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Air passengers exposed to high levels of ultrafine particles, study

https://www.theguardian.com/environment/2025/dec/12/air-passengers-extremely-high-levels-ultrafin...
1•sampo•3m ago•0 comments

British Army could have avoided Ajax vehicle injuries, says whistleblower

https://www.thetimes.com/uk/defence/article/army-ajax-injuries-whistleblower-nqkk9dh8n
1•_dain_•3m ago•0 comments

The Land Trap by Mike Bird

https://progressandpoverty.substack.com/p/book-review-the-land-trap-by-mike
1•JumpCrisscross•6m ago•0 comments

Show HN: Chorus is now open source

https://github.com/meltylabs/chorus
1•Charlieholtz•15m ago•0 comments

Show HN: Soup.lua: making Lua do what it shouldn't

https://github.com/if-not-nil/soup/tree/main/lua
1•qwool•16m ago•0 comments

Where are all the Canadians going?

https://www.bbc.com/travel/article/20251211-where-are-all-the-canadians-going
1•neom•18m ago•0 comments

An Interesting Set of Artifacts

https://drive.google.com/drive/folders/18uXq5Leil2rAY5ICOfKGryRFyDFYMh80?usp=drive_link
1•d4rkn0d3z•19m ago•2 comments

Dick Van Dyke turns 100

https://www.theguardian.com/film/2025/dec/13/dick-van-dyke-centenarian-100-mary-poppins-chitty-ch...
4•thunderbong•21m ago•0 comments

Fast Sequence Iteration in Common Lisp

https://world-playground-deceit.net/blog/2025/12/fast-sequence-iteration-in-common-lisp.html
2•BoingBoomTschak•23m ago•0 comments

News broadcast reunited 10,189 families separated by war [video]

https://www.youtube.com/watch?v=Xt052H_kVuo
1•bane•29m ago•0 comments

Show HN: DAUT – AI-powered documentation generator for your codebase

https://github.com/2dogsandanerd/DAUT
1•2dogsanerd•38m ago•0 comments

Former Apple, Google designer: "Are we stuck with the same Desktop UX forever?" [video]

https://www.youtube.com/watch?v=1fZTOjd_bOQ
5•joelkesler•40m ago•1 comments

10-minute scan could help millions with hard-to-treat high blood pressure

https://medicalxpress.com/news/2025-11-minute-scan-millions-hard-high.html
1•PaulHoule•40m ago•0 comments

The Antitrust Case Against Airbnb

https://www.thesling.org/the-antitrust-case-against-airbnb/
3•ilamont•40m ago•0 comments

The Rust Reference – Behavior considered undefined

https://doc.rust-lang.org/reference/behavior-considered-undefined.html#behavior-considered-undefined
3•Brysonbw•41m ago•0 comments

Rutland mosaic depicts 'long-lost' Troy story

https://le.ac.uk/news/2025/december/rutland-mosaic-long-lost-troy-story
1•geox•42m ago•0 comments

Best of times, worst of times: record fossil-fuel profits, inflation

https://www.sciencedirect.com/science/article/pii/S2214629625003020
2•hackandthink•44m ago•0 comments

Nicer Rust Diagnostics for Neovim

https://github.com/alexpasmantier/krust.nvim
2•alexpasmantier•44m ago•0 comments

A proactive approach to more secure code

https://www.microsoft.com/en-us/msrc/blog/2019/07/a-proactive-approach-to-more-secure-code
2•Brysonbw•44m ago•0 comments

Why mRNA-based Covid-19 vaccines can cause myocarditis

https://med.stanford.edu/news/all-news/2025/12/myocarditis-vaccine-covid.html
5•blumomo•45m ago•0 comments

My day as an augmented technical writer in 2030

https://passo.uno/my-day-tech-writer-2030/
2•theletterf•45m ago•0 comments

(Google) Scholar Labs: An AI Powered Scholar Search

https://scholar.googleblog.com/2025/11/scholar-labs-ai-powered-scholar-search.html
1•harias•46m ago•0 comments

Is AI actually a Bubble?

https://www.newyorker.com/culture/open-questions/is-ai-actually-a-bubble
1•criemen•46m ago•0 comments

Show HN: Deepr Simple and modern links manager app

https://github.com/yogeshpaliyal/Deepr
1•yogeshpaliyal•51m ago•0 comments

We lost Uber as a user – PostgreSQL mailing list

https://www.postgresql.org/message-id/5797D5A1.5030009%40agliodbs.com
2•sh_tomer•52m ago•1 comments

How will software developer jobs look like in 10-15 year?

