Not mentioned in the article is that these systems are still illegal in the US.
this post was submitted on 29 Jul 2024
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Not everything in the world should be revolving around your stupid default country
This article is from the New York Times, a prominent US newspaper which writes primarily for a US audience. It's relevant for them to bring it up.
do you know why they're illegal? is there some danger to them?
Individuals owning their own means of energy production is obviously unamerican.
It's a feature of capitalism!
FTA:
The so-called plug-in systems involve routing the direct current generated by the panels to an inverter, which converts it to an alternating current. They can then be plugged into a conventional wall socket to feed power to a home.
So, yeah, almost certainly illegal in pretty much any grid-powered home in the US.
The basic problem is that if the grid power goes down the inverter can back-feed the grid enough to electrocute the people who are working to fix it.
Utilities require an approved isolation system of some kind that prevents that happening. They are pretty strict about this for various other technical and political reasons too, but evidently it is mostly a safety concern.
I've got some good locations at home for panels, and about 500W in panels that I use for camping, but the equipment I'd need to handle easily and safely consuming the power at home is kind of expensive (just running an inverter and a battery for an isolated system is easy enough, I've got all that, but it's not cheap to seamlessly connect it to my home power system). Would love to have a safe and approved system like what is described in the article.
Houses in Europe are connected to the grid too.
These systems are approved in Europe by utilities because they have failsafes implemented to prevent back feeding electricity in the grid.
The fact that these systems are still illegal in the US is a political issue, not a technical one.
Balcony solars are not able to back feed since they need the grid to synchronize, if you want one that is able to work in "island mode" you still need approval from the grid provider/one that isnt connected with the schuko connector.
Because fuck us apparently.
These plugin systems are quite interesting, they allow renters for example to get some benefits of Solar without having to make permanent installs. The systems a lot cheaper than a full setup but obviously don't produce the same amount of power. I first saw them appearing in France and then since Germany changed the law to allow them its good to see it flourishing there too. This isn't going to save the planet but its a little step of improvement.
400 Euro isn't bad for all the fittings and inverter and the big benefit of these DIY systems is you just put them together and connect them to a standard wall socket. Constantly just saves you money on your bills when there is sunshine. Its also not enough power that its worth dealing with export tariffs but in countries where smart meters already exist it could be part of the mix.
You just plug them into an outlet? Is there no safety concern about backfeeding power, especially if someone turns off the breaker and expects a circuit to be de-energized?
They're not supposed to be grid-forming and should turn off if there's no grid voltage. And if you turn off a breaker you should always check that there's no voltage, you might've turned off the wrong breaker.
That's good then. Although I hope they also considered what happens if there's two of them on a circuit, because if the mains power goes off, but there's another panel on the same circuit, they'd each see the other's voltage on the line, right?
And yeah, you should verify that a circuit is de-energized after you flip the breaker, but I've seen both some real weird electrical work, and some electricians who aren't that careful.
They generate no frequency so the situation you fear is not possible.
The panels themselves are DC, but there's an inverter feeding 120V 60Hz (or whatever) into the wall, right?
Yes, but it's a system that is designed to sync with the frequency of whatever other electricity is out there, and it shuts of if the main shuts off. Almost all rooftop systems without a battery in the US are set up the same way.
Still, it's important to check that things you think are disconnected do not have current flowing through them. And this makes it more important.
Why did you ban me form Climate?
Just because I questioned this article? If so, that's fucked up!
I stand by my opinion that combating climate change with consumerism is a bad idea. And you trying to silence that opinion, whether it not it's wrong, is super problematic.
Although I hope they also considered what happens if there's two of them on a circuit
The regulations allow only for one. If you want a bigger install than that you need individual approval I think.
I put a small flexible light weight one up last year. Secured with steel washcloth line (it doesn't have glass or anything, just a plastic sheet with cells on it), the city replaced the meter to account for feeding in (not needed, I work home office and use up all of it in my apartment) cost me 600 or so last year, plugs into regular wall socket and has already lowered consumption by about 1/10th which is a solid chunk of money with current prices. I am very happy I get to do something as a renter, even if it will take years to pay for itself.
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