Live data from Hacker News

Japan unveils first solar super-panel

japanenergyevent.com

1–10 of 43 posts

Re: Japan unveils first solar super-panel

#3
> Japan unveils world’s first solar super-panel: More powerful than 20 nuclear reactors

> Under its revised energy plan, the Ministry of Industry now prioritizes PSCs on Section 0 of its plan wherein Japan aims to develop PSC sections generating 20 gigawatts of electricity equivalent to 20 nuclear reactors by fiscal 2040.

Wtf is this headline. Why are journalists doing this shit.

Re: Japan unveils first solar super-panel

#4
I like solar, but this is a press release with almost zero details. Not a product with an efficiency rating and price tag.

Perovskites: non-silicon based semiconductors, in theory much cheaper for solar panels, in practice have lifetime issues.

Re: Japan unveils first solar super-panel

#5
post #3

> Japan unveils world’s first solar super-panel: More powerful than 20 nuclear reactors > Under its revised energy plan, the Ministry of Industry now prioritizes PSCs on Section 0 of its plan wherein Japan aims to develop PSC sections generating 20 gigawatts of electricity equivalent to 20 nuclear reactors by fiscal 2040. Wtf is this headline. Why are journalists doing this shit.

Press release, innit. Ministry of Industry releases press statement, gets almost automatically copy-pasted into various news feeds. Costs basically nothing to publish.

Re: Japan unveils first solar super-panel

#6
post #3

> Japan unveils world’s first solar super-panel: More powerful than 20 nuclear reactors > Under its revised energy plan, the Ministry of Industry now prioritizes PSCs on Section 0 of its plan wherein Japan aims to develop PSC sections generating 20 gigawatts of electricity equivalent to 20 nuclear reactors by fiscal 2040. Wtf is this headline. Why are journalists doing this shit.

They aren’t. This isn’t a news site, it’s a press release aggregator.

Re: Japan unveils first solar super-panel

#8
This article is a bad rewrite of this one from a month ago:

https://www.ecoticias.com/en/japan-super-solar-panel/12474/

> Scientists in Japan have been discussing the possibility of using a material called perovskite for solar panels

> The perovskite tandem cell has a theoretical efficiency limit of 43 per cent, while the silicon-based cell has a theoretical efficiency limit of 29 percent. It is speculated that these solar panels will be able to produce 20 gigawatts of electricity by 2040

> Under Section 0 of Japan’s revised energy plan, the Ministry of Industry prioritises the use of perovskite solar cells over the less efficient silicon-based solar cells of yore.

> Japanese company, Sekisui Chemical Co., with the help of the Japanese government, is now working towards developing advanced perovskite solar cells for circulation in the global market in the 2030s.

Re: Japan unveils first solar super-panel

#9
> At the center of this strategy is Japan’s position as the second-largest iodine producer in the world, a necessary ingredient in the manufacturing of perovskite solar cells.

Perovskites are a type of crystalline material, [most common are] methylammonium lead iodide perovskite (MAPbI3).. researchers have found that gaseous iodine produced by MAPbI3 make them inherently unstable.. and may not be a fixable issue.

[2017] https://www.asianscientist.com/2017/01/tech/stability-iodine...

Re: Japan unveils first solar super-panel

#10
> This makes traditional silicon-based panels quite impractical in countries that are densely populated, like Japan, when only large spaces can accommodate them.

Bullshit. Japan is full of homes with silicon-based panels on their roofs and they work quite well. See this neighborhood in Ota City/Gunma for example (use satellite view).

https://maps.app.goo.gl/7Xbi28BNuHSuV4wt7

This is a neighborhood full of people who work at the local Subaru factory who IIRC got a special deal on rooftop panels, but rooftop PV is still not unusual in Japan as a whole.

Post reply on HN