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Inside season 2, episode 8 of Shift Key.

In just over a month, America will elect hundreds of thousands of people to state, county, and municipal offices. While those elections might lack the splashiness of the race for the White House or Congress, they could shape how and whether the United States fights climate change. So which elections matter most?
On this week’s episode of Shift Key, Jesse and Rob speak with Caroline Spears, the executive director of Climate Cabinet, a group that tries to do ‘Moneyball for climate policy,’ analyzing the races that could matter most for the country’s decarbonization. A winner of the Grist 50 award, Spears formerly worked in the solar industry and now leads the growing organization. We dive into which offices have the most sway role over adaptation and mitigation and which races deserve your attention in 2024. Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
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Here is an excerpt from our conversation:
Caroline Spears: One of the races that is critically important for climate this year is elected utility commissions. They’re not elected in every state, but in about 10 states across the country, voters show up to their ballot box, and they elect the electricity regulatory body for their state.
Should that be an elected position? Listen, it’s not for me to decide. Democracy has decided that electricity regulatory bodies are elected in many states, so here we are. In a bunch of other states, they’re appointed and then confirmed by the state legislature. So there’s this interesting mix of when democracy shows up in these races, in these offices. There are a few public utility commission districts up this November. I really want to highlight the ones happening in Arizona and Montana this year — we’re really watching those, we’re excited to see where those go.
In both cases, climate champions are one and four or zero and five in those states, which means — literally, we are so far from a climate majority in either of those states. And this has real world impacts. So, for example, let’s talk about Montana really quick. That solar company that I used to work for: The Montana Public Service Commission unfairly changed the avoided cost rate, the rate at which we would get compensated, when solar started entering the market. And there’s this hot mic moment where an elected Montana Public Service Commissioner says, “Well, this will kill solar in the state,” and then voted for it. So that’s the power that these public service commissions have, and they’re up for election. They’re up for election this November. So they’re really important.
In Arizona, we’re supporting all three climate champions running. The one person I really want to highlight today is Ylenia Aguilar. She served on the water commission in Arizona, so she has a great knowledge of that intersection between climate and water issues in the state, and just last month she made national news for her work trying to cool down classrooms in Arizona from heating. So she’s someone who can bring together climate, knowledge of what it takes to be on an electricity regulatory commission, and the personal impact of how it actually shows up in people’s lives. So this is the exact type of person you want running for the seat. I’m really excited about those races, but those will be tough.
Jesse Jenkins: And I’ll just add, so these commissions are often in charge of effectively approving the investments and plans of the regulated utilities in the state. In some states, those are only network utilities. So they’re the ones investing in transmission and distribution lines, deciding how to make sure those are resilient to climate damages as we’re seeing from wildfires and floods and hurricanes and everything else.
In other states, like Arizona and Montana, they also oversee utilities that control power generation, as well. So should they be investing in new natural gas plants? Or should they be investing in batteries and solar? For example. Those kinds of decisions go before the utility commission for approval or disapproval before the utilities can earn returns on the investments they make in those areas — or make investments. And as you mentioned, they also set rates both for retail customers — so, you know, what’s the net metering policy? How are we incentivizing flexible EV charging? — and then the rates for, in some cases, avoided costs for larger-scale generators that are connecting to the grid in partial competition frameworks. Lots and lots of other rules.
They’ll be the ones in charge of implementing, usually, clean electricity standards — and in some states, like Arizona, they even have the authority to establish one themselves. So really, really influential bodies.
This episode of Shift Key is sponsored by …
Watershed’s climate data engine helps companies measure and reduce their emissions, turning the data they already have into an audit-ready carbon footprint backed by the latest climate science. Get the sustainability data you need in weeks, not months. Learn more at watershed.com.
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Intersolar & Energy Storage North America is the premier U.S.-based conference and trade show focused on solar, energy storage, and EV charging infrastructure. To learn more, visit intersolar.us.
Music for Shift Key is by Adam Kromelow.