1•chrilleweb•54m ago•2 comments

The impact of robotics and unmanned systems on law enforcement

https://www.europol.europa.eu/publication-events/main-reports/unmanned-futures
1•beedeebeedee•54m ago•0 comments

WebKit Features for Safari 26.2

https://webkit.org/blog/17640/webkit-features-for-safari-26-2/
4•ksec•56m ago•0 comments

Text Diffusion Models Are Faster at Writing Code

https://nathan.rs/posts/dllm-faster-code-generation/
2•nathan-barry•57m ago•0 comments

Show HN: Free reaction time and cognitive training games for esports players

https://gamingskilltest.com/en
1•zxcholmes•58m ago•0 comments
Open in hackernews

Analysis finds anytime electricity from solar available as battery costs plummet

https://pv-magazine-usa.com/2025/12/12/analysis-finds-anytime-electricity-from-solar-available-as-battery-costs-plummet/
50•Matrixik•1h ago

Comments

ramshanker•1h ago
Has any production battery become cheaper than LEAC ACID for computer UPS ? I have not seen new cheaper UPS getting launched.
fyrn_•52m ago
Many "solar power stations" can be used as a UPS, with competitive switching speed. Just not sold under that label. You can even get one made entirely in the US, but it will cost you: https://enphase.com/store/portable-energy/iq-powerpack-1500-...

But yeah, the cheap chinese "power stations" run circles around most UPS capacity wise. UPS market is very complacent.

jcheng•43m ago
Seems like an opportunity for someone
rightbyte•43m ago
UPS is kinda different since they are hardly used. I haven't done the calculation but it would guess lead acid is still cheaper?
PaulKeeble•34m ago
Lead Acid as far as I know is about $500 per KWh of usable space due to their depth of discharge being limited to about 50% and then they last about 3 to 5 years if they kept within their 500 cycles at most. Whereas a LiPho battery will last 10-15 years, 6000 cycles and costs about £120 a KWh. So I have no idea how UPS based on lead acid is ending up cheaper, its not based on the battery tech cheapness.
Rebelgecko•13m ago
Some of the power stations from Ecoflow/Anker/Bluetti are competitive in terms of price and capacity while still having a fast enough switchover for UPS purposes.

They tend to have features that may not be necessary for a UPS (eg solar or DC input), while lacking some features that are more common on UPS (eg companion app to turn your computer off when UPS gets low, although you might be able to rig your own solution)

JoeAltmaier•1h ago
$33 per MWh for solar. What is it for coal or natural gas? Maybe half that?
Panino•1h ago
Why would you think that? Solar and wind are both far cheaper than fossil fuels even ignoring the problems caused by coal and methane.

https://en.wikipedia.org/wiki/Cost_of_electricity_by_source

mikeyouse•35m ago
Fuel cost for gas/coal can be rounded to $2/MWH - so then you need to amortize the cost of the plant over all the energy produced and you get to roughly 2x fuel cost for nat gas plants and 3x - 5x for coal ones. See page 10 here for sensitivity to fuel costs though;

https://www.lazard.com/news-announcements/lazard-releases-20...

fyrn_•57m ago
In the US as of June 2024: Gas peaker plants are: $110-228 And Gas combined cycle: $45-108

PV in the US is also more expensive than globally however: $38-171 for Utility scale with storage, when including subsidies, $60-210 when not.

Coal is so much worse in every cost metric than gas combined cycle it's not worth considering, even leaving the pollution aside.

https://www.energy.gov/sites/default/files/2024-12/34-%20Exh...

xbmcuser•56m ago
$100+ meh for natural gas. Solar and battery is so cheap that arab countries are now building large solar and battery systems to save money instead of burning oil and gas. Where as in the US the other big oil and gas producer wholesale electricity prices for Natural Gas is around $100-150 mwh which is cheaper than coal and the major reason coal got pushed out. Then we have China and India where coal is around $40-50 mwh.

So solar and batteries are now cheaper than all other forms of energy/electricity the only problem is finance for poor countries as you need to spend for all the 15-20 years of electricity in one go where as for coal and gas you will spend the same amount over 10-15 years. For rich countries the problem is mostly protectionism as cheap energy would destroy a lot of wealth of people in power.

toomuchtodo•52m ago
Solar and storage is the cheapest form of power now. Prices for both will continue to decline.

