this post was submitted on 02 Oct 2024
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[–] NutWrench 15 points 2 days ago

"For years, mankind has yearned to destroy the Sun." - CM Burns.

[–] [email protected] 23 points 2 days ago (2 children)

The real issue isn't the overproduction per se, but that we (globally speaking) don't have enough cheap scalable responsive distributed storage. I'm writing this from a privileged position since Switzerland has loads of dams and can pump water during such peaks. But it's clear that's not the solution everywhere. I hope a good cheap mass producible battery tech with less rare earth metal requirements comes along soon.

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[–] EnderWiggin 7 points 2 days ago (2 children)

That's not at all what MIT is talking about here. This goes into detail around the challenges tied in rolling out grid scale solar in a way that aligns with supply and demand curves, and how to make sure we're able to capture overproduction so that we can use it when not enough is being produced. It's a complex shift to work out in our over 100+ year grid production structure, and has been an ongoing discussion across the energy sector. But you know...memes and shit.

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[–] [email protected] 225 points 4 days ago (27 children)

From a grid stability point, you can't produce more than is used, else you get higher frequencies and/or voltages until the automatics shut down. It's already a somewhat frequent occurence in germany for the grid operator to shut down big solar plants during peak hours because they produce way more power than they can dump (because of low demand or the infrastructure limiting transfer to somewhere else)

Negative prices are the grid operator encouraging more demand so it can balance out the increased production.

[–] kippinitreal 87 points 3 days ago (2 children)

Spot on! I hoped this comment would be higher! The main problem isn't corps not making money, but grid stability due to unreliability of renewables.

To be fair, the original tweet is kinda shit to begin with. They've unnecessarily assigned monetary value to a purely engineering (physics?) problem.

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[–] B16_BR0TH3R 62 points 3 days ago* (last edited 3 days ago) (32 children)

This is idiotic. The fact is your electricity transmission system operator has to pay a lot of money to keep the grid stable at 50 or 60Hz or your electronics would fry. With wind and especially with solar power, the variable output is always pushing the frequency one way or the other, and that creates a great need for costly balancing services. Negative pricing is an example of such a balancing service. Sounds good, but for how long do you think your electricity company can keep on paying you to consume power?

[–] [email protected] 1 points 1 day ago

pay a lot of money to keep the grid stable at 50 or 60Hz or your electronics would fry

Absolutely not. Please don't make things up.

[–] Kimano 18 points 3 days ago (20 children)

People also don't realize that too much power is just as bad as too little, worse in fact. There's always useful power sinks: pumped hydro, batteries, thermal storage, but these are not infinite.

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[–] [email protected] 10 points 2 days ago (15 children)

of course it's a furry shitposting about it.

They aren't wrong though, storage technology is only starting to come to market in significant enough capacity to be beneficial.

And for storage plants to be financially viable energy costs during the day need to be really cheap, so they can raise them at night and make a significant enough profit to break even.

[–] [email protected] 9 points 2 days ago (1 children)

Solar generation is kinda saving our asses here in Ukraine though, and was even more in the summer. So I guess all you need for solar to be viable is to have most of your other power sources to get bombed

[–] [email protected] 2 points 2 days ago

this is actually something that still fascinates me. The fact that i can just buy a market accessible product, point it towards the sun, and i just get electricity is fucking insane to me.

We truly live in the best timeline.

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[–] bitjunkie 75 points 3 days ago (2 children)

Literal free goddamn energy from the sky and these greedy fucks are going to burn the world down because they can't flip it for a buck

[–] scutiger 25 points 3 days ago (23 children)

It sounds dumb, but because you can't turn off solar power, if it produces more then you need, you have to use it somehow or it can damage equipment. Hence the driving prices into negative territory. It's a technical problem more than it is a financial one.

[–] calcopiritus 28 points 3 days ago (2 children)

It is a financial problem. Technically you can just cover the solar panels. But that's not good financially.

[–] mohammed_alibi 18 points 3 days ago* (last edited 3 days ago) (9 children)

Your "technically you can" is actually a huge logistical nightmare to implement.

Having electricity rates go really low is intended to incentivize people or companies to sink the excess energy to wherever they can. And also to discourage producers to produce more at that hour, if they are able to.

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[–] Tudsamfa 14 points 2 days ago (2 children)

Before commenting, you should know there are 2 types of solar panels:

  • the ones owned by people (which may or may not feed into the grid)
  • the ones owned by corporations

The article is probably about the 2nd kind (if you can only sell energy when there is a surplus, your company will fail), while the twitter user makes it seem like the 1st kind was meant. We probably need to built more of both types. Identify what type the other commenters are talking about before getting in any arguments here.