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Practically every week brings a flood of climate tech funding news and announcements — startups raising a new round, a venture capital firm closing a fresh fund, and big projects hitting (and missing) milestones. Going forward, I’ll close out each week with a roundup of some of the biggest stories that I didn’t get a chance to cover in full.
This week, we’ve got money for electric ships, next-gen geothermal, and residential electrification in Europe. Yay!
Many say battery-powered cargo ships will never make sense — that batteries are too heavy, too bulky, and would take up too much valuable space. FleetZero says it can make it work. Last Friday, the electric shipping startup raised a $43 million Series A round led by Obvious Ventures, with participation from other firms including Maersk Growth, the shipping giant’s corporate venture arm, and Breakthrough Energy Ventures. The funding will support production of the company’s hybrid and electric propulsion systems, as well as new manufacturing and R&D operations in Houston.
Ships’ bunker fuel is extremely polluting. It accounts for roughly 3% of global CO2 emissions and dirties the air with other pollutants such as sulfur and nitrogen oxides. Most players in the shipping decarbonization space want to shift to liquid fuels such as e-ammonia or e-methanol — a move that would require mulit-million-dollar engine overhauls and retrofits. FleetZero says that battery electrification will prove to be cheaper and simpler. The company is building batteries large enough to hybridize — and potentially one day fully electrify — large container ships.
As FleetZero’s CEO and co-founder Steven Henderson told my colleague Robinson Meyer on a 2024 episode of Heatmap’s Shift Key podcast, batteries are a relatively simple maritime decarbonization solution because “you can use existing infrastructure and build on it. You don’t need a new fundamental technology to do this.” And while the company has yet to provide any cost estimates for electrifying commercial shipping, as Henderson put it, “the numbers to do this are not outside the realm of possibility.”
The next-generation geothermal startup Sage Geosystems announced on Wednesday that it raised a $97 million Series B round, co-led by the renewable energy company Ormat Technologies and the growth equity firm Carbon Direct Capital. This came atop a hot week for geothermal overall. As I wrote already, the artificial intelligence-powered geothermal developer Zanskar announced a $115 million Series C round for its pursuit of AI-driven conventional geothermal, while Axios reported that the geothermal unicorn Fervo Energy has filed for an IPO.
Like Fervo, Sage uses drilling technology adapted from the oil and gas industry to create its own artificial reservoirs in hot, dry rock. The startup then pumps these fractures full of water, where it absorbs heat from the surrounding rocks before being brought to the surface as steam that’s used to generate electricity. Sage’s CEO, Cindy Taff — a former Shell executive — told Bloomberg that this latest investment will accelerate the company’s project timeline by a full year or two, allowing the company to put power on Nevada’s grid sometime in 2027.
This latest funding follows Sage’s strategic partnership with Ormat, announced last year, and could help the startup make good on its agreement with Meta to deliver up to 150 megawatts of clean electricity for the tech giant’s data centers starting in 2027.
Berlin-based startup Cloover — which helps Europeans finance home electrification upgrades — announced a $22 million Series A round on Wednesday, alongside a $1.2 billion debt facility from an unnamed “leading European bank” that it can draw on. The company, which describes itself as both the “operating system for energy independence” and the “Shopify of Energy,” aims to help homeowners ditch fossil fuels by facilitating loans to cover the upfront cost of, say, buying and installing heat pumps, rooftop solar, or home batteries — something traditional banks struggle to finance.
Cloover’s a fintech platform allows home energy installers to manage complex projects while offering loans for green upgrades to customers at the point of sale. The software’s AI-driven credit underwriting evaluates not just a customer’s credit score, but also the projected energy savings and performance of the upgrade itself, helping align the price and terms of borrowing with the anticipated economic value of the asset.
Forbes reports that Cloover has already financed roughly 2,500 home energy installations. The company says it’s profitable, generating nearly $100 million in sales last year. With this new funding, the startup plans to expand across Europe and is projecting $500 million in sales this year, anticipating an explosion in demand for distributed energy resources.
