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Companies have been trying for years to domesticate their supply chains. They didn’t move fast enough.

Over a decade’s worth of economic incentives — tariffs on solar components from China, the Inflation Reduction Act’s subsidies for American clean energy manufacturing, tariffs on Southeast Asian solar for avoiding tariffs on China — have been telling the American renewables industry in every possible way: Bring your supply chains home.
Now any company that hasn’t completely done so is being hunted down by Wall Street. East and Southeast Asia have been the most heavily hit by Donald Trump’s gamut of new tariffs, with China facing cumulative tariffs of over 60% and “reciprocal” tariffs of 46% hitting Vietnam, 49% on Cambodia, and 37% on Thailand.
Fluence, a battery storage systems company, has fallen almost 22% in the past two trading days. The Chinese solar company Jinko is down 15%.
“There no question that there will be impacts on the supply chain for clean energy, solar, wind,” Rob Collier, vice president of marketplaces for LevelTen, a platform for clean energy deals, told me. He’s spent the past few days on calls with developers and trade organizations, he said, and “truly, everyone is trying to get their arms around this and digest, what are the impacts?”
While there’s inherent uncertainty with anything involving America’s dealmaker-in-chief, the market has not held back from making its judgment.
Fluence has been actively trying to bring more of its supply chain to the United States for years, opening a battery module facility in Utah last September. But it “still relies on contract manufacturing in Vietnam to meet demand until U.S. operations scale,” wrote Jefferies analyst Julien Dumoulin-Smith in a note to clients Friday.
“We’ve credited Fluence for its domestic strategy,” the note said, “but the reality is that the company didn’t onshore operations soon enough (and understandably so). There’s no way to time tariffs of this scale.”
Like many companies with supply chains in Asia, Fluence got a slight breath of relief early Friday when President Donald Trump posted on Truth Social that he was in talks with Vietnam’s leader To Lam about potentially lowering the country’s tariff.
But another company that wasn’t so lucky is the inverter and battery company Enphase, whose shares are down 8% since the tariff announcement.
Like many electrical equipment and clean energy companies, Enphase has been telling anyone who will listen that it wants to get out of China. The company’s chief executive, Badri Kothandaraman, told Bloomberg in February, “We need to be making cell packs outside of China, and that’s what we are going to be focusing on the next year.” He added that a third of Enphase’s assembly was in the United States.
But at the same time, it was also telling investors how difficult reshoring will be.
In its annual report, Enphase disclosed that its lithium-iron phosphate battery cells “are supplied solely via our two suppliers in China,” and expressed both hope and doubt of its ability to source them elsewhere. “Although we are in the process of searching for other suppliers outside of China for future supplies, the expertise and industry for the LFP battery cell is primarily in China and we cannot be certain that we will locate additional qualified suppliers with the right expertise to develop our battery cells outside of China, if at all.”
The company said it had “focused efforts and resources on attaining manufacturers outside of China, primarily in Mexico and India,” but had since “moved a significant portion of our manufacturing to the United States.” About 85% of Enphase’s microinverters are made domestically, while the rest are made in China and India, according to Morningstar analyst Brett Castelli.
For the solar industry, China tariffs are nothing new — they’ve been in place to some degree or another since the 2010s. The industry’s response has largely been to move supply chains into Southeast Asia. U.S. solar imports from Southeast Asia hit $12 billion in 2023, according to Reuters, while Chinese imports have been almost eliminated.
“The industry has made significant progress in reshoring manufacturing to the US following the Inflation Reduction Act, but imports of items such as solar panels remain, especially for the upstream portion of the value chain (solar cells),” Castelli wrote in a note Thursday.
“Tariffing Vietnam is tariffing a lot of Chinese companies,” Damien Ma, an adjunct professor at the Kellogg School of Management and founder a China-focused think tank, told me. “If you’re a Chinese solar company right now, it’s not a great time.”
