The hottest Renewables Substack posts right now

And their main takeaways
Category
Top Science Topics

Reading List 03/07/2026

Construction Physics • 12318 implied HN points • 07 Mar 26
đź•ą Technology Renewables
  1. California’s Prop 13 has pushed a record share of home transfers into inheritance—about 18% last year. That makes inheriting a house a major path into homeownership and reduces normal market turnover.
  2. Data centers suddenly switching to backup power can cause rapid drops in electricity demand that threaten grid stability, and operators worry that larger simultaneous disconnects could do serious damage.
  3. Solar is gaining both technological and political momentum—efficiency records and manufacturing are increasingly centered in China while solar finds new allies in U.S. political circles—and at the same time U.S. nuclear safety rules were substantially pared back in a recent rewrite.

Now comes the heat

The Crucial Years • 7892 implied HN points • 13 Mar 26
🌞 Climate & Environment Renewables
  1. A strong "super" El Niño looks likely and, combined with already record-warm oceans and a powerful heat dome, will drive unprecedented heat, worsening droughts, fires, and chaotic weather over the next year.
  2. Weather and water systems are more vulnerable than ever. Forecasting capabilities have been degraded by data cuts just as snowpacks and reservoirs hit record lows, raising the risk of surprise disasters and real shortages.
  3. Energy politics are amplifying the crisis—war and fossil-fuel leverage are driving up prices while utilities and some politicians push back against rooftop solar and climate laws, even as cheap, flexible solar technologies offer a fast path to cleaner, decentralized power.

On Technologies vs. Commodities

Construction Physics • 23383 implied HN points • 29 Jan 26
🌞 Climate & Environment Renewables
  1. Manufactured technologies tend to get cheaper more reliably over time, while commodities can also fall in price but do so less consistently, especially in recent decades.
  2. The price dynamics overlap: commodities face depletion, tradability, and cartel effects, while technologies benefit from learning, scale, and process improvements, yet technologies can hit siting or resource limits and commodities can improve via better extraction methods.
  3. It’s unclear whether commodities follow learning curves because long-run cumulative production data is often missing, so analyzing specific price-driving mechanisms is more useful than relying on a simple technology-vs-commodity split.

Grid Socialism

Doomberg • 7522 implied HN points • 11 Feb 26
🌞 Climate & Environment Renewables
  1. Rapid buildout of intermittent renewables like wind is creating reliability gaps — Finland’s turbines iced up, hydro and nuclear couldn’t fully cover demand, and there isn’t enough battery storage to bridge shortfalls.
  2. The EU is pouring hundreds of billions into high-capacity interconnectors to knit countries into a giant grid so excess renewable output in one place can offset shortages elsewhere.
  3. Linking grids spreads both power and price: imports kept Finland’s lights on but raised Swedish prices, and deeper integration risks making electricity costs more uniform — and higher — across the region.

Surviving on Trump's Dangerous Planet

The Crucial Years • 3408 implied HN points • 28 Feb 26
🌞 Climate & Environment Renewables
  1. Control of oil still drives geopolitics — recent attacks and embargoes raise prices and strengthen the fossil-fuel industry and its political backers.
  2. Small-scale solar, wind and batteries make societies harder to blackmail or bomb. Countries building decentralized renewables — like Cuba, Ukraine and China — are showing that these systems are more resilient than centralized oil infrastructure.
  3. Many leaders are still blocking clean energy and subsidizing fossil fuels, but renewables are spreading anyway through markets, activism and local projects, and public concern about climate is growing.
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An El Niño is brewing

The Crucial Years • 6427 implied HN points • 16 Feb 26
🌞 Climate & Environment Renewables
  1. An El Niño looks likely to form and will push global temperatures to new records because it adds on top of the planet’s steady warming. Scientists warn this surge could raise the world to around 1.7°C above pre‑industrial levels this cycle and hasten hitting 2°C within the next decade or two.
  2. The extra heat will mean more extreme weather—stronger storms, heavier rains and floods, deeper droughts, and bigger wildfires—that will harm people, infrastructure, and ecosystems. That visible jump in warming will also shift politics and public opinion, and could lead to serious debates about risky options like solar geoengineering.
  3. The clean energy transition is gathering pace with expanding renewables, EV adoption, microgrids, and industrial moves to low‑carbon power, showing economic as well as climate benefits. Still, political choices that favor fossil fuels can block or slow this progress, so policy decisions remain crucial.

Will Africa still be energy-poor in 2050?