One of the oldest players in the race to commercialize fusion energy, General Fusion, has been candid about its recent funding struggles, laying off 25% of its staff last spring while publicly pleading for more cash. This Thursday, it announced a lifeline: a SPAC merger that will provide the company with up to $335 million, if all goes according to plan. Read more about the deal in our Heatmap AM newsletter.
Current conditions: The monster snow storm headed eastward could dump more than a foot of snow on New York City this weekend • An extreme heat wave in Australia is driving temperatures past 104 degrees Fahrenheit • In northwest India, Jammu and Kashmir are bracing for up to 8 inches of snow.
Last month, Fervo Energy raised another $462 million in a Series E round to finance construction of the next-generation geothermal startup’s first major power plant. Pretty soon, retail investors will be able to get in on the hype. On Thursday, Axios reported that the company had filed confidential papers with the Securities and Exchange Commission in preparation for an initial public offering. Fervo’s IPO will be a milestone for the geothermal industry. For years, the business of tapping the Earth’s molten heat for energy has remained relatively small, geographically isolated, and dominated by incumbent players such as Ormat Technologies. But Fervo set off a startup boom when it demonstrated that it could use fracking technology to access hot rocks in places that don’t have the underground reservoirs that conventional geothermal companies rely upon. In yesterday’s newsletter, I told you about how Zanskar, a startup using artificial intelligence to find more conventional resources, and Sage Geosystems, a rival next-generation company to Fervo, had raised a combined $212 million. But as my colleague Matthew Zeitlin wrote in December when Fervo raised its most recent financing round, it’s not yet clear whether the company’s “enhanced” geothermal approach is price competitive. With how quickly things are progressing, we will soon find out.
Fervo isn’t the only big IPO news. General Fusion, the Canadian fusion energy startup TechCrunch describes as “struggling,” announced plans for a $1 billion reverse merger deal to go public on the Nasdaq. The move comes almost exactly a month after President Donald Trump’s social media company, the parent firm of Truth Social, inked a deal to merge with the fusion startup TAE Technologies and create the first publicly-traded fusion company in the U.S. Analysts I spoke to about the deal called it “flabberghasting,” and warned that TAE’s technology represented a more complex and dubious approach to commercializing fusion than that taken by rival companies such as Commonwealth Fusion Systems. Still, the IPO deals highlight the growing excitement over progress on generating power from a technology long mocked as the energy source of tomorrow that always will be. As Heatmap’s Katie Brigham artfully put it in 2024, “it is finally, possibly, almost time for fusion.”
General Motors plans to move manufacturing of the next generation of its Buick Envision SUV from China to the U.S. in two years and end production of the all-electric Chevrolet Bolt. The Detroit auto giant makes just one of its four SUV models in the U.S., leaving the cars vulnerable to Trump’s tariffs. The worst hit was the Envision, which is currently built in China. Starting in 2028, the latest version of the Envision will be produced in Kansas, taking over the assembly line that is currently churning out the Bolt.
It's a blow to GM's electric vehicle line. Chevy just brought back the Bolt in response to high demand after initially canceling production in 2023, because as Andrew Moseman put it in Heatmap, it's “the cheap EV we've needed all along.” While Chevy had always framed the return as a limited run, it was not previously clear how limited that would be.
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The Department of Energy said Thursday its newly rebranded Office of Energy Dominance Finance, formerly the Loan Programs Office, is “restructuring, revising, or eliminating more than $83 billion in Green New Scam loans and conditional commitments.” The move comes after “an exhaustive first-year review” of the $104 billion in principal loan obligations the Biden administration shelled out, including $85 billion the Trump administration accused of being “rushed out the door in the final months after Election Day.” In a statement, Secretary of Energy Chris Wright said the changes are meant to “ensure the responsible investment of taxpayer dollars.” While it’s not yet clear which projects are affected, the agency said the EDF eliminated about $9.5 billion in support for wind and solar projects and redirected that funding to natural gas and nuclear energy. But as Heatmap’s Emily Pontecorvo noted last night, the Energy Department hasn’t yet said which loans are set to be canceled as part of the latest cuts. The announcement may include loans that have already been canceled or restructured.