Mizuho Securities analyst Maheep Mandloi wrote to clients Thursday that residential solar battery companies were the most affected of any clean energy stocks, but that the entire sector’s exposure was “limited” due to equipment being a “smaller portion of developer capex and … nearshoring was already underway owing to IRA incentives.”
If anything, Mandloi wrote, the greatest risk to developers was “elevated costs of U.S. components, given cheap substitutes may no longer be available to others, and corresponding demand destruction from higher prices.”
Mandloi also forecast that residential installer Sunrun would suffer from the tariffs due to “limited pass through price power,” i.e. limited ability to make customers cover its increased input costs, which would decrease demand across the solar industry.
He also pointed to Enphase and the solar inverter and equipment company Solaredge, which is trading down 13% since Wednesday. That’s despite Solaredge’s manufacturing footprint having “entirely changed” due to subsidies for advanced manufacturing in the IRA, its head of investor relations, JB Lowe, said at a March conference. “We used to manufacture in multiple locations in Asia, in Mexico, in Europe even, and we have moved for all intents and purposes our manufacturing footprint entirely to the U.S.”
While Donald Trump may not be interested in climate change or green energy, his predecessor’s climate policies have been responsible for pulling substantial production from Asia to the United States, and now the market wants more of it.
“The IRA is more or less an anti-China industrial policy,” Ma told me.
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Just as demand for batteries is intensifying.
The energy impacts of the continued crisis in the Persian Gulf are obvious. Countries that rely on the natural gas and oil from the region are dealing with higher prices, and in some cases are trying to tamp down their demand for fuel and electricity to keep prices under control, not to mention maintain basic energy availability.
But it’s not just gas-fired power plants and internal combustion engines that are feeling the pinch.
The consequences of the effective closure of the Strait of Hormuz go well beyond the set of energy commodities typically associated with the Persian Gulf, including a vast array of minerals and petrochemicals, including many necessary to produce clean energy. We’ve already covered aluminum, a key component of solar panels, cars, and batteries, which requires so much energy for processing that almost 10% of it is produced in the Middle East, where fuel is abundant.
Now another chemical essential to the battery supply chain is seeing price hikes and supply reductions: sulfuric acid.
Sulfuric acid is used in refining and processing several metals and minerals key to the energy transition, including copper, cobalt, nickel, and lithium. Copper is used throughout EVs and other clean technologies, while nickel and cobalt are used in cathodes in lithium-ion batteries — which, of course, also contain lithium. Shortages or higher prices of sulfuric acid could lead to shortages or higher prices for batteries and electric vehicles, just as consumers flock to them to help mitigate the impacts of rising fossil fuel costs.
Sulfur is a byproduct of oil and natural gas refining, hence about half of seaborne sulfur comes from the Middle East, according to Argus Media, but only a handful of sulfur-bearing vessels have transited the Strait of Hormuz since the war began. In response to the disruption, China, the world’s top exporter of sulfuric acid, began restricting shipments abroad, according to S&P.
Sulfuric acid “is an irreplaceable input in the manufacture of renewable energy materials, such as silicon wafers in solar panels; the nickel, cobalt, and rare earths in wind turbine magnets and electric vehicle (EV) motors; and the copper wiring in every grid connection and transformer,” wrote Atlantic Council fellow Alvin Camba in an analysis for the think tank.
“Most elemental sulfur comes from the Middle East,” Camba told me, “and it goes to places like Indonesia,” where metals are processed to “produce the batteries for a lot of vehicles for companies like Tesla, BYD, and Honda.”
Shortages of sulfuric acid will likely hit Indonesia especially hard. The country produces about 60% of the world’s nickel, but has only about a month’s inventory of sulfur, according to a team of Morgan Stanley analysts. “We believe the energy shock is reverberating and will sustain beyond the reopening of the Strait of Hormuz,” the analysts wrote of China’s export restrictions. “It will keep fuel markets tighter, lift the cost curve for Indonesian nickel, and raise refining margins in Asia. Higher energy prices will show up in food, tech and battery supply chains.”
