‘If 1.5m Germans have them there must be something in it’: how balcony solar is taking off
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Storing something extremely dangerous extremely safely for "some hundreds of thousands of years" doesn't exactly sound cheap, does it?
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I obviously don't consider fossil fuels as an option. And I do doubt that it's cheaper to build a nuclear plant compared do building a coal or gas fired one.
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God, I love living in a nuclear plant evacuation zone
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Infrastructure should be public, with regulated access for wholesale and retail. It works. The grid operator needs to make money for large scale projects like interconnectors, modernising, maintenance and build.
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Hey thank you! I'm definitely saving this off for my future calculations!
You're totally correct about the rest, and I'm now able to roughly see if I should buy a 800 system or two, or theee... Electric hookups included in the calculation of course.
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These plugin systems shut down automatically when there's a power outage. To make sure that they really do shut down when needed, in Belgium only plugin systems that have been approved by the network management organisation may be used. The other countries that allow these probably have similar precautions.
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Read it as germans who are 1.5 meter tall, wondered why them being short is relevant.
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Officially it's allowed after April 17th, but there's already an extensive list of approved devices.
https://www.test-aankoop.be/woning-energie/hernieuwbare-energie/nieuws/plug-and-play-zonnepaneel
There's probably a french version of that article as well, but test- achats/aankoop hasn't made it easy to switch languages
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Thanks.
Going off grid was absolutely a consideration, but only for a very short while. There are too many downsides. We would need twice as much solar capacity, and a way bigger battery, and batteries are still pretty expensive, but even with that, we would still need a generator. And we wouldn't be able to sell surplus energy. It would more than double the cost, and only provide 25% better self sufficiency for the whole year than we have now.
We live in Denmark, and we can risk to have to go through almost all of December with only a few days sun. Running a diesel generator for power would be both noisy and smelly, It would also require more work to maintain, and it would actually cost slightly more to us a generator than to simply buy the electricity from the grid.Remember doubling our capacity will not bring us from 41 to 82% self sufficiency. Because there is some loss in storage, and even double our battery capacity would not be enough to store 48 kWh like we made today in the span of only 7 hours. (Today was the best day of the year yet.
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Even in January on a perfect day, we can make twice what we use, but such days are rare in January. (we use about 15 kWh per day.)The final problem with a generator is that we would never be able to achieve remotely the stability we have with the grid. We've been living here for 6½ year, and the power has only been out once!!!
The problem with making it bigger than we have at all, is that after you've reached a point of above 50% self sufficiency, you are entering the area of diminishing returns quickly. On a yearly basis we are about 72% self sufficient. To reach that extra 22% probably cost 50% extra.
This is if you live as high north as we do, because the extra capacity is only usable in the winter, in the summer it's all surplus, and you get so little for selling the power it's basically irrelevant. There is too much solar now, so when solar panels have high yields, prices often go down to almost zero.
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The relentless march of sustainable cosplay continues. A million Germans clinging to plasticky solar trinkets like rosary beads against energy insecurity—how very on-brand for a nation that dismantled nuclear plants to cozy up with Putin’s pipelines. Nothing screams “green revolution” like propping up coal while bureaucrats hyperventilate over balcony wattage permits.
But sure, let’s pretend these glorified battery chargers absolve collective guilt. Social media’s latest performative ritual—slap a panel on your railing, flood Instagram with hashtags, ignore the 14-month waiting list for certified installers. Peak late-stage decarbonization theater: all aesthetics, no grid.
At least it’s honest. We’ve stopped pretending policy can fix anything. Why demand competent governance when you can DIY your dystopia?
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1.5m Germans are 150cm people !
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Are you under the impression that the people buying solar for themselves are against sustainable energy solutions on a state level?
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Transformers, power lines, roads, trucks, and maintenance teams to move from large scale plants to houses also doesn't grow on trees, but if maintenance in remote places doesn't happen it can burn a lot of them.
Sometimes large scale plants make sense, but as the back up too microgeneration where the costs of infrastructure to move from unpopulated to populus areas make sense.
I am also a fan of less inverted power in microgeneration though. More and more of power usage is DC anyways. The need to convert to AC as much IMHO, but that is my far more radical take
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Both.
The reduction of infrastructure and leveraging existing buildings without reducing their existing utility vs converting a new space to be a dedicated power plant plus the infrastructure to move power from less populus (normal case because the cost of populus land is high due to demand) to more populus space.
I also idealogically support it because it makes more controllable by people and less controlled by an outside entity (a corporation/state).
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i mean, it'll work. You should probably just collectively work together to install a solar array on the roof of the apartment instead, assuming it doesn't already have one.
Granted this is in the EU, so ideal solar tracking is kinda just, fucked. It matters more closer to the equator, because you can get significantly more power from pointing them correctly, and tracking, if you decide to use that.
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This is great for people who live in the middling latitudes.
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Megagermans just sound evil.
And milligermans, well there's a vaccine against that I think.
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a mix of both is good, there's arguments for doing local co-generation. Where you essentially turn a community into it's own power plant, and when you're talking about things like micro inverters, the cost doesnt really change.
Is it more efficient to do it at a utility grid scale? Yes, does that make it overall better? Not really, you still have to deal with grid inefficiencies, and maintenance, and well, you still have to deal with installations, so the cost isn't that significant at the end of the day.
Solar is one of very few renewable energy sources that you can actually locally build and maintain on a small scale, no sense in removing that utility from it, that's part of the reason it's so popular.
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microgeneration purely in DC only really makes sense in stuff like campers and RV's where you're going to be using primarily nearby, low power consumption devices.
AC is still better, plus modern switching technology while still fairly expensive, is considerably more efficient now. If you're doing AC you also get a number of other benefits, notably, literally every existing appliance and device uses and works with AC voltages, the entire standard around electricity and home wiring is based on AC mains, all of the accessible hardware is also produced for AC mains, not that you can't use it for something else, it's just not intended for that.
Certain appliances will use induction motors, and similar other tech (clocks for example, often use the frequency of the power grid to keep time) based directly on the AC sinewave. You could still run them on DC, it's just significantly sillier. Plus transmission efficiency is a BIG loss in DC (even now with modern solid state switching components, it's still just, not ideal), granted thats less of a problem on a micro grid scale, it's still a concern and potential restriction, nothing beats the simplicity and reliability of a simple wire wound iron core transformer. There are a handful of other technical benefits, and drawbacks as well, but fairly minor.
Having a dedicated DC supply side might be nice for a home environment, but the question is what do you standardize on? DC/DC voltage conversion is fairly efficient as it is already. Converting from AC/DC is incredibly easy and not particularly inefficient at lower power consumption, it's more of a problem with higher draw devices. But you can easily get around that by using a higher voltage to convert down from.
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If you generate the power where it is used without pollution, we should.
Generators take space, require maintenance, and have a certain optimal capacity that isn't necessarily hit on a given roof.
For wind energy in particular, the bigger the turbine, the more yield per $ spent. If you go out to Corpus Christi you'll see these enormous turbines - $10M to $50M / ea - that generate on the order of $24 to $75 per MWh, or $.024-.075/kWh. Home wind/solar don't get anywhere close to that.
Prime placement of units, distribution across a wide area, and a degree of storage capacity means you're going to get better and more consistent yield.
