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VC funding has plummeted so far in 2023. It has also moved to new kinds of startups.

Venture capital investments in climate tech startups have plummeted 40% this year compared with the first half of 2022, according to a report out on Friday from Climate Tech VC, a market intelligence platform that tracks the space.
The trend is in part a reflection of a larger downturn across the broader startup landscape, which one prominent investor predicted earlier this year would lead to a “Mass Extinction Event” that “will make the ‘08 financial crisis look quaint.” Startups in all sectors are struggling to fundraise, thanks to macro conditions like the Federal Reserve raising interest rates to fight inflation and the related collapse of Silicon Valley Bank.
But the picture may not be quite as dire for climate solutions, which saw less of a decline than overall VC funding, which was down more than 50% in the first quarter of the year, compared to 2022, according to Pitchbook. Some areas, like startups working to cut emissions from buildings and heavy industry, are even seeing a boost, likely due to incentives in the Inflation Reduction Act. So far it’s more of a great reshuffling than a Great Recession.
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“I wouldn't say this is the second coming of clean tech 1.0,” Kim Zou, the co-founder of Climate Tech VC, told me. She was referencing a period in the early 2000s when venture capitalists poured billions into green technology companies and lost more than half of their money. “It's not that all of a sudden, it's a sharp drop off. It's actually that 2021, 2022, one could say that period was a bit of an abnormal peak,” she said.
Helen Lin, a partner at the VC firm At One Ventures, agreed that what’s happening is more of a market correction and a “return to fundamentals” than a calamity. In 2021, as the country was coming out of the worst of the COVID-10 pandemic, there was “a little bit of a bubble forming,” she told me. Lin said company valuations were overly optimistic and investors got a little sloppy, letting go of key metrics for later stage investments like revenue.
“It feels like when you're in one of those kiddie swimming pools and all the kids are thrashing about all at once, and there is all this frothy noise in the water, that's basically how it felt,” she said. “All these kids jumped in the pool because VC looked easy in 2021, there were deals everywhere.”
While overall funding for climate technology startups is down, interest in the sector is clearly not drying up. There was actually an increase in the number of deals made in the first six months of this year compared with last year by about 8%. But most of those deals were at the seed stage, where total funding also grew by 20%. Meanwhile, growth stage funding dropped a significant 64% — twice as high as the drop in growth VC across the economy.

To Zou, that reflects one of the primary challenges with climate technology, which is that companies face a much sharper “valley of death” than in other sectors. Many of the solutions needed are hard technologies that require a lot more capital to get past the proof-of-concept stage. Companies may have to build factories and work out new supply chains, both of which are expensive undertakings.
There’s also been a shift in the types of climate technologies VCs are funding. In 2021, investors made their big bets in electric vehicles and batteries with companies like Rivian and Northvolt raising more than $2 billion each. Now, VCs seem to be less interested in the end-products that directly reduce emissions, like EVs, and more interested in early stage companies that could enable more EVs to get deployed, like those specializing in mining, EV charging optimization, and fleet management.
Lin said that similarly, while enthusiasm for alternative protein companies has cooled slightly after industry leaders Beyond Meat and Impossible reported declining revenues last year, that’s not the full story. There’s still a lot of interest in funding innovative alternative protein startups, but more as a “functional ingredient” to supply to other food companies, rather than as a consumer product.
Investor interest in carbon management startups may also be shuffling around. VC funding in the sector has so far dried up by more than 50% after a big increase last year. Claire Nelson, co-founder of the carbon mineralization startup Cella, which just closed a seed funding round of $3.3 million, told me that investments seem to be shifting from the technologies that capture carbon to the support infrastructure, like carbon transportation and storage. Cella is developing novel injection and monitoring methods for carbon sequestration.

On the flipside, the report notes that startups working to cut emissions from the built environment, like heat pump companies, and from heavy industries, like cement and steel, saw a 7% increase in funding, likely due to new government subsidies in both the E.U. and the U.S. targeting those sectors.
The impact of climate tech funding is more than a financial concern. The International Energy Agency estimates that nearly half of the emissions reductions required to reach net-zero by 2050 will have to come from technologies that aren’t yet commercially available. VC firms don’t just provide the capital for startups to get off the ground, but they also provide a support system for scientists who may have never scaled a business in their lives, said Lin.
“You need people that know how to be the connective tissue between people who speak the language of science, and people who speak the language of scaling up a business in a commercial way,” she told me. “These are all the day-to-day tasks that we work on in a very real way with our portfolio companies.”
Historically, the latter half of the year has been when most VC is deployed, so time will tell if the report truly does reflect a market correction, or foretells a more worrisome trend.
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A trio of powerful climate hawks are throwing their weight against the SPEED Act.
