• B16_BR0TH3R@lemmy.world
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    3 months ago

    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?

    • Blackmist@feddit.uk
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      3 months ago

      Sure, but for all the times my electricity goes negative for half an hour, the monthly bill indicates that is vastly outweighed by all the times that it isn’t.

    • EmperorHenry@discuss.tchncs.de
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      3 months ago

      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.

      Speaking as a flashlight enthusiast…there’s many different ways to get a constant and consistent current. Sure we’d need to scale it up from a pocket-sized device to a whole fucking power grid, but with a big enough driver with the right arrangement of capacitors and all that, you’d easily be able to get a totally consistent current out of wind or solar

      • untorquer@lemmy.world
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        3 months ago

        Having knowledge in power electronics i can confidently say the DC output of solar is easily and regularly inverted in phase with grid. In fact, DC is often used for undersea cables switching AC to dc then back to AC, All at extremely high voltage and varying demand(up yo 600kV/600MW but varying by installation).

        Wind turbines go online after the blades start spinning and connect to the grid in the same way as any other generator, controlled by internal electronics. Power is regulated through blade feathering and can be turned off as supply exceeds demand. This, other than for maintenance reasons, is why you might see one turbine spinning while the next is standing still. This capability actually means the grid is MORE stable with wind power.

        Any further fluctuation is managed in the same way as conventional power generation.

    • uis@lemm.ee
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      3 months ago

      Just have few percent of spare capacity. If suddenly it will become too sunny, you can just disconnect solar cells. If not sunny enough, then connect them back.

      Obviously I’m talking only about day - the only time when solar panel output can fluctuate.

    • tweeks@feddit.nl
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      3 months ago

      Why isn’t this as easy as storing some of that excess energy in a home battery and letting the rest down in a wire into the ground? Then if it’s smart enough it could only give back energy when needed.

      • untorquer@lemmy.world
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        3 months ago

        The easiest solution is to send the power somewhere else where it can offset the use of fossil fuels. This solution is fraught with political hurdles, subject to market forces (due to privatization) and often grid compatability issues(looking at you Texas). It is, however, a time tested and common method for mitigating excess production.

      • B16_BR0TH3R@lemmy.world
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        3 months ago

        Well, that’s what they’re doing some places. The batteries assets are not in private homes usually though, they’re by themself or run by power-consuming industries. Batteries are expensive though, and they degrade quickly if you use them wrong. In the EU, ENTSO-E defines the market rules, trade systems and messaging systems that energy companies and asset owners play by. Sometimes the revenue-generating asset is a battery, sometimes it’s a hot water boiler, wind park, factory, hydro plant etc.

    • booly@sh.itjust.works
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      3 months ago

      This whole thread has way too many people who see the price as some kind of made up number that dictates how people behave, rather than recognizing that the price is a signal about the availability of useful real-world resources.

      Even if the prices were strictly mandated by a centrally planned tariff that kept the same price throughout the day, every day, we’d still have the engineering challenge of how to match the energy fed into the grid versus taken out of the grid.

      The prices are just a reflection of that technical issue, so solving it still needs to be done.

    • imgcat@lemmy.ml
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      3 months 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.