There’s a typo in the title. If you go back to the original source (in french), they actually retain 79,5 % of their original efficiency, so even better than the article’s title would have you believe.
People seem to be angry at you for not knowing how the French count. My condolences. I found it funny tho. Have un upvote
Well, I DO know how the French count and compared to English it IS highly confusing. You can hardly convince me that saying “Four times twenty and ten” is as straight forward as saying “Nine tens”.
And just to be clear: I’m not some Yankee or Brit with a superiority complex, no, I am German, and we have our own shitty version of this: Instead of moving along the digits from highest to lowest, as in “Four hundreds and two tens and nine”, we do “Four hundred and nine and two tens”.
Soixante-quinze virgule neuf vs soixante-dix-neuf virgule cinq.
Easy peasy!
Edit: it wasn’t easy peasy.
It supposedly comes from originaly counting in base 20 ( a.k.a : vigesimal system) in some proto-european language. There are traces of it in breton, albanese, basque and danish for example. Even in english, there is a reminiscence of vigesimal, in the “score”, see for example Lincoln’s Gettysburg Address which famously starts with : “Fourscore and seven years ago…”, meaning 87 years ago.
As a frenchman who always found quatre-vingt weird but never bothered to find out why, thanks :)
No you can’t, because the source has written it in the usual hindu-arabic numerals as 79,5 and not as “soixante-dix-neuf virgule cinq”, you don’t need to pronounce the numerals to copy them.
Careful using the word efficiency there, as it has a different meaning when talking about solar panels - it indicates how much energy the panel can extract from the light hitting it. The best modern panels you can buy are below 25% efficient, and since these are from the 90s they were probably about half that when new.
Wow, imagine where we’d be if Oil and Gas hadn’t convinced almost everyone that solar was never going to work well.
Imagine where we’d be if people didn’t automatically think nuclear power=Homer Simpson
Is it too much to ask for people to not get their political opinions from cartoons?
The great thing about nuclear power is that the real cost only comes after the power has been generated. How do you store the spent fuel cells and what do you do with the reactor when it can’t be used anymore. Just before that happens you spin the plant into its own company. When that company goes bankrupt the state needs to cover the cost, as it isn’t an option to just leave it out in the open.
Privatise profit communalism cost.
Here’s all of Switzerland’s high level nuclear waste for the last 45 years. It solid pellets. You could fit the entire world’s US’ waste on a football field.
It’s not the greatest challenge mankind have faced.
It’s not that difficult to store it’s just a rock. You just pop it in a sealed casket, put it underground, mark the location as do not enter and then forget about it. Hardly the greatest of economic challenges.
Anyway you’re assuming that we won’t have a way of recycling it in the future and there’s increasing evidence that we will be able to pretty soon.
That too along with 3MI, and decades of negative propaganda from the fossil fuel industry.
Imagine where we’d be if leftists embraced nuclear power instead of killing it off everywhere they could.
basically exactly the same situation as we’re in now
You think if we take away 50 years of burning fossil fuels we’d be in “the same situation as we’re in now”?? Wtf are you smoking?
Uranium price has being multiplied by 7 in 2007, and France’s electricity, which were 70-80% nuclear at the time, didn’t see any increase in price. Uranium price is definitely not driving electricity price, because nuclear use so little resources and fuel, that’s one of its main appeal.
And 60+ years of french nuclear produced a 15 meters-wide cube of high level waste. This is what it looks like . Does that looks like some unsolvable issue to you?
No, because until we solve the storage issues with electricity. You need a reliable baseline power source in the grid. Solar has 0% cost effectiveness at night. Nuclear is 100 times more environmentally friendly than coal. Even with the long term waste storage issues.
Here in Italy, the only parties that seem to be favorable to nuclear are right-wing.
And of course, they got elected and didn’t actually do anything towards it.
Never trust right-wingers to do literally anything.
If a right wing party promises to take all the money from the rich and redistribute it to the poor, they’re lying.
If a right wing party promises to invest in public transit, they’re lying.
If a right wing party promises to pass a law enshrining LGBTQ rights, they’re lying.
They’re just a bunch of fucking liars, all they exist for is to make rich people richer.
I’d like to specifically blame the vocal greens and not left or center left people in general.
Me too. Fuck the Greens. Joke political party in so many ways. Even if I lived under a system where First Past the Post voting wasn’t the norm, I’d be looking for parties other than the Greens.