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If you know anything about surging electricity demand, you’re likely to finger a single culprit: data centers. But worldwide, air conditioning dwarfs data centers as a demand driver. And in California, electric vehicles are on pace to edge out data centers as a bigger driver of peak demand on the grid. That’s according to a new report from the California Energy Commission. Just look at this chart:

As the Golden State tries to get a grip on its electricity system, Representative Ro Khanna, the progressive Silicon Valley congressman often discussed as a potential 2028 presidential candidate, has doubled down on his calls to break up the state’s largest utility. On Thursday, Khanna posted on X that PG&E “should be broken up and owned by customers, not shareholders. They are ripping off Californians by buying off politicians in Sacramento.” The Democrat has been calling for PG&E’s demise since at least 2019, when the utility was on the hook for billions of dollars in damages from a wildfire sparked by its equipment. But the idea hasn’t exactly caught on.
New energy technologies such as batteries, solar panels, and wind turbines are driving demand for minerals and spurring a controversial push for new mines on virgin lands. But a new study by researchers at the University of Queensland’s Sustainable Minerals Institute found that a production boom is already underway at existing mines. The peer-reviewed paper, which is the first comprehensive global analysis of brownfield mining expansion, found that existing mines are growing in size and scale. Just because the mines are already there doesn’t mean the new production doesn’t come with some social cost. Nearly 78% of the 366 mines analyzed in the study “are located in areas facing multiple high-risk socioeconomic conditions, including weak governance, poor corruption control, and limited press freedom,” the study found.
The Department of the Interior has a new coal mascot. On Thursday, the agency posted an animated picture of a cartoonish, rosy-cheeked, chicken nugget-shaped lump of coal clad in a yellow hardhat and construction gear. His name? Coalie. The idea isn’t original. Australia’s coal-mining trade group rolled out an almost identical mascot a few years ago — same anthropomorphic lump of coal, same yellow attire. The only difference? His name was Hector, and he wore glasses.
The Secretary of Energy announced the cuts and revisions on Thursday, though it’s unclear how many are new.
The Department of Energy announced on Thursday that it has eliminated nearly $30 billion in loans and conditional commitments for clean energy projects issued by the Biden administration. The agency is also in the process of “restructuring” or “revising” an additional $53 billion worth of loans projects, it said in a press release.
The agency did not include a list of affected projects and did not respond to an emailed request for clarification. However the announcement came in the context of a 2025 year-in-review, meaning these numbers likely include previously-announced cancellations, such as the $4.9 billion loan guarantee for the Grain Belt Express transmission line and the $3 billion partial loan guarantee to solar and storage developer Sunnova, which were terminated last year.
The only further detail included in the press release was that some $9.5 billion in funding for wind and solar projects had been eliminated and was being replaced with investments in natural gas and building up generating capacity in existing nuclear plants “that provide more affordable and reliable energy for the American people.”
A preliminary review of projects that may see their financial backing newly eliminated turned up four separate efforts to shore up Puerto Rico’s perennially battered grid with solar farms and battery storage by AES, Pattern Energy, Convergent Energy and Power, and Inifinigen. Those loan guarantees totalled about $2 billion. Another likely candidate is Sunwealth’s Project Polo, which closed a $289.7 million loan guarantee during the final days of Biden’s tenure to build solar and battery storage systems at commercial and industrial sites throughout the U.S. None of the companies responded to questions about whether their loans had been eliminated.
Moving forward, the Office of Energy Dominance Financing — previously known as the Loan Programs Office — says it has $259 billion in available loan authority, and that it plans to prioritize funding for nuclear, fossil fuel, critical mineral, geothermal energy, grid and transmission, and manufacturing and transportation projects.
Under Trump, the office has closed three loan guarantees totalling $4.1 billion to restart the Three Mile Island nuclear plant, upgrade 5,000 miles of transmission lines, and restart a coal plant in Indiana.