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Balcony Solar

Balcony Solar

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This week we talk about plug-in power, renewables, and Germany.We also discuss inverters, solar arrays, and microgrids.Recommended Book: Consider This by Chuck PalahnuikTranscriptMost climate scientists and knowledgable folks in adjacent fields will tell you that, as a species, we’re way behind where we need to be if we’re going to avoid a whole lot of negative consequences caused by global climate change.We’ve blazed past a bunch of tipping points already, and while the worst-case scenarios we were worried about a decade ago are no longer likely because of the energy-generation and related changes we’ve made globally, since then, the damage caused up to this point is already doing some pretty bad things to our water cycle and other temperature-regulating systems, and that’s looking like it will get even worse over the next several decades—even if worse no longer means cataclysmic in the sense of ending all life on the planet.That said, even noting that progress has been a lot slower than most experts would prefer, progress is happening in regards to the deployment of renewable energy sources, and in the replacement and retirement of dirty, carbon- and methane-spewing sources, like coal, petroleum, and gas.As of 2026, the global share of total electricity generation, so all electricity produced by all sources for all purposes, is about 33.8% for renewables, marking the first time renewables have been used to produce more than a third of the total electricity produced, globally; that also means renewables have surpassed coal for electricity generation for the first time.While hydro and wind continue to contribute to the growth of renewables deployment and electricity generation, solar power is by far the biggest growth area for renewables right now, and solar, alone, covers 75% of total electricity demand growth in 2025—which means as countries around the world deploy more electricity generation assets to account for electricity demand growth, three-quarters of that demand is being met by solar. And this is notable because typically that kind of demand, the majority of which arises in huge, rapidly scaling countries like China and India, has up till recently been met by the dirtiest of energy production sources, coal.There’s also been a .02% reduction in fossil fuel generation, year-on-year, which is a very small number, but that level of production is massive, and there are a lot of subsidies and other mechanisms that keep fossil fuels flourishing around the world, so every little sliver of fossil fuel energy production reduction is still a pretty significant thing.Many of these renewables-related wins, in recent years, have been attributable to the large-scale installation of solar facilities, backed by massive, utility-scale battery backups, primarily in China.China is by far the largest producer of solar panels and related technologies—Chinese companies produce somewhere between 80-90% of all the key components and perform the same portion of all key manufacturing stages for the global supply chain, while also controlling the vast majority of resources necessary to manufacture solar panels. And it has been on a tear over the past decade or so, installing just a silly amount of solar infrastructure. Which is good, because China is also seeing a lot of growth in energy demand, so if they weren’t deploying that much solar, they would likely be deploying that much coal infrastructure, instead.That said, while huge solar arrays are important to renewables growth, there’s also been a recent boom in smaller-scale solar energy deployment in recent years, especially but not exclusively across Europe. And that’s what I’d like to talk about today: the emergence of so-called ‘balcony solar,’ and what it might mean for the further expansion of solar’s footprint around the world.—In 2025, Utah, which is a deeply Conservative, Republican state, became the first US state to pass a bill that makes it easier to legally install plug-in solar panel systems.As of mid-2026, about 30 states have followed suit, and even more are considering it, laws allowing for the installation of such solar technologies winding their way through legislative bodies on the back of the popularity and seeming no-downsides nature of this tech product category.Plug-in solar, also sometimes called balcony solar or garden solar, is currently most popular in Germany, which is the biggest market for this product right now, with about four million such systems installed as of 2025.To understand the popularity of this type of solar installation, it’s useful to understand that conventional solar installations have typically required a decent amount of electrical surgery to install. They’ve usually involved a large number of panels operating as an array, and that array has produced quite a lot of electricity that then has to be funneled as a direct current either back into the local grid using what amounts to ...
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