Sustainability by numbers • 349 implied HN points • 17 Mar 26
🌞 Climate & Environment Renewables
  1. Under mainstream energy scenarios, electricity use per person in Africa will still be very low by 2050, leaving many people unable to power basic appliances or cool their homes.
  2. The key reason is weak economic growth — without stronger GDP and industrial development, electricity demand and access won’t rise much.
  3. Cheaper solar and storage can help lower costs, but they won’t close the gap by themselves; affordable power plus broad economic development are both needed to lift billions out of deep energy poverty.

Sunlight travels 93 million miles to reach the earth

The Crucial Years • 1126 implied HN points • 06 Mar 26
🌞 Climate & Environment Renewables
  1. Sunlight travels about 93 million miles to reach Earth.
  2. None of that sunlight passes through the Strait of Hormuz, so it isn’t tied to shipping lanes or geopolitical chokepoints.
  3. Because sunlight isn’t routed through oil transit routes, solar energy can make our energy supply less dependent on volatile geopolitical hotspots.

Assisted Thinking

Doomberg • 8288 implied HN points • 20 Jan 26
🌞 Climate & Environment Renewables
  1. China relies heavily on coal, with coal making up roughly 58% of its primary energy and the country burning over half of the world’s coal.
  2. Western media often praises China’s climate leadership, but that praise can be misleading because China’s emissions and coal use remain very large and have grown.
  3. Headlines saying renewables have overtaken coal or that China is leading a clean-energy revolution can depend on specific accounting choices and short-term data, so those claims need careful scrutiny against broader energy statistics.

How Reality Destroyed Europe’s Green Energy Dreams

Common Sense with Bari Weiss • 811 implied HN points • 04 Mar 26
🌞 Climate & Environment Renewables
  1. Europe's once-strong push for aggressive net-zero and green energy has fractured. Skyrocketing energy costs and economic realities made those plans hard to sustain.
  2. Recent geopolitical turbulence, especially the war in Iran, has driven up oil and natural gas prices and put extra pressure on European economies and energy policy choices.
  3. Early political enthusiasm for big carbon prices and rapid green transitions is now meeting resistance as voters and governments prioritize affordability and energy security over ambitious climate goals.

Thinking about lying

The Crucial Years • 2939 implied HN points • 02 Feb 26
🌞 Climate & Environment Renewables
  1. The fossil fuel industry knew climate science but chose deception to protect profits, and that long campaign of denial taught political leaders to treat reality as optional and to lie shamelessly.
  2. Independent journalism and a commitment to the truth are essential; supporting trustworthy reporting and refusing to give up are key defenses against steady political falsehoods.
  3. Despite powerful obstruction, the clean energy transition is making real progress — EV adoption, cheaper renewables, local solar and battery projects, and targeted pressure on a concentrated set of polluters mean the fight is winnable.

Just possibly it's the oil?

The Crucial Years • 6407 implied HN points • 03 Jan 26
🌞 Climate & Environment Renewables
  1. Oil’s concentration and value drive conflict and geopolitical control, so reducing dependence on oil would cut a major motive for attacks and imperialism.
  2. Legal and political checks are currently weak against overreach, so solely relying on institutions to prevent aggression is risky.
  3. Decentralized clean energy—like rooftop solar, wind, and EVs with bidirectional charging—can shift power away from fossil-fuel holders and help make peace and energy security more achievable.

Time for some courage in the climate fight too

The Crucial Years • 2471 implied HN points • 27 Jan 26
🌞 Climate & Environment Renewables
  1. Big business and financial leaders have largely pulled back from climate leadership after political pushback, but public funds and big investors could still use their financial power to force change.
  2. Divesting from fossil fuels is both a moral choice and a smart financial move, since renewables and batteries are cheaper and funds that shunned fossil stocks have often seen better returns; staying invested has cost taxpayers billions.
  3. Scientists warn the window to avoid dangerous warming is smaller than we thought and tipping points are real, so governments must speed up the clean-energy shift by scaling renewables, storage, and other clean technologies already proving they work.

Greenland has a 'vital strategic asset'

The Crucial Years • 4115 implied HN points • 06 Jan 26
🌞 Climate & Environment Renewables
  1. Greenland's massive ice sheet is its most important strategic asset because if it melts it could raise global sea levels by many feet and disrupt ocean currents, changing climates and flooding coastlines worldwide.
  2. Talk of seizing Greenland is a dangerous, colonial-minded idea that would violate Greenlanders' sovereignty, strain international alliances, and overlooks that most Greenlanders oppose joining the U.S.; Greenland has already banned new oil exploration and relies largely on renewables.
  3. Practical climate action works and matters: community organizing, clean transport like e-bikes, and renewable projects (from floating offshore solar to solar on reclaimed Superfund land) can help, but policy choices — for example on energy-efficiency standards for manufactured homes — will determine who benefits and who pays.