Key Senate Democrats are opposing a GOP-led permitting deal to overhaul federal environmental reviews without assurances that clean energy projects will be able to reap the benefits. Winning these lawmakers’ support will require major concessions to build new transmission infrastructure and greater permitting assistance for renewable energy projects.
In an exclusive joint statement provided Tuesday to Heatmap News, Senate Energy and Natural Resources ranking member Martin Heinrich, Environment and Public Works ranking member Sheldon Whitehouse, and Hawaii senator Brian Schatz came out against passing the SPEED Act, a bill that would change the National Environmental Policy Act, citing concerns about how it would apply to renewable energy and transmission development priorities.
“We are committed to streamlining the permitting process — but only if it ensures we can build out transmission and cheap, clean energy. While the SPEED Act does not meet that standard, we will continue working to pass comprehensive permitting reform that takes real steps to bring down electricity costs,” the statement read.
As I wrote weeks ago, there’s very little chance the SPEED Act could become law without addressing Senate climate hawks’ longstanding policy preferences. Although the SPEED Act was voted out of committee in the House two weeks ago with support from a handful of Democratic lawmakers, it has yet to win support from even moderate energy wonks in that legislative body, including Representative Scott Peters, one of the Democratic House negotiators in bipartisan permitting talks. Peters told me he would need to see more assurances dealing with the renewables permitting freeze, for example, in order for him to support the bill.
Observers had initially expected a full House vote on the SPEED Act as soon as this week, but an additional hurdle arose in recent days in the form of opposition from House conservative Republicans, led by Representative Chip Roy. The congressman from Texas had requested additional federal actions targeting renewables projects in exchange for passage of the One Big Beautiful Bill Act, which effectively repealed the Inflation Reduction Act. What followed was a set of directives from the Interior Department that all but halted federal solar and wind permitting. Roy’s frustration with the SPEED Act concerns a relatively milquetoast nod to renewables permitting problems that would block presidents from rescinding already issued permits. This upset appears to have delayed a vote on the bill in the House.
There’s an eerie familiarity to this moment: Almost exactly one year ago, the last major attempt at a permitting deal, authored by Senators Joe Manchin and John Barrasso, died when then-Majority Leader Chuck Schumer declined to bring it up for a vote in the face of opposition from the House. Unlike the SPEED Act, that bill offered changes to transmission siting policy that even conservative estimates said would’ve hastened the pace of national decarbonization.
Having Schatz, Heinrich, and Whitehouse — the three most powerful climate hawks in Congress — throw their weight against the SPEED Act casts serious doubt on the prospects for that legislation becoming the permitting deal this Congress. It also exposes an intra-energy world conflict, as it appears to position these lawmakers in opposition to American Clean Power, an energy trade group that represents a swath of diversified energy companies and utilities, as well as solar, wind, and battery storage developers.
Last week, ACP joined with the American Petroleum Institute and gas pipeline advocacy organizations to urge Congress to pass the SPEED Act. In a letter to House Speaker Mike Johnson and Minority Leader Hakeem Jeffries, ACP and the fossil fuel industry trade groups said that the legislation “directly addresses” the challenges facing their interests and “represents meaningful bipartisan progress toward a more stable and dependable permitting framework.” The only reference to potential additions came in a single, vague line: “While the SPEED Act makes important progress, there are additional ways Congress can facilitate the development of reliable and affordable energy infrastructure as part of a broader permitting package.”
This letter was taken by some backers of the renewable energy industry to be an endorsement without concessions. It was also a surprise because just days earlier, American Clean Power responded to the bill’s passage with a vaguely supportive statement that declared “additional efforts” were needed for “transmission infrastructure,” without which “energy prices will spike and system reliability will be threatened.” (It’s worth noting that the committee behind the SPEED Act, House Natural Resources, has no authority over transmission siting. No other proposal has yet emerged from Republicans in that chamber for Republicans to address the issue, either.)
One of the renewables backers taken aback was Schatz, who took to X to sound off against the organization. “Congratulations to ‘American Clean Power’ for cutting a deal with the American Petroleum Institute, but to enact a law both the house and the Senate have to agree, and Senators are finding out about this for the first time,” Schatz wrote in a post, which Whitehouse retweeted from one of his official X accounts.
In a subsequent post, Schatz said: “I am not finding out about the bill’s existence for the first time, I am tracking it all very closely. I am finding out that ACP endorsed it as is without anything on transmission, for the first time.”
By contrast, the statement from the three senators aligns them with the Solar Energy Industries Association, which sent a letter from more than 140 solar companies to top congressional leaders requesting direct action to fix a bureaucratic freeze on permit-related activity that has already helped kill large projects, including Esmeralda 7, which was the largest solar mega-farm in the United States.