Already, according to Morgan Stanley, “several” Indonesian nickel producers have reduced their output by at least 10% from last month. In the Democratic Republic of Congo, copper and cobalt miners are reducing their use of chemicals in their operations and considering cutting output.
Battery manufacturers are already seeing higher costs for their materials. The Chinese battery giant (and Tesla supplier) CATL saw its profit margins decline quarter-over-quarter revenue growth due to “cost pressure,” Morningstar analyst Vincent Sun wrote last week in a note to clients — and that’s despite greater sales volumes as consumers attempt to escape fossil fuel-dependency. As sulfuric acid rises in price, the battery companies will also be competing with agribusiness, who use sulfuric acid to produce phosphate fertilizers, Camba told me.
Even Ivanhoe Mines chief executive and metal and mining mega-bull Robert Friedland said in a statement last week, “If the closure of the Straits of Hormuz continues … second-derivative effect will be on global copper production due to the shortage of the world’s most important industrial chemical, sulfuric acid.” Friedland described the market for sulfur and sulfuric acid as “extremely tight.”
That also spells bad news for lithium, the namesake mineral used in EV batteries. Around half of global lithium production comes from spodumene, a hard rock mined largely in Western Australia. Refining that rock requires a "shitload" of sulfuric acid, Nathaniel Horadam, the founder and president of Full Tilt Strategies, told me, through an energy intensive process known as “acid baking.”
Australian mines were already suffering from high diesel prices and shortages due to the conflict in Iran, according to Argus Media. The high price of sulfuric acid could put a squeeze on margins for lithium refining, which largely occurs in China.
“If their production costs go up, that’s going to be factoring into their market pricing,” Horadam said. “I would expect all those prices to go up in the short to medium term until this stuff kind of settles.”
The other major threat to battery makers specifically, Horadam said, was shortages of petrochemicals like ethylene, which is used in the production of plastics, and polyethylene, a polymer often used in plastic bags.
Ethylene is often made from ethane, a natural gas liquid, or naphtha, a refined petroleum product and production in the Persian Gulf has been severely disrupted by the Hormuz crisis. As of March, Asian petrochemical producers had already reduced their output in anticipation of shortages.
Polyethylene is also a crucial component in lithium-ion batteries, where it’s often used in the “separator,” which physically divides the cathode from the anode. Even the Trump administration has thrown its support behind polyethylene in battery manufacturing A $1.3 billion loan from the Department of Energy’s in-house bank to finance a separator manufacturing facility in Indiana survived the Trump administration’s gutting of that office, with $77 million getting disbursed last September. (Notably, the Trump-era announcement dropped a reference to electric vehicles and instead enumerated separators’ uses in “data centers, energy storage, and consumer electronics.”)
Over 40% of lithium-ion separators are produced in China with the “bulk” of them produced in Asia, according to the DOE, which makes support for domestic production paramount to maintaining international competitiveness and domestic supply chains.
“We’re relying on the Chinese and Japanese to produce all our separators and electrolytes and such,” Horadam said. “This sulfuric stuff is getting all the attention because it’s pretty obvious in terms of visible, salient minerals that are directly impacted, but I wouldn’t sleep on separators and binding agents.”
The opinion covered a host of actions the administration has taken to slow or halt renewables development.
A federal court seems to have struck down a swath of Trump administration moves to paralyze solar and wind permits.
U.S. District Judge Denise Casper on Tuesday enjoined a raft of actions by the Trump administration that delayed federal renewable energy permits, granting a request submitted by regional trade groups. The plaintiffs argued that tactics employed by various executive branch agencies to stall permits violated the Administrative Procedures Act. Casper — an Obama appointee — agreed in a 73-page opinion, asserting that the APA challenge was likely to succeed on the merits.
The ruling is a potentially fatal blow to five key methods the Trump administration has used to stymie federal renewable energy permitting. It appears to strike down the Interior Department memo requiring sign-off from Interior Secretary Doug Burgum on all major approvals, as well as instructions that the Interior and the Army Corps of Engineers prioritize “energy dense” projects in ways likely to benefit fossil fuels. Also struck down: a ban on access to a Fish and Wildlife Service species database and an Interior legal opinion targeting offshore wind leases.