Pretend you're running for Congress

The Crucial Years • 1783 implied HN points • 12 Jan 26
🌞 Climate & Environment Renewables
  1. Keep the energy message simple: talk about affordability and the basic promise that clean energy is cheap, creates jobs, and can lower electric bills, using clear examples people understand.
  2. Policy is currently increasing electricity demand (think data centers and AI) while blocking cheap wind and solar, which drives up prices and effectively makes working families subsidize fossil fuel interests.
  3. Clean energy is winning globally — faster EV adoption, cheaper and more efficient solar like perovskites, big green finance, and new recycling tech mean we should accelerate renewables and protect public health rules now.

How Batteries Are Making the Electrical Grid More Reliable

Construction Physics • 18999 implied HN points • 19 Jun 25
đź•ą Technology Renewables
  1. Batteries help keep the electrical grid stable by balancing the supply and demand of electricity. They can quickly charge and discharge, making it easier to match electricity use with what power plants produce.
  2. The use of batteries in places like California and Texas has grown a lot, making them a key part of the power grid. They help prevent outages and reduce electricity costs by storing cheap energy for when it's needed later.
  3. Batteries can also improve grid reliability by providing fast response to sudden changes in power demand. This is done using advanced technology that allows them to stabilize electricity flow without relying on traditional power plants.

Pirates of the Anthropocene

The Crucial Years • 2600 implied HN points • 11 Dec 25
🌞 Climate & Environment Renewables
  1. Oil still shapes geopolitics and can drive coercive, even pirate-like actions as states treat fossil fuels as concentrated sources of power and wealth.
  2. Moving to solar and wind would decentralize energy and make conflicts over resource locations far less likely, so speeding the clean-energy transition also undermines authoritarian, resource-driven power.
  3. The energy transition is making progress—court wins for offshore wind, battery recycling advances, and China's lead—but it faces big obstacles from political rollbacks, EPA denial of climate science, booming energy-hungry datacenters, and worsening extreme weather.

The Exception That Proves the Rule

Doomberg • 8484 implied HN points • 08 Aug 25
🌞 Climate & Environment Renewables
  1. Australia has a lot of natural resources, like coal and natural gas, which gives it a strong position in global energy markets.
  2. The country is trying to move to renewable energy sources like wind and solar, but this shift is causing serious problems for its electricity grid.
  3. As Australia adds more renewable energy, its electricity costs are rising and the system is becoming less reliable, showing the challenges of relying too much on intermittent power sources.

Tale of Two Cities

The Crucial Years • 1743 implied HN points • 26 Nov 25
🌞 Climate & Environment Renewables
  1. Extreme climate impacts are happening now and escalating — cities can face Day Zero water crises, Arctic "zombie" fires are releasing ancient carbon, and ecosystems are under growing stress.
  2. Economic and political levers matter a lot — what big investors, pension funds, and city officials do can speed up or slow down the fossil-fuel era, making divestment and policy choices powerful tools.
  3. The solution requires rapid, large-scale industrial action — massive clean energy buildout and material transitions are needed fast, while rollbacks, local opposition, and risky techno-fixes could derail progress.

The Blackouts Are Coming

OK Doomer • 265 implied HN points • 11 Feb 26
🌞 Climate & Environment Renewables
  1. Blackouts are becoming far more likely as data center growth, heatwaves, and storms strain the grid, so planning for outages now is important.
  2. If someone in your household relies on power for medical devices or heat/cooling, focus on a backup system that powers critical loads only, not the whole house.
  3. Don’t trust cheap DIY kits or affiliate hype — work with a professional installer who can choose reliable equipment, provide warranties, and safely size the system.

Dunkelflauten Clusters (aka Winter)

Gordian Knot News • 168 implied HN points • 16 Feb 26
🌞 Climate & Environment Renewables
  1. Dunkelflauten—multi-day clusters of very low wind and solar—can last weeks and stress the grid far more than average capacity factors indicate.
  2. Detailed hour-by-hour, multi-year weather modeling shows a pure wind/solar/battery/hydrogen system for Germany needs massive overbuild and nearly 50,000 GWh of H2 storage, causing huge curtailment and very high electricity costs.
  3. Real-world constraints like missing north–south transmission, low gas reserves, and storage limits make heavy reliance on intermittents and LNG/hydrogen risky, while a nuclear-centered plan would likely be cheaper and cleaner.

