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Brightband emerges from stealth to commercialize AI-weather forecasting.
The weather has never been hotter.
The past few years have seen a boom in the weather prediction industry, with AI-based weather models from the likes of Google DeepMind, Huawei, and Nvidia consistently outperforming traditional models. Most of that work has been research-oriented, but today the startup Brightband emerged from stealth with $10 million in Series A funding and a unique plan to commercialize generative AI weather modeling. Instead of trying to go up against Weather.com, Brightband is tailoring models to specific industries such as insurance, finance, agriculture, energy, and transportation. The round was led by Prelude Ventures.
Weather forecasting has traditionally been the domain of the public sector, with the most widely used models coming from the U.S. National Weather Service and the European Center for Medium-Range Weather Forecasts. Brightband’s CEO Julian Green told me that private companies haven’t been able to break in “because it has cost so much to have billion dollar supercomputers,” which are required to run today’s so-called “numerical” weather models.
These models rely on complex atmospheric equations based on the laws of physics to predict future weather patterns, and because of their computational intensity, are usually only updated four times daily. It’s possible then that AI-based weather prediction could thus actually reduce energy demand — because while it takes a lot of energy to train an AI model, after that’s done, generating forecasts is simple. “So instead of six hours to have a forecast, it takes under a second. Instead of using a billion dollar supercomputer, you’re using a laptop,” Green told me.
AI models like Brightband’s are trained on decades worth of past weather data, and when fed a snapshot of current conditions, can predict what will come next, much like ChatGPT does with text. “Think about the weather AI prediction problem as predicting the next frame in a radar sequence,” Green told me.
He said that customizing forecasts for particular industries will also be as simple as querying a large language model. A wind farm operator could, for example, “just take an attached file of historical wind energy production, and throw it in there and say, hey, tell me what the wind energy is going to be like next week.” Likewise folks in the aviation industry could have the model tell them if their plane’s wings are likely to ice up, utilities could get detailed insight into expected energy demand and generation, and finance companies could get up-to-the-minute information about weather-sensitive commodities. Previously, companies would’ve had to build their own forecasting teams or hire third-party advisors to get such specific predictions.
Brightband wants to further differentiate itself from the types of models that tech companies have already built by using only raw data inputs to generate its forecasts, from sources such as satellites, weather balloons, and radar systems. Perhaps surprisingly, this is not the way that most models currently work. Because there are data gaps, such as over oceans and in the developing world, the datasets used to train today’s AI weather models, Green explained, “smear the available data over a three-dimensional grid of the globe,” diluting the accuracy of both the real-time weather and presumably the resulting forecasts.
It’s hard to say how much more accurate using only raw data inputs will be, because “that’s what nobody has done yet,” Green told me. Data gaps are still an issue of course, but Green told me that Brightband’s approach will also allow the company to better analyze when and where filling these gaps would add the most value.
Brightband says it hopes to publish a paper by year’s end with an open-source version of its forecast model, alongside evaluation tools to assess its performance.
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The nonprofit laid off 36 employees, or 28% of its headcount.
The Trump administration’s funding freeze has hit the leading electrification nonprofit Rewiring America, which announced Thursday that it will be cutting its workforce by 28%, or 36 employees. In a letter to the team, the organization’s cofounder and CEO Ari Matusiak placed the blame squarely on the Trump administration’s attempts to claw back billions in funding allocated through the Greenhouse Gas Reduction Fund.
“The volatility we face is not something we created: it is being directed at us,” Matusiak wrote in his public letter to employees. Along with a group of four other housing, climate, and community organizations, collectively known as Power Forward Communities, Rewiring America was the recipient of a $2 billion GGRF grant last April to help decarbonize American homes.
Now, the future of that funding is being held up in court. GGRF funds have been frozen since mid-February as Lee Zeldin’s Environmental Protection Agency has tried to rescind $20 billion of the program’s $27 billion total funding, an effort that a federal judge blocked in March. While that judge, Tanya S. Chutkan, called the EPA’s actions “arbitrary and capricious,” for now the money remains locked up in a Citibank account. This has wreaked havoc on organizations such as Rewiring America, which structured projects and staffing decisions around the grants.
“Since February, we have been unable to access our competitively and lawfully awarded grant dollars,” Matusiak wrote in a LinkedIn post on Thursday. “We have been the subject of baseless and defamatory attacks. We are facing purposeful volatility designed to prevent us from fulfilling our obligations and from delivering lower energy costs and cheaper electricity to millions of American households across the country.”
Matusiak wrote that while “Rewiring America is not going anywhere,” the organization is planning to address said volatility by tightening its focus on working with states to lower electricity costs, building a digital marketplace for households to access electric upgrades, and courting investment from third parties such as hyperscale cloud service providers, utilities, and manufacturers. Matusiak also said Rewiring America will be restructured “into a tighter formation,” such that it can continue to operate even if the GGRF funding never comes through.
Power Forward Communities is also continuing to fight for its money in court. Right there with it are the Climate United Fund and the Coalition for Green Capital, which were awarded nearly $7 billion and $5 billion, respectively, through the GGRF.
What specific teams within Rewiring America are being hit by these layoffs isn’t yet clear, though presumably everyone let go has already been notified. As the announcement went live Thursday afternoon, it stated that employees “will receive an email within the next few minutes informing you of whether your role has been impacted.”