Battery storage hits $65/MWh – a tipping point for solar - https://news.ycombinator.com/item?id=46251705 - December 2025

mullingitover•39m ago
It's already cheaper to demolish an existing coal plant that's already paid for and replace it with solar + battery. Solar and battery brand new buildout, plus their maintenance overhead, dominates coal even when you only count coal's maintenance cost.

People have it in their heads that this is some bleeding heart, don't ruin the planet thing, but it's plain economics. Non-renewable energy is simply inferior, and will only become more so.

aswegs8•1h ago
Am I dumb or does that sentence "Analysis finds anytime electricity from solar available as battery costs plummet" make no sense grammatically?
FfejL•1h ago
The actual headline is:

Analysis finds "anytime electricity" from solar available as battery costs plummet.

Those missing quotes go a long way to making the headline make sense.

k1t•1h ago
I think they meant "viable" instead of "available"
hammock•58m ago
Just read the subhead. It explains everything.

Ember’s report outlines how falling battery capital expenditures and improved performance metrics have lowered the levelized cost of storage, making dispatchable solar a competitive, anytime electricity option globally.

kgwgk•51m ago
I.e. making it a viable option.
malfist•57m ago
Its still really confusing. A better title would be "When solar power from batteries are available, costs plummet"

Or since power has no provenience, "When batteries are available, electricity prices fall"

bee_rider•45m ago
This doesn’t really capture their meaning though. They are describing a change in how the solar generated electricity can be treated due to the changing battery prices.

Arguably your edit is more factual. But part of the job of the title in an editorial like this is to tell you what their perspective is.

fweimer•34m ago
I assume the intended meaning is “reduced battery costs make around-the-clock solar-generated electricity possible”. I don't think it's possible to predict how technical changes in electricity production and storage impact prices.
Angostura•13m ago
"Falling battery costs make electricity from solar viable day and night"
evrimoztamur•51m ago
Baseload, ideally.
pqdbr•46m ago
Came in the comment section looking to see if it was just me. Had to read it 4 times
fweimer•40m ago
I think “anytime electricity” is a noun phrase, and the rest is just the usual headline shortening. So something like this:

(Analysis finds ((anytime electricity) from solar) available) (as (battery costs) plummet)

In the unsuccessful parse, “anytime“ introduces a relative clause.

(Analysis finds [that] (anytime ((electricity from solar) [is] available))) ???

ttul•31m ago
If they were going for maximum confusion, why not write, “Solar battery costs plummet analysis findings back anytime electricity availability”?

Subject (((((Solar battery) costs) plummet) analysis) findings)

Verb [back]

Object (anytime (electricity availability))

Garden path sentence structure trap creation relies on initial word parse error encouragement. Brain pattern recognition system default subject-verb-object order preference exploitation causes early stop interpretation failure.

Solar battery costs plummet phrase acting as complex noun modifier group creates false sentence finish illusion. Real subject findings arrival delay forces mental backtrack restart necessity.

Noun adjunct modifier stack length excess impacts processing speed negatively. Back word function switch from direction noun to support verb finalizes reader confusion state.

We write to be understood. Short sentences and simple words make the truth easy to see.

robwwilliams•6m ago
Brilliant! I would have needed help from Claude to tangle it up so well. But that last lucid sentence is rubbish.
Etheryte•25m ago
Falling battery prices make storing solar electricity for later use economically viable. This means we can use electricity from solar anytime around the clock. Even accounting for the cost of batteries, it's still competitive with other sources of electricity.
jt2190•19m ago
The source report

“How cheap is battery storage?“ https://ember-energy.org/latest-insights/how-cheap-is-batter...

In short: Cheaper batteries plus already cheap solar means that solar is now a cheap source of “anytime electricity”.

neom•3m ago
To me the context string is just a bit...lumpy or something, I don't think it's directly about the grammar. I would have written something more like: a battery costs plummet, analasis finds "anytime electricity" is now available from solar.
state_less•49m ago
The scaling up of battery manufacturing for EVs and now solar storage has lead to prices I would have never imagined I'd see in my lifetime. It's one of the success stories that, having lived through it, has been a real joy.

