Tootfinder

California joined 19 other states
on July 16 to take a swing at a Trump administration delay tactic
in approving onshore wind energy projects.
In light of California’s goal for its energy to be 100 percent carbon-free by 2045,
wind plays a large part.
On a hot and humid afternoon like this Friday’s, renewable energy is supplying 70 percent of the 34-gigawatt demand.
Wind makes up 11 percent of that carbon-free renewable energy.
Any project that uses…

California AG Seeks to Intervene in Lawsuit Against Trump Administration over Onshore Wind Projects
Projects nationwide are “frozen” while the Department of Defense conducts “further agency coordination,” said Attorney General Rob Bonta.

Octopus Heat-pump Journey - Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat

Octopus Heat-pump Journey
Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat #defossilisation

VCs are throwing money at a literal perpetual motion machine.
This is not even an exaggeration.
https://arstechnica.com/science/2026/05/casimir-force-co-opted-to-generate-free-energy-midichlorians-not-included/

Dutch consumer electronics retailer and energy supplier Coolblue is adding a new 'free' to its range (following 'free washing' and 'free drying'): 'free dishwashing', available every day between 12:00 and 15:00 with connected Bosch/Siemens dishwashers.
https://www.coolblue.nl/en…

Octopus Heat-pump Journey - Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat

Octopus Heat-pump Journey
Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat #defossilisation

Rarefaction-induced inflation and similarity breakdown of hypersonic bow shocks over a circular cylinder
Ehsan Roohi, Ahmad Shoja-Sani
https://arxiv.org/abs/2605.17099 https://arxiv.org/pdf/2605.17099 https://arxiv.org/html/2605.17099
arXiv:2605.17099v1 Announce Type: new
Abstract: Rarefied hypersonic bow shocks over blunt bodies inflate as the Knudsen number increases, but it remains unclear whether this inflation is a simple shift and broadening of one common shock layer or a multi-scale change of the macroscopic and internal-energy fields. We address this question using direct simulation Monte Carlo (DSMC) data for Mach-10 flow over a circular cylinder in argon and nitrogen over \(Kn_\infty \approx 0.01\)--\(1\), together with a Mach-number sweep at \(Kn_\infty=0.01\). At low rarefaction, a ray-based density-gradient ridge gives a reproducible bow-shock location and agrees with an independent schlieren-based shock-wave-detection method. As \(Kn_\infty\) increases, this ridge is replaced by a broad kinetic compression layer, so the high-Knudsen cases are analysed using profile-based standoff and thickness metrics rather than by imposing a visual shock line. The Knudsen- and Mach-number sweeps separate two mechanisms. At fixed \(M_\infty\), the continuum normal-shock density ratio provides a useful low-rarefaction reference compression scale, whereas the measured standoff growth is governed primarily by the kinetic mean free path; the effective density thickness shows an intermediate minimum before increasing in the diffuse regime. At fixed low \(Kn_\infty\), changing \(M_\infty\) mainly changes compression strength and curvature, preserving a coherent attached-layer structure. Density-registered profiles and shock-attached proper orthogonal decomposition (POD) show that, within the present maximum-density-gradient registration, density becomes nearly rank one, whereas Mach number and thermal variables retain independent modal content. Rarefied bow-shock inflation is therefore a coupled compression--relaxation process, not a single-scale rescaling of a continuum-like shock.
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Scientists built a battery-free device that turns sunlight into fuel #energy

Scientists built a battery-free device that turns sunlight into fuel
Scientists have developed an artificial photosynthesis system that essentially regulates itself, eliminating the need for batteries used in many current designs. The key innovation is an electrolyzer that automatically adapts to changing sunlight by altering its electrical properties as it heats up. This keeps solar fuel production more stable while reducing cost and complexity.

Scientists just cracked a major solar recycling challenge. A new laser technique cleanly removes backsheets from old solar panels without damaging the valuable silicon and glass underneath.
The method costs just $0.22 per panel and preserves components for reuse—a game-changer for making solar truly circular.

Continuous-wave infrared laser technology enables damage-free backsheet removal in end-of-life solar modules
U.S. researchers have developed an IR-CW laser-based method to remove backsheets from end-of-life silicon solar modules without damaging the glass or wafers, using controlled heating of the silicon–EVA interface through the front glass. The process enables clean mechanical delamination with preserved device performance and offers a lower-energy, lower-cost alternative to conventional thermal or chemical recycling methods.

Today, I got an error message from a Microsoft @outlook.com mail address. They had noted that thousands of messages were coming from the https://proton.me domain lately ;)

Proton: Privacy by default
Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy.

