SteveKLord

Thermal insulation is a cornerstone of policies aimed at reducing the high energy consumption for heating and cooling buildings. 1 In many industrialized countries, building energy regulations require new and existing buildings to have insulated walls, floors, and roofs, as well as double- or triple-glazed windows. In cold weather, insulation slows down the heat loss from the interior to the exterior, reducing the energy use of the heating system. In hot weather, insulation delays the transfer of heat from the outside to the inside, thereby reducing the energy consumption of the air conditioning system.

Modern insulation methods involve the permanent addition of non-structural materials with high thermal resistance, such as fiberglass, cellulose, or mineral wool, to the building surfaces. Viewed in a historical context, this approach is unusual and stems from a shift in architectural style. 2 Preindustrial buildings often didn’t require extra insulation because they had a significant amount of thermal mass, which acts as a buffer to outside temperature fluctuations. Additionally, the building materials themselves could have high thermal resistance.

A return to vernacular buildings, which maintain interiors at a comfortable temperature through architectural design rather than energy-intensive technical installations, could significantly reduce energy consumption for heating and cooling. However, it’s not a short-term solution: it would require a large amount of time, money, and energy to replace the existing building stock.

Fortunately, history offers an alternative solution that can be deployed more quickly and with fewer resources: textiles. Before the Industrial Revolution, people added a temporary layer of textile insulation to either the interior or the exterior of a building, depending on the climate and the season. In cold weather, walls, floors, roofs, windows, doors, and furniture were insulated with drapery and carpetry. In hot weather, windows, doors, facades, roofs, courtyards, and streets were shaded by awnings and toldos.

The plunging cost of solar PV and battery storage has opened up a new frontier in the transition to green energy, according to a new report, with cities and industries around the world now able to access low cost, 24-hour solar generation.

According to the UK-based energy think tank Ember, the combined cost of solar and battery storage has fallen 22 per cent in the last year alone (see graph below).

“This is a turning point in the clean energy transition,” says lead analyst Kostansta Rangelova. “Around-the-clock solar is no longer just a technical possibility and distant dream, but an economic reality.

“It unlocks game changing opportunities for energy-hungry industries like data-centres and manufacturing. Solar will be unleashed. The change is new – the costs and quality of grid batteries have improved so much in the last 12 months. Now it’s time for policy and investment to catch up.”

The concept is not entirely new. Some of leading investors, such as the Australian-based Quinbrook Infrastructure Partners, have already identified the combination of solar and battery storage as a winner, particularly for large energy users in Australia.

Solar energy used to be something that only the rich can afford. Even if you wanted to try using more sustainable sources of energy, it wasn’t something easily accessible or affordable. But now, with just a few components and some basic tools, anyone can create a solar-powered generator that provides clean, renewable energy. Whether you want backup power for emergencies, need a portable power source for camping, or simply want to cut down on your electricity costs, a solar generator is a smart investment.

If you’ve ever wondered how you can save money on your energy bills, reduce your impact on the environment, and have a bit of fun building something useful, a DIY solar generator might be just the project for you. Inspired by the same technology NASA uses for its space missions, this solar generator is not only practical but also a fascinating way to bring a little bit of science and innovation to your home. In a video posted on the Concept Crafted Creations, you will be able to follow along if you want to create your own.

Australia’s official renewable energy target is to reach 82 per cent by 2030, a target that will require – given the variability of wind and solar – extended periods when the grid is running on 100 per cent renewables, or as near as dammit.

There are similar targets in Europe, particularly Denmark and Germany, and all eyes are now focused on South Australia, the state which now reaches 100 per cent renewable share nearly every day, and which has a government target of reaching an annual average of 100 per cent “net” renewables by the end of 2027.

Forward-looking: A team of German researchers from Martin Luther University Halle-Wittenberg has unveiled a significant advancement in solar energy technology, revealing a method to dramatically increase the amount of electricity certain materials can generate when exposed to light. Their approach involves stacking ultra-thin layers of different crystals in a precise sequence, resulting in a solar absorber that far outperforms traditional materials.

At the core of this discovery, published in Science Advances, is barium titanate (BaTiO₃), a material known for its ability to convert light into electricity, though not very efficiently on its own.

The scientists found that by embedding thin layers of barium titanate between two other materials – strontium titanate and calcium titanate – they could create a structure that produces significantly more electricity than barium titanate alone, even while using less of it.

VIENNA — At the edge of a wide, grassy park in Vienna, there's a modern building with lots of windows and a sleek wood facade. For the past six years, Sebastian Schublach has lived here with his family in a light-filled four-bedroom apartment on the fourth floor.

Up on the roof, where Schublach can relax in the communal library with a view of the city and park, there are solar panels to reduce climate pollution. There's a rooftop garden full of rosemary — the greenery helps keep the building cool in summer. Thick, insulated walls reduce the need for heating and cooling — Schublach's apartment doesn't even need an air conditioner. "It's not cold in winter times. It's not hot in summer times," Schublach says. "It's very comfortable."