In its message to Congress, the trade association made plain that while the SPEED Act was a welcome form of permitting changes, it was nowhere close to dealing with Trumpian chicanery on the group’s priority list.
We’ll have more on this unfolding drama in the days to come.
One longtime analyst has an idea to keep prices predictable for U.S. businesses.
What if we treated lithium like oil? A commodity so valuable to the functioning of the American economy that the U.S. government has to step in not only to make it available, but also to make sure its price stays in a “sweet spot” for production and consumption?
That was what industry stalwart Howard Klein, founder and chief executive of the advisory firm RK Equities, had in mind when he came up with his idea for a strategic lithium reserve, modeled on the existing Strategic Petroleum Reserve.
Klein published a 10-page white paper on the idea Monday, outlining an expansive way to leverage private companies and capital markets to develop a non-Chinese lithium industry without the risk and concentrated expense of selecting specific projects and companies.
The lithium challenge, Klein and other industry analysts and executives have long said, is that China’s whip hand over the industry allows it to manipulate prices up and down in order to throttle non-Chinese production. When investment in lithium ramps up outside of China, Chinese production ramps up too, choking off future investment by crashing prices.
Recognizing the dangers stemming from dysfunction in the global lithium market constitutes a rare area of agreement between both parties in Washington and across the Biden and Trump administrations. Last year, a Biden State Department official told reporters that China “engage[s] in predatory pricing” and will “lower the price until competition disappears.”
A bipartisan investigation released last month by the House of Representatives’ Select Committee on Strategic Competition between the United States and the Chinese Communist Party found that “the PRC engaged in a whole‐of‐government effort to dominate global lithium production,” and that “starting in 2021, the PRC government engaged in a coordinated effort to artificially depress global lithium prices that had the effect of preventing the emergence of an America‐focused supply chain.”
Klein thinks he’s figured out a way to deal with this problem
“They manipulated and they crushed prices through oversupply to prevent us from having our own supply chains,” he told me.
It’s not just that China can keep prices low through overproduction, it’s also that the country’s enormous market power can make prices volatile, Klein said, which scares off private sector investment in mining and processing. “You have two years, up two years down, two years up, two years down,” he told me. “That’s the problem we’re trying to solve.
His proposal is to establish “a large, rules-based buffer of lithium carbonate — purchased when prices are depressed due to Chinese oversupply, and released during price spikes, shortages, or export restrictions.”
This reserve, he said, would be more than just a stockpile from which lithium could be released as needed. It would also help to shape the market for lithium, keeping prices roughly in the range of $20,000 per ton (when prices fall below that, the reserve would buy) and $40,000 to $50,000 per ton, when the reserve would sell. The idea is to keep the price of lithium carbonate — which can be processed as a material for batteries with a wide range of defense (e.g. drones) and transportation (e.g. electric vehicles) applications — within a range that’s reasonable for investors and businesses to plan around.
“Lithium has swung from like $6,000 [per ton] to $80,000, back down to $9,000, and now it’s at $11,000 or $12,000,” Klein told me. “But $11,000 or $12,000 is not a high enough price for a company to build a plan that’s going to take three to five years. They need $20,000 to $25,000 now as a minimum for them to make a $2 billion dollar investment.” When prices for lithium get up to “$50,000, $60,000, or $70,000, then it becomes a problem because battery makers can’t make money.”
Both the Biden and Trump administrations have taken more active steps to secure a U.S. or allied supply chain for valuable inputs, including rare earth metals. But Klein’s proposed reserve looks to balance government intervention with a diverse, private-sector led industry.
The reserve would be more broad-based than price floor schemes, where a major buyer like the Defense Department guarantees a minimum price for the output from a mine or refining facility. This is what the federal government did in its deal with MP Materials, the rare earths miner and refiner, which secured a multifaceted deal with the federal government earlier this year.
Klein estimates that the cost in the first year of the strategic lithium reserve could be a few billion dollars — on the scale of the nearly $2.3 billion loan provided by the Department of Energy for the Thacker Pass mine in Nevada, which also saw the federal government take an equity stake in the miner, Lithium Americas.
Ideally, Klein told me, “there’s a competition of projects that are being presented to prospective funders of those projects, and I want private market actors to decide, should we build more Thacker Passes or should we do the Smackover?” referring to a geologic formation centered in Arkansas with potentially millions of tons of lithium reserves.
Klein told me that he’s trying to circulate the proposal among industry and policy officials. His hoped is that as the government attempts to come up with a solution to Chinese dominance of the lithium industry, “people are talking about this idea and they’re saying, Oh, that’s actually a pretty good idea.”