I thought that solar panels that old performed much worse or stopped working. Especially considering where the tech was in the 1990s.
I thought that solar panels that old performed much worse or stopped working. Especially considering where the tech was in the 1990s.
“performed much worse” is compared to today’s manufactured panels. As an example, a 100w panel in 1992 was likely around 12% efficient. This means “of all the light energy hitting the full panel under perfect light and temperature conditions”, 12% of that energy is converted to electricity and would produce 100w. Compare this to a middle-of-the-road panel you’d buy for your house today the efficiency is 21%. Both the old and the new panel’s efficiency will go down over the years.
What the article is talking about is how much of the original efficiency is retained over the years in real world tests. Lets say we have a 1992 100w panel from my example above at 12% efficiency. That means under the best possible conditions it would generate 100w. Because of age, the article notes that efficiency has degrade to produce 79.5% of its original rating. Meaning this 1992 100w panel today would generate 79.5w. That’s still pretty darn good and useful!
One other point I see I left out was physical size of panel as related to efficiency of converting light to electricity and the reason that 2024’s 22% efficiency is so important over 1992’s 12%. The 2024 100w panel will be about half the size of the 1992 100w panel. This is important because space to put panels (and cost per panel) are large factors in being able to install solar. So you’d be able to install many more 2024 100w panels in the same space as 1992 100w panels.
They work fine, just not at full capacity. Financing and payback calculations tend to assume they’ll be replaced after 30 years, but that’s just guesses made by accountants, not reality.
Similar holds for EV or phone batteries. They usually don’t suddenly die, but lose more and more health over time. Realistically, you have to set a threshold, where you call it no longer useful.
If the life expectancy was 80%, then we’ve passed it and they are due for replacement. If it was 70% the they still have years of useful life.
It’s probably one of those two. For phones, I replace batteries when health drops to 80%, because I spend too much of my life online. Also, I’m probably giving my phone to my kid about then, so they deserve a fresh battery. I have kept phone batteries down to about 70% life, but then it usually doesn’t last the day and I’m carrying portable chargers everywhere
I haven’t had an EV long enough but I believe the typical battery warranty is defined like that: not just that it’ll work for 10 years, but that it will still be at least 70% health after ten years
As far as I know that’s nothing to write home about, monocrystaline solar panels get like ~30 years dropping down to 80% and then slowly begin to fail from there. I’m far from an expert, but my understanding is this is the norm and that if we found out they weren’t lasting this long then people would be getting worried about a messed up cost calculous.
It’s funny how all the FUD idiots say that solar panels will wind up in the landfill and shit like that
It’s a stupid argument against solar power, but it is a legitimate argument against cheap and poorly-constructed solar panels that do not have the same longevity as the ones built in the 90s.
The one’s made now have plenty of longevity. They don’t base the replacement time on when they actually go bad, and as long as they’re not abused or get hit by bowling ball-sized hail or something, they’ll keep producing some kind of power for a long time. It’s just that for the space they take up, it may be worthwhile to replace them.
Same with EV batteries. They might have limited range after 10 years, but they could still be useful for things like home backup power without having to do a whole recycling job.
But that’s the problem. Early adopters are starting to see the performance drops and are just replacing their equipment, and we don’t have a proper reuse pathway for a lot of it. We should prepare a plan for panel (and battery) repurposing to keep plastic and metals out of landfills. Recycling alone isn’t enough.
Again, not a reason not to produce or adopt solar power and electric cars, but it is a legitimate second-level concern.
That’s the tricky part with dismissing these concerns outright. Conservatives are not arguing in good faith, and take a kernel of truth surrounded by a mountain of bullshit. We don’t want to overcorrect and ignore the problems, because that just fuels the bullshit arguments.
Is there a problem with the market being flooded with cheap not very good solar panels? Every single panel I looked at to put on my roof have all been of the highest quality I’ve not seen anyone try and hawk anything substandard.
Unless of course they’re lying about what panels they’re using but realistically I can’t see that lasting for very long.
Yes, we do have that problem, but it’s not the panels anyone puts on a roof. It’s the cheap plastic shit manufacturers put on disposable consumer devices like pathway lighting or portable chargers.
I wouldn’t put that cheap shit on my roof, but as solar adoption increases, capitalists are gonna capitalize.
Just read to the top comment saying it’s profitable to replace them anyway.
