NoLinkToMe · 17 hours ago
There's a few points of nuance though.

1. it's not a representative month. Building a solar farm for two years and having it go online in one month, leads to big jumps. If you look at the previous year, in 2024 China added 277 GW, so 23 MW per month.

2. At the end of 2024 the US had 239 GW installed. So about the same order of magnitude as China added in 2024 (277 GW, or 15% more).

3. The fact China added in 2024 a similar amount of solar capacity as the US in its entire history, is partly a function of exponential growth in solar in general.

For example Spain doubled its capacity in 2019 versus 2018. Then doubled it again two years later in 2021. Then almost doubled it again two years later in 2022 etc.

In other words it's not so strange in solar actually to see you add in a single year, the same capacity as you've built in all the years prior, regardless of whether it is China. Spain doubled in 1-year period, and then doubled twice in a row in a 2-year period, in the most recent years.

Still it's an insane stat, just wanted to add some nuance. -- The fact we have a president who utters nonsense about wind and solar and is actively working against it, is insane and sad.

davis · 13 hours ago
My comment went into details why this month was an outlier by the way.
davis commented on U.S. Emissions Rise 4.2%, China's Fall 2.7%   theenergymix.com/u-s-emis... · Posted by u/triceratops
mperham · 18 hours ago
> a boom in solar that saw the country [China] add 92 gigawatts of capacity—that’s 92 billion watts—in a single month in May, compared to all-time U.S. installations of 134 GW.

That's an insane stat. China added 92GW of solar in May 2025 alone.

davis · 17 hours ago
It is an insane number but May 2025 is a bit of an outlier. The entire first half of the year they installed 197.85 and in May they installed 92.92 of that.

Much of this solar was rushed construction to get them in before the new electricity pricing policy goes into effect. It isn't known yet how much the buildout will drop off for the remainder of the year but it is pretty conceivable that some fraction of the construction for the rest of the year was "pulled" forward and rushed to get it in before June. I'm hopeful China's insane buildout will continue but we probably won't see numbers like May 2025 for awhile at least.

The short summary: if a renewable project was built and finished before June, it gets the old, more profitable electricity rates, but if it is finished after June, it is less profitable.

More details on this here: https://www.carbonbrief.org/explainer-how-chinas-renewable-p...

davis commented on U.S. Emissions Rise 4.2%, China's Fall 2.7%   theenergymix.com/u-s-emis... · Posted by u/triceratops
tuatoru · 18 hours ago
I haven't done the math but I would expect that more than all of China's decline is due to two effects:

population aging -- older people use less fossil fuel.

reduced household formation, in part driven by increased youth unemployment. It's impossible to get figures for this.

davis · 17 hours ago
The decline in emissions is due to the massive build out of renewables of solar and wind. The amount they are building is insane. Your theory is ignorant and you are spreading misinformation and nonsense.
davis commented on Show HN: A zoomable, searchable archive of BYTE magazine   byte.tsundoku.io... · Posted by u/chromy
davis · 8 days ago
I love this
davis commented on We may not like what we become if A.I. solves loneliness   newyorker.com/magazine/20... · Posted by u/defo10
Nathanba · a month ago
Real humans are also fake and they are also traps who are waiting to catch you when you say something they don't like. Then they also use every word and piece of information as ammunition against you, ironically sort of similar to the criticism always levied against online platforms who track you and what you say. AI robots are going to easily replace real humans because compared to most real humans the AI is already a saint. They don't have an ego, they don't try to gaslight you, they actually care about what you say which is practically impossible to find in real life.. I mean this isn't even going to be a competition. Real humans are not going to be able to evolve into the kind of objectively better human beings that they would need to be to compete with a robot.
davis · a month ago
Man, you need to hang around different and good people if this is your world view.
davis commented on OpenAI claims gold-medal performance at IMO 2025   twitter.com/alexwei_/stat... · Posted by u/Davidzheng
demirbey05 · a month ago
Progress is astounding. Recently report published about evaluation of LLMs on IMO 2025. o3 high didn't even get bronze.

https://matharena.ai/imo/

Waiting for Terry Tao's thoughts, but these kind of things are good use of AI. We need to make science progress faster rather than disrupting our economy without being ready.

davis commented on First American pope elected and will be known as Pope Leo XIV   cnn.com/world/live-news/n... · Posted by u/saikatsg
mrlonglong · 4 months ago
He is not a US citizen. He might have been born in the States but he is a fully naturalised citizen of Peru.
davis · 4 months ago
Being born in the US means you are a citizen. He holds dual citizenships
davis commented on Are Plants Farming Us?   inleo.io/@gentleshaid/are... · Posted by u/signa11
davis · 5 months ago
I saw the Grok image and just closed it. So cringe
davis commented on Demystifying the (Shebang): Kernel Adventures   crocidb.com/post/kernel-a... · Posted by u/thunderbong
davis · 5 months ago
Articles like this are just such a delight. History + common software + code snippets is a great combo
davis commented on 2025 AI Index Report   hai.stanford.edu/ai-index... · Posted by u/INGELRII
Taek · 5 months ago
There's a couple of things at play here (renewable energy is my industry).

1. Renewable energy, especially solar, is cheaper *sometimes*. How much sunlight is there in that area? The difference between New Mexico and Illinois for example is almost a factor of 2. That is a massive factor. Other key factors include cost of labor, and (often underestimated) beautacratic red tape. For example, in India it takes about 6 weeks to go from "I'll spend $70 million on a solar farm" to having a fully functional 10 MW solar farm. In the US, you'll need something like 30% more money, and it'll take 9-18 months. In some parts of Europe, it might take 4-5 years and cost double to triple.

All of those things matter a lot.

2. For the most part, capex is the dominant factor in the cost of energy. In the case of fossil fuels, we've already spent the capex, so while it's more expensive over a period of 20 years to keep using coal, if you are just trying to make the budget crunch for 2025 and 2026 it might make sense to stay on fossil fuels even if renewable energy is technically "cheaper".

3. Energy is just a hard problem to solve. Grid integrations, regulatory permission, regulatory capture, monopolies, base load versus peak power, duck curves, etc etc. If you have something that's working (fossil fuels), it might be difficult to justify switching to something that you don't know how it will work.

Solar is becoming dominant very quickly. Give it a little bit of time, and you'll see more and more people switching to solar over fossil fuels.

davis · 5 months ago
Just curious: where do you work given it is your industry?

u/davis

KarmaCake day783December 1, 2009View Original