Renewable Energy Won

Erik Explores • 737 implied HN points • 21 Dec 25
🌞 Climate & Environment Renewables
  1. Wind and solar paired with batteries are now cheaper than coal and can deliver reliable 24/7 power. The economics mean the energy debate over renewables versus fossil fuels is effectively over.
  2. Practical challenges remain, like upgrading grids, training installers, and storing energy across seasons, but these are solvable with investment and various solutions. Options include overbuilding renewables, heat pumps, hydrogen or ammonia, pumped hydro, and novel carriers like rechargeable metal powders.
  3. Political and expert skeptics who said renewables couldn’t scale or would need permanent subsidies were proven wrong as costs fell and deployment surged globally. Nuclear remains expensive and slower to replace aging plants, so renewables are expanding even in traditionally nuclear countries.

What happened on energy and climate in China this year?

Sustainability by numbers • 475 implied HN points • 05 Dec 25
🌞 Climate & Environment Renewables
  1. China’s total CO2 emissions were basically flat this year, showing almost no growth despite rising energy demand.
  2. A huge buildout of renewables and nuclear pushed electricity emissions down and rapid EV adoption cut oil use in transport, backed by a massive rollout of chargers.
  3. Industrial emissions rose and new coal plants are still being built, which offsets some gains and makes the timing of an emissions peak uncertain.

An Illustrated Guide to Emergency Solar

OK Doomer • 208 implied HN points • 30 Dec 25
đź•ą Technology Renewables
  1. A portable setup with folding panels and a solar generator is an affordable, safer alternative to rooftop solar for home or apartment emergency power.
  2. Wiring panels in parallel makes each panel work independently, so one panel failing won’t shut down the whole system.
  3. Build with basic safety gear like inline fuses and plan for upgrades, such as higher-grade LiFePO4 batteries, to increase capacity and reliability later.

Three threats to the age of energy abundance

Noahpinion • 7470 implied HN points • 14 Mar 24
đź•ą Technology Renewables
  1. The world is experiencing a new age of energy abundance due to advancements in solar power, batteries, and other renewable technologies, leading to increased productivity and numerous possibilities for innovation.
  2. Potential threats to this energy abundance come from the increasing demand for electricity driven by new digital technologies like Bitcoin and AI, as well as challenges in connecting new power sources to the U.S. electrical grid.
  3. Electricity demand in the U.S. is unexpectedly rising again after years of being flat, creating a need for better preparation and planning to meet the surging demand.

Focus on European power reserves: part 1 - FCR

GEM Energy Analytics • 279 implied HN points • 31 May 24
đź•ą Technology Renewables
  1. Frequency Containment Reserves (FCR) are the fastest type of power reserves in Europe, helping to keep the electricity grid stable as more renewable energy sources are integrated.
  2. FCR prices can vary significantly and are influenced by solar energy production, with periods of high solar generation leading to higher FCR prices due to a lack of flexible energy sources.
  3. The rise of large batteries in the market is changing FCR dynamics, and while they add flexibility, they can also lead to price fluctuations depending on the availability of renewable energy.

The Great Reallocation

Renewable Revolution • 799 implied HN points • 12 Jan 24
🌞 Climate & Environment Renewables
  1. Renewable energy doesn't actually need a huge increase in investment compared to fossil fuels. As fossil fuel spending goes down, the overall increase in spending is only about 2% a year.
  2. Investing in renewables is expected to grow significantly, doubling in the coming years while fossil fuel investments will decline. This shift is possible because renewable technology costs are dropping.
  3. The transition to a cleaner energy system is doable without needing massive funds. The main challenge is making sure that investments focus on developing the right infrastructure and policies.

Top Links 752 Phases of economic history/ascendant economic ideologies. China's renewables megabases & how banana bunches are organized.

Chartbook • 600 implied HN points • 28 May 25
đź’° Finance Renewables
  1. There are 752 important phases in economic history that show how economies have changed over time.
  2. China is creating large renewable energy projects, which could have a big impact on its energy future.
  3. An interesting way to understand economics is to look at how bananas are organized, showing how we can learn from everyday things.

The Emergence of Duck Curves in Europe

GEM Energy Analytics • 319 implied HN points • 26 Feb 24
🌞 Climate & Environment Renewables
  1. Solar energy in Europe has grown a lot in recent years. By the end of 2024, solar power capacity will nearly double, helping to meet electricity needs.
  2. Duck curves are becoming more common, showing that solar energy creates cheaper electricity prices in the afternoon. This trend is seen in countries like Greece, Germany, and Spain.
  3. The impact of solar energy isn't just in Europe; places like Australia are seeing similar effects. As solar use increases, it changes the price dynamics in electricity markets.