“These are volatile and challenging times,” Matusiak wrote on LinkedIn. “It remains on all of us to create a better world we can all share. More so than ever.”
A battle ostensibly over endangered shrimp in Kentucky
A national park is fighting a large-scale solar farm over potential impacts to an endangered shrimp – what appears to be the first real instance of a federal entity fighting a solar project under the Trump administration.
At issue is Geenex Solar’s 100-megawatt Wood Duck solar project in Barren County, Kentucky, which would be sited in the watershed of Mammoth Cave National Park. In a letter sent to Kentucky power regulators in April, park superintendent Barclay Trimble claimed the National Park Service is opposing the project because Geenex did not sufficiently answer questions about “irreversible harm” it could potentially pose to an endangered shrimp that lives in “cave streams fed by surface water from this solar project.”
Trimble wrote these frustrations boiled after “multiple attempts to have a dialogue” with Geenex “over the past several months” about whether battery storage would exist at the site, what sorts of batteries would be used, and to what extent leak prevention would be considered in development of the Wood Duck project.
“The NPS is choosing to speak out in opposition of this project and requesting the board to consider environmental protection of these endangered species when debating the merits of this project,” stated the letter. “We look forward to working with the Board to ensure clean water in our national park for the safety of protection of endangered species.”
On first blush, this letter looks like normal government environmental stewardship. It’s true the cave shrimp’s population decline is likely the result of pollution into these streams, according to NPS data. And it was written by career officials at the National Park Service, not political personnel.
But there’s a few things that are odd about this situation and there’s reason to believe this may be the start of a shift in federal policy direction towards a more critical view of solar energy’s environmental impacts.
First off, Geenex has told local media that batteries are not part of the project and that “several voicemails have been exchanged” between the company and representatives of the national park, a sign that the company and the park have not directly spoken on this matter. That’s nothing like the sort of communication breakdown described in the letter. Then there’s a few things about this letter that ring strange, including the fact Fish and Wildlife Service – not the Park Service – ordinarily weighs in on endangered species impacts, and there’s a contradiction in referencing the Endangered Species Act at a time when the Trump administration is trying to significantly pare back application of the statute in the name of a faster permitting process. All of this reminds me of the Trump administration’s attempts to supposedly protect endangered whales by stopping offshore wind projects.
I don’t know whether this solar farm’s construction will indeed impact wildlife in the surrounding area. Perhaps it may. But the letter strikes me as fascinating regardless, given the myriad other ways federal agencies – including the Park Service – are standing down from stringent environmental protection enforcement under Trump 2.0.
Notably, I reviewed the other public comments filed against the project and they cite a litany of other reasons – but also state that because the county itself has no local zoning ordinance, there’s no way for local residents or municipalities opposed to the project to really stop it. Heatmap Pro predicts that local residents would be particularly sensitive to projects taking up farmland and — you guessed it — harming wildlife.
Barren County is in the process of developing a restrictive ordinance in the wake of this project, but it won’t apply to Wood Duck. So opponents’ best shot at stopping this project – which will otherwise be online as soon as next year – might be relying on the Park Service to intervene.
And more on the week’s most important conflicts around renewable energy.
1. Dukes County, Massachusetts – The Supreme Court for the second time declined to take up a legal challenge to the Vineyard Wind offshore project, indicating that anti-wind activists' efforts to go directly to the high court have run aground.
2. Brooklyn/Staten Island, New York – The battery backlash in the NYC boroughs is getting louder – and stranger – by the day.
3. Baltimore County, Maryland – It’s Ben Carson vs. the farmer near Baltimore, as a solar project proposed on the former Housing and Urban Development secretary’s land is coming under fire from his neighbors.
4. Mecklenburg County, Virginia – Landowners in this part of Virginia have reportedly received fake “good neighbor agreement” letters claiming to be from solar developer Longroad Energy, offering large sums of cash to people neighboring the potential project.
5. York County, South Carolina – Silfab Solar is now in a bitter public brawl with researchers at the University of South Carolina after they released a report claiming that a proposed solar manufacturing plant poses a significant public risk in the event of a chemical emissions release.
6. Jefferson Davis County, Mississippi – Apex Clean Energy’s Bluestone Solar project was just approved by the Mississippi Public Service Commission with no objections against the project.
7. Plaquemine Parish, Louisiana – NextEra’s Coastal Prairie solar project got an earful from locals in this parish that sits within the Baton Rouge metro area, indicating little has changed since the project was first proposed two years ago.
8. Huntington County, Indiana – Well it turns out Heatmap’s Most At-Risk Projects of the Energy Transition has been right again: the Paddlefish solar project has now been indefinitely blocked by this county under a new moratorium on the project area in tandem with a new restrictive land use ordinance on solar development overall.
9. Albany County, Wyoming – The Rail Tie wind farm is back in the news again, as county regulators say landowners feel misled by Repsol, the project’s developer.
10. Klickitat County, Washington – Cypress Creek Renewables is on a lucky streak with a solar project near Goldendale, Washington, getting to bypass local opposition from the nearby Yakama Nation.
11. Pinal County, Arizona – A large utility-scale NextEra solar farm has been rejected by this county’s Board of Supervisors.