Octopus Heat-pump Journey - Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat

Octopus Heat-pump Journey
Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat #defossilisation

Sources: SoftBank plans to make lithium- and cobalt-free data center batteries in Japan as soon as FY2027, as Japan tries to cut its reliance on Chinese metals (Natsuki Yamamoto/Nikkei Asia)
https://asia.nikkei.com/business/energy/so…

SoftBank aims to make data center batteries without lithium, cobalt
Next-generation power cells are part of Japanese group's bet on AI infrastructure

Eco Puzzler: 0-GHG Energy - For those on their way to mastering engineering... How to create a 100% Greenhouse Gas Free Energy System for the UK? #ecoEngineering #renewables -

Eco Puzzler: 0-GHG Energy
For those on their way to mastering engineering... How to create a 100% Greenhouse Gas Free Energy System for the UK? #ecoEngineering #renewables

The absolute waste of time and knowledge and energy caused by smart people "building" shit with and for LLMs.
Smart people giving their work away for free to motherfuckers like altman and amodei and musk and jfc i hate this timeline.

The ancient Middle-East had a solution for surviving the heat without chillers: windcatchers (and the related solar chimneys). Such things should be employed for first-tier cooling where possible to reduce energy demand, leaving chillers to take up the slack (until we figure out how to get infinity gigawatts of free power into every house, at which point we should just capture all the excess heat from running chillers and use the Seebeck effect to convert it into electricity to power a giant…

Beginning next week, most Australians will get free electricity for three hours every afternoon.
That's what happens when you build out wind, sun, and batteries.
As the cost of clean energy keeps plummeting, it is more and more obvious how much money we waste, and how much financial risk we incur, by staying with fossil fuel.

How about Free? Is that affordable enough for you?
The latest on energy, climate and affordability

Octopus Heat-pump Journey - Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat

Octopus Heat-pump Journey
Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat #defossilisation

“How about Free? Is that affordable enough for you?
Beginning next week, Australians across a huge swath of the continent will begin getting three free hours of electricity every afternoon—to charge their cars, runs their dishwashers, fill up a storage battery to run the house at night.”
https://

How about Free? Is that affordable enough for you?
The latest on energy, climate and affordability

"So instead of eliminating (opens in new tab) 118.3 million permits (opens in new tab), the Air Resources Board will distribute them for free to companies on the condition that they pledge to invest in clean energy projects."
So how will the pledges be enforced, I wonder? I've seen over 30 years of "Here's how we will go green" "commitments" from companies like BP (remember Beyond Petroleum), Shell, BHP Biliton, etc - all reneged
So how wil…

A California environmental board voted to cut $202M from SF’s eco-friendly transit
Muni stands to lose hundreds of millions with changes to a state program that funds public transportation by charging firms for permits to emit carbon.

"So instead of eliminating (opens in new tab) 118.3 million permits (opens in new tab), the Air Resources Board will distribute them for free to companies on the condition that they pledge to invest in clean energy projects."
So how will the pledges be enforced, I wonder? I've seen over 30 years of "Here's how we will go green" "commitments" from companies like BP (remember Beyond Petroleum), Shell, BHP Biliton, etc - all reneged
So how wil…

A California environmental board voted to cut $202M from SF’s eco-friendly transit
Muni stands to lose hundreds of millions with changes to a state program that funds public transportation by charging firms for permits to emit carbon.

"A solar-powered charging station in central Cuba brings life to a darkened island"
#Cuba #SolarPower #Energy #Renewables

A solar-powered charging station in Cuba brings life to a darkened island
A free, solar-powered charging station, or “solinera” as it’s known, has opened in Cuba’s central region. It has become a lifeline for people on an island with chronic blackouts and a severe gas shortage stemming from a U.S. energy blockade. Some flock from towns miles away for their first chance to bring equipment back to life. Cubans are driving up to the station on rechargeable motorcycles while others walk to the station hauling rice cookers and other kitchen equipment to make a mea…

Octopus Heat-pump Journey - Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat

Octopus Heat-pump Journey
Via quote and survey and negotiation to keeping us warm fossil-free #heatPump #DHW #spaceHeat #defossilisation

At Cornell University in upstate New York, researchers are testing how a deep geothermal system can work
far from the tectonic boundaries and volcanoes that have long defined where distributing their energy is even viable.  
By tapping into the planet's internal warmth, the project, known as
"Earth Source Heat",
could supply the 2,300-acre
(931-hectare) campus in Ithaca with fossil fuel-free heat to help the university become carbon neutral by 2035.…

How geothermal energy could power US homes
Advancements in geothermal systems and sustained political support in the US provide an opportunity for this clean energy industry to scale.