Current conditions: After a two-inch dusting over the weekend, Virginia is bracing for up to 8 inches of snow • The Bulahdelah bushfire in New South Wales that killed a firefighter on Sunday is flaring up again • The death toll from South and Southeast Asia’s recent floods has crossed 1,750.

President Donald Trump’s Day One executive order directing agencies to stop approving permitting for wind energy projects is illegal, a federal judge ruled Monday evening. In a 47-page ruling against the president in the U.S. District Court for the District of Massachusetts, Judge Patti B. Saris found that the states led by New York who sued the White House had “produced ample evidence demonstrating that they face ongoing or imminent injuries due to the Wind Order,” including project delays that “reduce or defer tax revenue and returns on the State Plaintiffs’ investments in wind energy developments.” The judge vacated the order entirely.
Trump’s “total war on wind” may have shocked the industry with its fury, but the ruling is a sign that momentum may be shifting. Wind developers have gathered unusual allies. As I wrote here in October, big oil companies balked at Trump’s treatment of the wind industry, warning the precedents Republican leaders set would be used by Democrats against fossil fuels in the future. Just last week, as I reported here, the National Petroleum Council advised the Department of Energy to back a national permitting reform proposal that would strip the White House of the power to rescind already-granted licenses.
Back in October, I told you about how the head of the world’s biggest metal trading house warned that the West was getting the critical mineral problem wrong, focusing too much on mining and not enough on refining. Now the Energy Department is making $134 million available to projects that demonstrate commercially viable ways of recovering and refining rare earths from mining waste, old electronics, and other discarded materials, Utility Dive reported. “We have these resources here at home, but years of complacency ceded America’s mining and industrial base to other nations,” Secretary of Energy Chris Wright said in a statement.
If you read yesterday’s newsletter, you may recall that the move comes as the Trump administration signals its plans to take more equity stakes in mining companies, following on the quasi-nationalization spree started over the summer when the U.S. military became the largest shareholder in MP Materials, the country’s only active rare earths miner, in a move Heatmap's Matthew Zeitlin noted made Biden-era officials jealous.
NextEra Energy is planning to develop data centers across the U.S. for Google-owner Alphabet as the utility giant pivots from its status as the nation’s biggest renewable power developer to the natural gas preferred by the Trump administration. The Florida-based company already had a deal to provide 2.5 gigawatts of clean energy capacity to Facebook-owner Meta Platforms, and also plans gas plants for oil giant Exxon Mobil Corp. and gas producer Comstock Resources. Still, NextEra’s stock dropped by more than 3% as investors questioned whether the company’s skills with solar and wind can be translated to gas. “They’ve been top-notch, best-in-class renewable developers,” Morningstar analyst Andy Bischof told Bloomberg. “Now investors have to get their head around whether that can translate to best-in-class gas developer.”
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In October, Google backed construction of the first U.S. commercial installation of a gas plant built from the ground up with carbon capture. The project, which Matthew wrote about here, had the trappings to work where other experiments in carbon capture failed. The location selected for the plant already had an ethanol facility with carbon capture, and access to wells to store the sequestered gas. Now the U.S. could have another plant. In a press release Monday, the industrial giant Babcock and Wilcox announced a deal with an unnamed company to supply carbon capture equipment to an existing U.S. power station. More details are due out in March 2026.
Executives from at least 14 fusion energy startups met with the Energy Department on Monday as the agency looks to spur construction of what could be the world’s first power plants to harness the reaction that powers the sun. The Trump administration has made fusion a priority, issuing a roadmap for commercialization and devoting a new office to the energy source, as I wrote in a breakdown of the agency’s internal reorganization last month. It is, as Heatmap’s Katie Brigham has written, “finally, possibly, almost time for fusion” as billions of dollars flow into startups promising to make the so-called energy source of tomorrow a reality in the near future. “It is now time to make an investment in resources to match the nation’s ambition,” the Fusion Industry Association, the trade group representing the nascent industry, wrote in a press release. “China and other strategic competitors are mobilizing billions to develop the technology and capture the fusion future. The United States has invested in fusion R&D for decades; now is the time to complete the final step to commercialize the technology.” Indeed, as I wrote last month, China has forged an alliance with roughly a dozen countries to work together on fusion, and it’s spending orders of magnitude more cash on the energy source than the U.S.
Founded by a former Google worker, the startup Quilt set out to design chic-looking heat pumps sexy enough to serve as decor. Investors like the pitch. The company closed a $20 million Series B round on Monday, bringing its total fundraising to $64 million. “Our growth demonstrates that when you solve for comfort, design, and efficiency simultaneously, adoption accelerates,” Paul Lambert, chief executive and co-founder of Quilt, said in a statement. “This funding enables us to bring that experience to millions more North American homes.”