I know that folks might have been able to point to a graph years ago and said we'd be here eventually, but I had my doubts given the scale required and hacking through all the lobbying efforts we saw against solar/battery. Alas, we made it here!

ak217•14m ago
Alas is right, China is poised to dominate battery, solar, and EV technology and to translate it to military technology as well. Meanwhile the Republicans are blowing up US alliances and sabotaging the battery/EV industrial development policy that was actually making progress in giving the US hope in catching up.
sdoering•3m ago
Same here in Germany/Europe. Our conservatives actually destroyed the solar industry for the third time. Our conservative party has actually destroyed significantly more jobs in solar industries over the last 20 years than it keeps alive with subsidies of 70k€ - 100k€ per person working in that industry (direct and indirect subsidies make the 70 - 100k€ range).

But hey, our populist right tell us, that the subsidies for "green technology" are bad and that we need to get rid of them, because they are making energy so expensive in Germany (cleared of inflation energy costs are lower than 2013, 12 years ago).

But hey - people vote for those parties. Because they know their economics, not like the leftists, who don't.

Germany (or Europe in general) is fucked. In a few years, we will reap what we now sow. And not because of our social systems or immigration, but because our oh so great political leaders are not willing to invest in the future.

alexose•5m ago
In addition to coming so far down in price, it's amazing to me how good the technology has gotten. Batteries that can easily discharge 5C in cold weather, cycle 10000 times, survive harsh conditions with zero maintenance. Panels that last for decades.

Which is why it makes me especially angry that the current US government is throwing away this gift in order to appease a bunch of aging leaders of petro-states. Literally poisoning the world for a 10-15 year giveaway to the richest of the rich.

I take some solace knowing that fossil fuels are now a dead end. And even though certain people are trying to keep the industry going, that end is sooner than ever.

venturecruelty•2m ago
We are the petro-state, and they're our aging leaders.
codersfocus•41m ago
Does anyone know whether it makes sense to setup solar arrays closer to users or to concentrate them in sunny places and send them throughout the country?

e.g. an analysis of whether we should setup all the solar farms in Nevada for the whole country... set them up in the general south and transmit north... or will each state have their own farms?

hn_throwaway_99•37m ago
High voltage transmission lines are really quite efficient, and concentrating generation is usually the right choice.

That said, it doesn't make sense to have just a single place for the entire country, as there are multiple grids in the US (primarily East, West, and Texas), and with very long transmission you can get into phase issues.

estimator7292•27m ago
We don't put all our coal and gas plants out in the desert, they're next to and within our cities.

Physically transporting electricity across distance is very expensive and a not-insignificant amount of power is simply lost on the way. These problems only get worse as the amount of power goes up, and the danger grows very quickly as power goes up. Plus the strategic and logistical benefits of distributed generation.

Simply put you can't centralize generation for the entire country. There's no practical way to actually transport that much power. Not with the technology we have today. If we had high-temperature superconductors then it would make more sense. But with standard metal wires, it's not happening.

aaronblohowiak•25m ago
technically or politically?
ericd•21m ago
Distributed. New transmission lines have big nimby issues, and many existing corridors are already getting overloaded. There are recurring attempts to reform the permitting process (in the last Congress it was called EPRA/energy permitting reform act), but… we’ll see.

Bureaucracy is the main thing holding back clean energy right now, rather than economics. You can see this in how Texas, which has lax grid regulation but isn’t biased towards clean energy has far surpassed CA, which subsidizes and got a big head start, in wind/solar generation in a few years.

wrsh07•18m ago
Casey Handmer is a huge solar bull and his estimate is that solar becomes cheaper than any other form of electricity even when generated from northern states by 2030 (likely sooner)

Iirc solar is meaningfully more efficient (30-50%) in southern states, so it will likely make sense to place energy intensive workloads in locations with more direct sun.

However, the cost of transmitting additional power is interesting and complex. Building out the grid (which runs close to capacity by some metric^) is expensive: transmission lines, transformers or substations, and acquiring land is obvious stuff. Plus the overhead of administration which is significant.

So there's a lot of new behind-the-meter generation (ie electricity that never touches the grid)^^

With all that in mind, I expect energy intensive things will move south (if they have no other constraints. Eg cooling for data centers might be cheaper in northern climes. Some processing will make sense close to where materials are available) But a significant amount of new solar will still be used in northern states because it's going to be extremely cheap to build additional capacity. Especially capacity that is behind-the-meter.

^ but not others! Eg if you're willing to discuss tradeoffs you might find dozens of gw available most of the time https://www.hyperdimensional.co/p/out-of-thin-air

^^ patio11 has a good podcast about this https://www.complexsystemspodcast.com/episodes/the-ai-energy... Disclaimer: my employer apparently sponsored that episode