Crosslisted article(s) found for math.AP. https://arxiv.org/list/math.AP/new
[1/1]:
- Gradient descent at the Edge of Stability: free energy model and kinetic description of the two-l...
Antonin Chodron de Courcel

Lanczos Method for QRPA Strength Functions in Atomic Nuclei
Dong Min Roh, Chao Yang, Jonathan Engel, Matthew L. Dai
https://arxiv.org/abs/2607.01114 https://arxiv.org/pdf/2607.01114 https://arxiv.org/html/2607.01114
arXiv:2607.01114v1 Announce Type: new
Abstract: We present a symmetric Lanczos method for computing charge-changing QRPA strength functions in atomic nuclei. Starting from the finite-amplitude-method formulation of the QRPA linear-response problem, we derive equivalent spectral representations and, in the real case, a reduced eigenvalue problem involving the matrix products $MK$ and $KM$, where $M\equiv A B$ and $K\equiv A-B$ are formed from the usual QRPA matrices $A$ and $B$. The resulting formulation enables a matrix-free Lanczos approximation of the Lorentzian-smeared strength function over a broad energy interval from a single Krylov run, in contrast to conventional frequency-by-frequency response calculations. Numerical tests for $^{112}$Sn and $^{150}$Nd first show that GMRES reproduces the converged iterative FAM strength profiles while requiring fewer iterations. Using GMRES as the frequency-by-frequency reference, we then show that the Lanczos approximation reproduces the same strength profiles with reduced overall cost. These results indicate that symmetric Lanczos projection provides an efficient and accurate approach for QRPA strength-function calculations when spectral information is required over an extended frequency range.
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Disregarding training, the cost of revenue includes buying hardware and energy of course. Almost no sales/marketing necessary for Anthropic, but still. Development of Claude Code itself is also not for free.
Are there any estimates on these margins out there. I think I remember Philipp Klöckner estimating about 60% in one of the recent Doppelgänger episodes.

The 2040 milestones that Europe must meet to achieve climate-neutrality by 2050 #Europe …

The 2040 milestones that Europe must meet to achieve climate-neutrality by 2050
Energy, transport, heating and industrial transition: A major modeling study now provides EU-wide guidance with high sector detail on the required pace of transition to fossil-free technologies. The conclusion is encouraging: the EU Green Deal is realistic, and it will ultimately make the continent stronger and more independent from oil and gas crises.

Belgians are coining German terms for any situation where renewable energy supply falls short of demand. The latest: ‘kühlkraftskrise’: hot days, with demand for air conditioning extending into the evening peak
Feel free to comment with your own German term to describe a power issue
https://www.

Hitte en draaiende airco's leiden morgenavond tot 'kühlkraftskrise' met piek in elektriciteitsprijzen | VRT NWS Nieuws
Airco's die overuren maken, leiden morgenavond tot een piek in de elektriciteitsprijzen. De prijs voor de levering van elektriciteit op de groothandelsmarkt stijgt vanaf iets voor 20 uur tot 22 uur tot stroomprijzen boven de 300 euro voor een megawattuur, met een piek van meer dan 445 euro om 20.30 uur.

Real progress, happening now:
Texas solar just beat coal generation—a first.
Australia added 400,000 home batteries (11.2 GWh) in 10 months, turning rooftops into grid support.
Factories can now use a free tool to calculate the real value of energy upgrades and secure funding.
Momentum is building. Get weekly climate solutions in your inbox:

Weekly Climate Solutions Digest
Welcome This week arrives with the quiet thrill of thresholds crossed. In Texas, the sun takes the lead as solar generation surpasses coal for the first time. In Australia, 400,000 home batteries find their place behind everyday walls in only ten months, a pattern of resilience drawn roof by