In the United States, high-quality, climate-friendly apartments like this are mostly rare and unaffordable, says Daniel Aldana Cohen, professor of sociology at the University of California, Berkeley and co-director of the think tank the Climate and Community Institute. But in Vienna, sustainable buildings like Schublach's aren't just affordable, they're widespread. Schublach's apartment is what the Viennese call "social housing" — housing that's built or supported by the government. Now this social housing is a key driver of Vienna's ambitious climate action.

South Korea’s recent political shift marks a critical turning point for its energy future, one anchored in pragmatism and strategic economic reasoning rather than ideological preference. The country’s new government has decisively recommitted to renewable energy expansion, sustaining nuclear generation at current levels, and accelerating coal phase-outs, a trajectory that signals a clear recognition of renewable energy’s essential role in the national economic strategy. This policy reset arrives as South Korea, historically reliant on imported fossil fuels for over 90% of its energy needs, seeks urgently to mitigate both geopolitical risks and environmental pressures inherent in its heavy fossil fuel dependency.

Since January, President Donald Trump has taken a sledgehammer to the Biden administration’s efforts to grow America’s clean energy industry. The Trump administration has frozen grants and loans, hollowed out key agencies, and used executive action to stall renewable energy projects and reverse climate policies — often in legally dubious ways. At the same time, citing economic and national security reasons, Trump has sought to advance efforts to produce more critical minerals like lithium in the United States. That is exactly what the emerging lithium-ion battery recycling industry seeks to do, which is why some industry insiders are optimistic about their future under Trump.

Nevertheless, U.S. battery recyclers face uncertainty due to fast-changing tariff policies, the prospect that Biden-era tax credits could be repealed by Congress as it seeks to slash federal spending, and signs that the clean energy manufacturing boom is fading.

Battery recyclers are in “a limbo moment,” said Beatrice Browning, a recycling expert at Benchmark Mineral Intelligence, which conducts market research for companies in the lithium-ion battery supply chain. They’re “waiting to see what the next steps are.”

On May 20, the right-wing organization ADF sued Minnesota over its advocacy for trans rights. ADF argues that allowing trans girls and women in women’s sports discriminates against cis girls and women. ADF, a Project 2025 adviser, has been at the helm of several anti-trans initiatives, its lawyers authoring model bathroom bills that would force trans people into the bathrooms of their assigned sex at birth. In 2025, lawmakers have already passed more than 100 anti-trans bills across the U.S., including 13 bathroom bills.

But where is ADF getting money for its anti-trans advocacy? These days, it's almost impossible to tell due to regulations that allow nonprofits to hide their donors, but one verifiable source is the fossil fuel industry. Between 2013 and 2022, Shell USA Company Foundation donated $58,002 to ADF, per an investigation by the Guardian. Phil Anschutz, a billionaire who built his wealth on fossil fuels and now owns Anschutz Entertainment Group, Inc., which puts on live entertainment events like Coachella, also donated $110,000 to ADF between 2011 and 2013.

ADF isn’t the only anti-trans organization with financial ties to the fossil fuel sector. An independent analysis of 45 right-wing groups advocating against trans rights found that 80% have received donations from fossil fuel companies or billionaires. The analysis, conducted by two independent researchers in 2023 and not peer-reviewed, was shared exclusively with Atmos and HEATED. Through a qualitative search, the researchers identified 45 groups advancing anti-trans lobbying, events, and publications and checked reports about their donor disclosures for fossil fuel funding.

Given fascist, authoritarian takeovers in the US and heightened action against the people by the fascist-in-chief, I offer ways to resist. This is an update of what I sent in a recent newsletter.

Do you, like me, have strong feelings about the technofascist coup that’s in progress? (While this is largely a US-centric post, fascists are rising globally, so this can be broadly relevant.)

My anger competes with grief over what and who we continue to lose. Immigrants to the US and trans people are in the crosshairs. As are forests and natural areas. And anyone who speaks Truth to power.

Back in April, Daniel Hunter offered a good analysis and strategies for action. The analysis in short: they’d love our street actions to turn violent, a good excuse to declare emergency controls. Don’t take the bait. And watch for fascist instigators.

California's solar energy boom is often hailed as a green success story but a new study reveals a murkier reality beneath the sunlit panels. Researchers uncover seven distinct forms of corruption threatening the integrity of the state s clean energy expansion, including favoritism, land grabs, and misleading environmental claims. Perhaps most eyebrow-raising are allegations of romantic entanglements between senior officials and solar lobbyists, blurring the lines between personal influence and public interest. The report paints a picture of a solar sector racing ahead while governance and ethical safeguards fall dangerously behind.

Solar energy has become the #1 source of new electricity generation capacity in the United States in recent years, like in other markets around the world. Solar energy is just cheaper, more resilient, quicker to build, and good for energy independence and energy security.

These solar facts are courtesy of the Solar Energy Industries Association (SEIA)