Updates on Spain (as of April 2024)

GEM Energy Analytics • 179 implied HN points • 22 Apr 24
🌞 Climate & Environment Renewables
  1. Spain is currently experiencing negative prices in the energy market, meaning they pay less than zero for electricity. This is a first for the country and has happened multiple times in April 2024.
  2. There is a record amount of energy stored in Spanish hydro reservoirs, which is leading to very low electricity prices. These reservoirs have more energy than has been seen in the past ten years.
  3. The capture rates for solar energy are extremely low, with some months showing just 20%. This indicates that solar power is not being used efficiently, especially when prices are so low.

Bulls and bears: a nuclear update

Everything is Light • 373 implied HN points • 26 Jan 24
🌍 World Politics Renewables
  1. Energy security is a global concern and nuclear energy is crucial for societal progress.
  2. Many countries are investing in expanding nuclear energy generation, with significant projects underway in Asia, Europe, and North America.
  3. Despite past reservations, some nations like Japan and Italy are reconsidering nuclear power, while others like Denmark and Singapore are exploring options.

What about the cost?

Everything is Light • 668 implied HN points • 01 Apr 23
🌞 Climate & Environment Renewables
  1. Comparing the costs of different energy sources is more complex than just looking at the upfront costs of individual components.
  2. The Levelised Cost of Energy (LCOE) metric is not sufficient for assessing cost-effectiveness because it overlooks various factors like system costs and reliability.
  3. It's essential to consider the true costs of energy sources, including factors like backup power needs, disposal costs, and environmental impacts, to make informed and effective energy policy decisions.

Heat maps on Germany: renewables and prices

GEM Energy Analytics • 239 implied HN points • 15 Mar 24
🌞 Climate & Environment Renewables
  1. Germany's renewable energy sources like solar and wind are working well together, especially during the winter. This means Germany can rely on both types of energy to help meet their needs.
  2. Heat maps show that solar energy has a big impact on electricity prices, especially during sunny afternoons in the spring and summer. When there's lots of solar power, prices can drop.
  3. Comparing Germany with France on energy prices, we see Germany benefits from more solar energy during the day. This can lead to lower prices in Germany, especially in the afternoon.

Appitalism

¡Do Not Panic! • 471 implied HN points • 24 Apr 23
🌞 Climate & Environment Renewables
  1. Progress should focus on fundamental advancements, like clean water and mass vaccination programs.
  2. Relying on one-and-done technological fixes in crises may lead to temporary relief but not long-term solutions.
  3. Sustainable progress requires system change that respects nature and natural limits, not just technological tweaks.

It's the economic growth, stupid

¡Do Not Panic! • 452 implied HN points • 02 Jun 23
🌞 Climate & Environment Renewables
  1. Continued energy growth, irrespective of the source, could lead to catastrophic levels of waste heat.
  2. Global economic growth at 2.3% annually may hit a saturation point in 200 years due to resource constraints.
  3. Physical limits to growth, driven by raw physics, will eventually necessitate radical changes to current economic, political, and social systems.

Some early lessons of 2024 in the energy sector

Jérôme à Paris • 510 implied HN points • 24 Dec 24
🌞 Climate & Environment Renewables
  1. Solar energy is growing really fast, leading to more electricity than we often need, causing prices to drop sometimes.
  2. Energy storage is becoming super important to handle all the extra solar power, but keeping up with the growth is tricky.
  3. Despite talk of a big rise in energy demand, actual usage is mostly stable or even going down in many places, especially in Europe.

An introduction to (green) Hydrogen

GEM Energy Analytics • 299 implied HN points • 24 Oct 23
🌞 Climate & Environment Renewables
  1. Hydrogen is seen as important for reducing carbon emissions, but it's not a complete solution. It can help in specific tough areas but isn't the only answer.
  2. Producing hydrogen currently causes pollution because most of it is made from natural gas or coal. Only a tiny bit comes from clean methods like renewable energy.
  3. Green hydrogen is expensive to produce, and its high costs mean it will be limited. It's better used in areas where alternatives like electricity don't fit, not for everyday home heating or personal cars.

The Solar Buildout

Syncretica • 314 implied HN points • 25 Sep 23
🔬 Science Renewables
  1. Building solar power in regions with high sun hours is more economical and efficient.
  2. Solar power can be strategically placed based on demand, like in coastal regions with high air conditioning demand.
  3. Transitioning to solar power impacts traditional energy sources like gas and coal, potentially leading to energy independence.