Casper found a litany of reasons the five actions may have violated the Administrative Procedures Act. For example, the memo mandating political reviews was “a significant departure from [Interior] precedent,” and therefore “required a ‘more detailed justification’ than that needed for merely implementing a new policy.” The “energy density” permitting rubric, meanwhile, “conflicts” with federal laws governing federal energy leases so it likely violated the APA, the judge wrote.
What’s next is anyone’s guess. Some cynical readers may wonder whether the Supreme Court will just lift the preliminary injunction at the administration’s request. It’s worth noting Casper had the High Court’s penchant for neutralizing preliminary injunctions in mind, writing in her opinion, “The Court concludes that the scope of this requested injunctive relief is appropriate and consistent with the Supreme Court’s limitations on nationwide injunctions.”
On China’s H2 breakthrough, vehicle-to-grid charging, and USA Rare Earth goes to Brazil
Current conditions: In the Atlantic, Tropical Storm Fernand is heading northward toward Bermuda • In the Pacific, Tropic Storm Juliette is active about 520 miles southwest of Baja California, with winds of up to 65 miles per hour • Temperatures are surging past 100 degrees Fahrenheit in South Korea.
Nearly two weeks ago, Vineyard Wind sued one of its suppliers, GE Vernova, to keep the industrial giant from exiting the offshore wind project off the coast of Nantucket in Massachusetts. Now a U.S. court has ordered GE Vernova to finish the job, saying it would be “fanciful” to imagine a new contractor could complete the installation. GE Vernova had argued that Vineyard Wind — a 50/50 joint venture between the European power giant Avangrid and Copenhagen Infrastructure Partners — owed it $300 million for work already performed. But Vineyard Wind countered that the manufacturer remains on the hook for about $545 million to make up for a catastrophic turbine blade collapse in 2024, according to WBUR. “The project is at a critical phase and the loss of [Vineyard Wind]’s principal contractor would set the project back immeasurably,” the Suffolk County Superior Court Judge Peter Krupp wrote in his decision, repeatedly using the name of GE Vernova’s renewables subsidiary. “To pretend that [Vineyard Wind] could go out and hire one or more contractors to finish the installation and troubleshoot and modify [GE Renewables’] proprietary design without [GE Renewables’] specialized knowledge is fanciful.”
Charlotte DeWald fears the world is sleepwalking into tipping points beyond which the Earth’s natural carbon cycles will render climate change uncontrollable. By the time we realize what it means for global weather and agricultural systems that there’s no sea ice in the Arctic sometime in the 2030s, for example, it may be too late to try anything drastic to buy us more time. Much of the discourse around what to do concerns a specific kind of geoengineering called stratospheric aerosol injections, essentially spraying reflective particles into the sky to block the sun’s heat from permeating the increasingly thick layer of greenhouse gases that prevent that energy from naturally radiating back into space. That’s something DeWald, a former Pacific Northwest National Laboratory researcher and climate scientist by training who specialized in modeling aerosol-cloud interactions, knows all about. But her approach is different, using a technology known as mixed-phase cloud thinning, a process similar to cloud seeding. “The idea is that you could dissipate clouds over the Arctic to release heat from the surface to, for example, increase sea ice extent or thickness or integrity,” she told me. “There’s some early modeling that suggests that it could yield significant cooling over the Arctic Ocean.”