Improving Ensemble CAPE Forecasts with a Diffusion Model Incorporating Aerosol Information
Zachary James, Joseph Guinness, Arthur DeGaetano
https://arxiv.org/abs/2605.24009 https://arxiv.org/pdf/2605.24009 https://arxiv.org/html/2605.24009
arXiv:2605.24009v1 Announce Type: new
Abstract: Convective available potential energy (CAPE) is an important variable for forecasting severe weather and understanding deep convection and precipitation. The latest versions of the Global Forecast System (GFS) and related Global Ensemble Forecast System (GEFS) have exhibited a bias towards underestimating CAPE values during the summertime. We train an artificial intelligence (AI) diffusion model to improve the skill and uncertainty quantification of afternoon 6-hour lead time ensemble forecasts over the United States. Our model takes a GFS CAPE forecast as input and outputs an ensemble that significantly outperforms both GFS and GEFS 6-hour forecasts on root mean square error, continuous ranked probability score, and Brier score. We propose a two-stage training pipeline to leverage both a larger historical GFS forecast dataset and a smaller historical GEFS dataset, despite the two using initialization and parameterization schemes that vary over time. We also show that classifier-free guidance can be used to control the skill and spread of the forecasts. We then demonstrate the versatility of our framework by adding aerosol optical depths (AODs) of black carbon, organic carbon, dust, sea salt, and sulfates as additional input features. Aerosols can invigorate or suppress convection depending on atmospheric conditions. Our AI models effectively incorporate aerosols to produce improved CAPE forecasts. We interpret the model components by using permutation feature importance to rank the influence of the different AODs and find that black carbon, organic carbon, and sulfate aerosols have a greater impact on the model's CAPE predictions than sea salt and dust aerosols.
toXiv_bot_toot

A Positron Range Correction with Texture Preservation Framework in PET Imaging
Nerea Encina-Baranda, Yifan Zheng, Jorge Cabello, Robert. J. Paneque-Yunta, Cindy. M. Solano-Cordero, Alejandro Lopez-Montes, Maurizio Conti, Joaquin. L. Herraiz
https://arxiv.org/abs/2606.23100 https://arxiv.org/pdf/2606.23100 https://arxiv.org/html/2606.23100
arXiv:2606.23100v1 Announce Type: new
Abstract: Positron range (PR) blurring is a fundamental resolution limitation in PET imaging with high-energy positron emitters such as 82Rb, causing contrast loss and spill-out effects across heterogeneous tissue interfaces. We propose PRC-TP, a positron range correction (PRC) framework with explicit texture preservation that decouples deterministic resolution recovery from stochastic texture restoration. A nnFormer-based neural network (NN) was trained on patient-derived Monte Carlo simulations to map PR-degraded 82Rb reconstructions to PR-free references using attenuation maps as anatomical context. However, this NN also significantly removed the noise in the images, which could impact some texture analysis methods or make the images look unrealistic. An auxiliary Noise2Noise model estimates that smoothing effect, enabling texture extraction and transfer to the PR-corrected prediction through Model-consistent Texture Re-Injection (MTRI). In simulated patients, PRC-TP preserved contrast recovery close to ground truth (GT) (98.96-99.04%) while restoring noise and CNR closer to the reference. The function-based MTRI formulation achieved near unity global texture amplitude agreement with GT (0.997 /- 0.011), reducing the input texture amplitude bias (0.951 /- 0.011). Radiomics analysis showed improved agreement with GT across texture-sensitive feature families. A clinical 82Rb evaluation showed trends consistent with simulations, including comparable contrast-ratio increase (10.18% vs. 10.99%) and restoration of texture suppressed by PRC. These results support PRC-TP as a practical framework for resolution recovery with acquisition-consistent texture preservation in PET imaging.
Submitted to IEEE TRPMS.
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This week: thresholds crossed.
Texas solar generation just surpassed coal for the first time.
Australia installed 400,000 home batteries in 10 months—11.2 GWh of residential storage backing up rooftop solar.
A free JUSTIFI tool now helps factories model the full value of energy upgrades to unlock financing.
Progress is landing. Sign up for the weekly digest:

The physics of AI weather models
George Craig, Tobias Selz, Matthias Beylich, Kirsten I. Tempest
https://arxiv.org/abs/2605.23778 https://arxiv.org/pdf/2605.23778 https://arxiv.org/html/2605.23778
arXiv:2605.23778v1 Announce Type: new
Abstract: Could it be that AI weather models are solving physical equations, although they may not be the equations used by conventional NWP models? We compute correlations of forecast skill and Centered Kernel Alignment, providing evidence that different AI weather models represent the atmosphere in similar ways, despite differences in architecture and capacity. We argue that the architecture and training of the AI models constrains the form of the physical laws that they might simulate. In particular, we propose that the models implement a particle description of the atmosphere, where the latent variables at each mesh point correspond to the position of a particle in the high dimensional latent space. We hypothesize that the movement of the particles follows a gradient flow in the latent space towards a minimum of a learned free energy functional. Analysis of the GraphCast and Aurora models show that they make changes on large spatial scales in the early processor layers and move to smaller scale with increasing layer depth, consistent with the gradient flow hypothesis.
toXiv_bot_toot