• efstajas@lemmy.world
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      5 months ago

      If you have a dynamic pricing contract of course you get a discount… If you don’t, you chose not to in return for price stability 🤷

      Though yeah, last time prices went negative in Germany I was still paying 10ct/kWh in just taxes and fees. Would be pretty cool if they’d have paid me for using electricity during that time, but of course that’s not how that works.

    • HereIAm@lemmy.world
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      5 months ago

      Depends on where you live. With my tariff I get paid to use energy during negative price periods.

      Edit: typo.

      • PowerCrazy@lemmy.ml
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        5 months ago

        Yea if only magic physics defying substances existed. Surely capitalism would be able to solve our problems.

        • Gloomy@discuss.tchncs.de
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          5 months ago

          You… You think a battery is a magic physics defying substance?

          I mean, I don’t see capitalism beeing a way to solve the climate crisis and do belive that degrowth is going to happen (by design or desaster), but the success of renewable energy is very much a capitalism success story.

          • Jojo, Lady of the West@lemmy.blahaj.zone
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            5 months ago

            Clearly they only think bigger, better batteries are magic and physics defying. The batteries we have now are the best batteries that physics allows for, and they can’t be made more or bigger because… We already used up all the stuff for them. Yeah, that tracks.

            • PowerCrazy@lemmy.ml
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              5 months ago

              The classic capitalist solution “make it bigger, make more of it, there are absolutely zero limits.”

              Quick question, how big would a battery have to be to power a single city of >1000000 for a single day, show your work.

              • Feathercrown@lemmy.world
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                5 months ago

                “Battery” does not mean “chemical battery”. Gravity batteries, for example, already do provide power to midsized population centers around the world-- they’re called hydroelectric dams.

                • Jojo, Lady of the West@lemmy.blahaj.zone
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                  5 months ago

                  On top of that, it doesn’t have to power the city for a day, it only has to store unused energy produced during off-peak hours while the sun is shining and/or wind is blowing.

                  • Feathercrown@lemmy.world
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                    5 months ago

                    Right-- batteries don’t power cities, they just smooth out the power generation. The size of the battery is determined by the reliability of power generation, desired uptime, etc., not just by the power consumption of the city.

                • PowerCrazy@lemmy.ml
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                  5 months ago

                  “gravity battery” BAHAHAHA. You don’t know shit about shit. How much power does a “gravity battery” store expressed in KWh/Volume. Given that number, how big would this “gravity battery” have to be to power a single city of ~1000000 for 1 day.

                  • Feathercrown@lemmy.world
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                    5 months ago

                    First off, don’t be rude. Second off, bold claim saying I don’t know shit about shit when you don’t know that a gravity battery is measured in mass (or volume, sure) and height, you know, that thing that gravity needs to make stuff move.

                    Edit: Also, batteries don’t directly power cities, they just smooth out power generation, but I’ll show how a large enough battery could provide more than enough power if all other generation went offline and it could charge to full when that power was online.

                    Anyways, I’m too lazy to calculate this myself, but the Hoover Dam website has better data than I do and probably smarter people doing the formulas anyways. It produces 4 billion kWh of power per year on average. The power usage of a city of 1,000,000 people varies based on average headcount of each household and especially by industrial (and commercial) consumption compared to residential consumption, but to take NYC as an example, it uses about 11 million kWh per day, and has a population of about 8 million, so it uses about 1.375 kWh per person per day. Over the course of a year, this means that a city of 1 million people would take 1.375*365*1,000,000 = 500 million kWh for a year. Conclusion: the Hoover Dam, which is a gravity battery, could fully power 8 cities of 1 million people, or almost exactly 1 New York City.

    • Shard@lemmy.world
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      5 months ago

      Thats because the majority of the cost is not in the direct cost of generation but in maintaining the grid. That’s a fixed expense that does not fluctuate and there is no way generation costs will offset maintenance costs.