[–] Enekk 4 points 2 days ago

You have also made a good argument for socialized energy production. Any time you run into these situations where the optimal solution for a good society requires and is anti-profit, that's a good place for socialized ownership.

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[–] [email protected] 92 points 3 days ago (32 children)

If only there were some way to take energy made from sunshine and store it in some form for later. Like in a battery. Or as heat. Or in a flywheel. Or just use the energy for something we'd really like to do as cheaply as possible. Like sequester CO2. Or desalinate water. Or run industries that would otherwise use natural gas.

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[–] [email protected] 42 points 3 days ago (5 children)

The "problem" of negative energy costs is easy to solve, but quite costly.

Build water desalination/carbon capture and storage/hydrogen generation plants that only run when the price goes below 0; even though these are very energy intensive, they would help stabilize the grid.

Then build more solar; you want to try to have the daytime price stay in the negative as often as possible.

[–] RoidingOldMan 24 points 3 days ago (2 children)

The solution we're using instead of course, instead of all that environment crap you suggested, is running huge crypto farms only during the hours when the energy is in surplus.

[–] [email protected] 19 points 3 days ago (3 children)

To be fair; this is a valid use case.

If you are a solar power producer; rather than offering your energy at -ve rates; run a crypto farm when the output is too high. This is far better than running the same farm on coal.

But it would be better going into something useful.

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[–] [email protected] 53 points 3 days ago

This reminds me of a quote (that probably isn't real) from Westinghouse to Tesla in regard to wireless energy transmission he was trying to create.

"This is wonderful, but where would we put the meter!?"

[–] [email protected] 73 points 3 days ago (9 children)

In this thread: a bunch of armchair energy scientists who think they've solved the energy storage problem all on their own.

[–] Delphia 38 points 3 days ago (7 children)

Theres tons of ways that people with even a little brains could figure out, the problem is often cost or feasability.

A big burried water tank in my yard could be heated during the day and used to warm the house via underfloor heating at night, could do the reverse with chilled water in the middle of summer plumbed to an air recirculator with a heat exchanger. Its really simple engineering but expensive to implement.

I think an awful lot of people just dont understand the sheer scale of a lot of these problems, not the fundamentals.

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[–] dubious 32 points 3 days ago (13 children)

it's long past time we took businessman out of control and replaced them with scientists.

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[–] [email protected] 42 points 3 days ago* (last edited 3 days ago) (3 children)

Didn't China have a community use lots of solar and they ended up with such a glut of excess power that they didn't know what to do with it?

All communities should have that. Electricity should be free and it would be plausible to make it free. Except for maintenance costs, but that would be peanuts compared to what we pay now.

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[–] zxqwas 47 points 3 days ago (34 children)

This is a real problem for renewables.

You don't get paid when the sun shines, and you don't get paid for when it does not.

You had to pay for building the solar panels and maintaining them. Corporate greed aside none sane would like their tax money either to be spent on producing electricity when it's not needed.

Next step for renewables must be storage that is cheap enough for it to beat having fossil fuel on standby.

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[–] [email protected] 10 points 3 days ago (4 children)

Nonsense. Just build a Dyson sphere around it and be the sole owner of the entire star's energy.

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[–] [email protected] 31 points 3 days ago (5 children)

Build big batteries on the grid get the solar in the middle of the day and release the engery back into it a 17:00 when everyone gets home and puts on the shower and kettle at the same time

[–] UnderpantsWeevil 27 points 3 days ago (3 children)

Sounds like Communism to me. That system killed 100 gorillion people.

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[–] [email protected] 38 points 4 days ago (19 children)

So what they are saying is that our current financial system is too focused on short term gains to cope with short term losses?

Sigh, when I grew up, I was allways taught to save money so that I have a buffer to fall back on. This concept seems to have completely gone out the window for busniesses lately.

I dislike the talk about how capitalism is bad as a general concept, but when seeing stuff like this I do agree with it in parts.

Ok, so let's solve the issue.

There is too much electricity, so generating power to transmit to the network will cost us money.

This has an easy solution, just don't transmit it to the network.

Build a battery facility where you store the power instead, infact if the price of electricity is negative, use the power on the grid and charge your batteries as well, I mean, when the electricity cost is negative, you are being paid to consume power.

Then when the sun goes down, and the electricity price goes up, you sell the charge you have in the batteries.

Depending on your location you could even set up a pumped storage system, where instead of batteries getting charged, you use the cheap excess energy to pump a resarvoir full of water, and release it when you need the power.

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[–] Aceticon 17 points 3 days ago (5 children)

The real special bit is that this crap isn't coming from, say Harvard, who one expects is all about business, but MIT which is supposed to be about Science and Engineering.

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