With all that context, you can now appreciate the exclusive bit of news I have for you this morning: DeWald is launching a new nonprofit called the Arctic Stabilization Initiative to “evaluate whether targeted interventions can slow dangerous” warming near the Earth’s northern pole. So far, ASI has raised $6.5 million in philanthropic funding toward a five-year budget goal of $55 million to study whether MCT, as mixed-phase cloud thinning is known, could help save the Arctic. The nonprofit has an advisory board stacked with veteran Arctic scientists and put together a “stage-gated” research plan with offramps in case early modeling suggests MCT won’t work or could cause undue environmental damage. The project also has an eye toward engaging with Indigenous peoples and “will ground all future work in respect for Indigenous sovereignty, before any field-based research activity is pursued.” The statement harkens to Harvard University’s SCoPEx trial, a would-be outdoor experiment in spraying reflective aerosols into the atmosphere over Sweden that ran aground after researchers initially failed to consult local stakeholders and a body representing the Indigenous Saami people in the northern reaches of Nordic nations came out against the testing. (By repeatedly invoking ASI’s nonprofit status, DeWald also seemed to draw a contrast with for-profit stratospheric aerosol injection startup Stardust Solutions, which last year Heatmap’s Robinson Meyer reported had raised $60 million.) “We are continuing to move toward critical planetary thresholds without a bible plan for things like tipping points,” DeWald said. “That was the inflection point for me.”

China just took yet another step closer to energy independence, despite its relatively tiny domestic reserves of oil and gas, kicking off the world’s largest project to blend hydrogen into the natural gas system. As part of the experiment, roughly 100,000 households in the center of the Weifang, a prefecture-level city in eastern Shandong province between Beijing and Shanghai, will receive a blend of up to 10% hydrogen through existing gas pipes. The pilot’s size alone “smashes” the world record, according to Hydrogen Insight. Whether that’s meaningful from a climate perspective depends on how you look at things. A fraction of 1% of China’s hydrogen fuel comes from electrolyzer plants powered by clean renewables or nuclear electricity. But the People’s Republic still produces more green hydrogen than any other nation. Last year, the central government made cleaning up heavy industry with green hydrogen a higher priority — a goal that’s been supercharged by the war in Iran. Therein lies the real biggest motivator now. While China relies on imports for natural gas, swapping out more of that fuel for domestically generated hydrogen allows Beijing to claim the moral high ground on emissions and air pollution — all while becoming more energy independent.
Meanwhile, China’s container ships are the latest sector to experiment with going electric and forgoing the need for costly, dirty bunker fuel. A 10,000-ton fully electric cargo vessel capable of carrying 742 shipping containers just started up operations in China this week, according to a video posted on X by China’s Xinhua News service.
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The ability of electric vehicles to serve as distributed energy resources, charging in times of low demand and discharging back onto the grid when demand peaks, has long been a dream of EV enthusiasts and DER advocates alike. California’s PG&E utility launched a small bi-directional charging program in 2023, allowing owners of Ford F-150 Lightnings to use their trucks as home backup power, and eventually feed energy back onto the grid. The utility added a host of General Motors EVs to the program back in 2025. On Monday, it announced its latest vehicle participant: Tesla’s Cybertruck. The Tesla vehicle will be the first in the program to run on alternating current, which simplifies the equipment necessary and lowers costs for consumers, according to PG&E’s announcement.
In January, I told you about the then-latest company to benefit from President Donald Trump’s dabbling in what you might call state capitalism with American characteristics: USA Rare Earth. The vertically integrated company, which aims to mine rare earths in Texas, took big leaps forward in the past year toward building factories to turn those metals into the magnets needed for modern technologies. For now, however, the company needs ore. On Monday, USA Rare Earth announced plans to buy Brazilian rare earth miner Serra Verde in a deal valued at $2.8 billion in cash and shares. The transaction is expected to be complete by the end of the third quarter of this year. The company pitched the move as a direct challenge to China, which dominates both the processing of rare earths mined at home and abroad. “The world has become too dependent on a single source and it’s high time to break that dependency,” USA Rare Earth CEO Barbara Humpton told CNBC’s “Squawk Box” on Monday.
As if we needed more evidence that the data center backlash is “swallowing American politics,” here’s Heatmap’s Jael Holzman with yet another data point: According to tracking from the Heatmap Pro database, fights against data centers now outnumber fights against wind farms in the U.S. That includes both onshore and offshore wind developments. “Taken together,” Jael wrote, “these numbers describe the tremendous power involved in the data center wars.”