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U.S. manufacturers are racing to get into the game while they still can.
In the weird, wide world of energy storage, lithium-ion batteries may appear to be an unshakeably dominant technology. Costs have declined about 97% over the past three decades, grid-scale battery storage is forecast to grow faster than wind or solar in the U.S. in the coming decade, and the global lithium-ion supply chain is far outpacing demand, according to BloombergNEF.
That supply chain, however, is dominated by Chinese manufacturing. According to the International Energy Agency, China controls well over half the world’s lithium processing, nearly 85% of global battery cell production capacity, and the lion’s share of actual lithium-ion battery production. Any country creating products using lithium-ion batteries, including the U.S., is at this point dependent on Chinese imports.
This has, understandably, sent U.S. manufactures searching for alternatives, and lately they have struck on one that has the industry all excited: sodium-ion batteries. As global interest ramps up, domestic manufacturers have at least a prayer of building out their own sodium-ion supply chains before China completely takes over. Research and consulting firm Benchmark Mineral Intelligence expects to see a 350% jump in announced sodium-ion battery manufacturing capacity this year alone. And while the supply of these batteries is only in the tens of gigawatts today, Benchmark forecasts that it will be in the hundreds of gigawatts by 2030.
Sodium-ion technology itself isn’t particularly disruptive — it’s not new, nor does it serve a new market, exactly. It performs roughly the same as lithium-ion in energy storage systems, providing around four hours of power for either grid-scale or residential applications. But sodium-ion chemistries have a handful of key advantages — perhaps most critically that sodium is significantly more abundant in the U.S. than lithium, and is thus far cheaper. China has unsurprisingly taken an early lead in the sodium-ion market anyway, reportedly opening its first sodium-ion battery storage station in May. But because the industry is still so nascent, domestic manufacturers say there’s still time for them to get in the game.
“We’re focused on catching up to China in lithium-ion batteries, where in our view, we should be leapfrogging to what’s next,” Cam Dales, co-founder and chief commercial officer at Peak Energy, a Bay Area-based sodium-ion battery storage startup, told me. “There’s no CATL of the United States. That’s ultimately our ambition, is to become that.”
As political tensions between China and the U.S. mount, relying on a Chinese-dominated battery supply chain is geopolitically risky. Last month, the Biden administration announced a steep increase in tariffs on a wide array of Chinese imports, including a 25% tariff on lithium-ion non-electric vehicle batteries starting in 2026, and another 25% tariff on battery parts and certain critical minerals starting this year.
Because sodium is so plentiful and cheap, companies in the space estimate that sodium-ion storage systems could eventually be around 40% less expensive than lithium-ion systems, once manufacturing scales. This lower price point could eventually make sodium-ion economically viable for storage applications “up to eight, 10, maybe even 12 hours,” Dales told me.
Sodium-ion also has a leg up on lithium-ion when it comes to safety. While this is an ongoing area of research, so far sodium-ion batteries appear less likely to catch fire, at least in part because of their lower energy density and the fact that their electrolytes generally have a higher flashpoint, the temperature at which the liquid is capable of igniting. This could make them safer to install indoors or pack close together. It’s also possible to discharge sodium-ion batteries down to zero volts, completely eliminating the possibility of battery fires during transit, whereas lithium-ion can’t be completely discharged without ruining the battery. Finally, sodium-ion performs better in the cold than lithium-ion batteries, which notoriously struggle to charge and discharge as efficiently at low temperatures.
“When we saw announcements coming out of China about very large investments in large capacity sodium projects, that was really an eye opener for us,” Dales told me. He and co-founder Landon Mossburg launched Peak Energy last year with $10 million in funding. The company is currently importing sodium-ion cells and assembling battery packs domestically, but by 2027, Dales said he hopes to produce both cells and packs in the U.S., with an eye toward opening a gigafactory and onshoring the entirety of the supply chain.
He’s not alone in this ambition. Natron Energy, another Silicon Valley-based sodium-ion company, has been at this for more than a decade. The startup, founded in 2012, recently opened the first commercial-scale sodium-ion battery manufacturing facility in the U.S. When fully ramped, the plant will have the capacity to produce 600 megawatts of batteries annually, paving the way for future gigawatt-scale facilities.
It cost Natron over $40 million to upgrade the Michigan-based plant, which formerly produced lithium-ion batteries, into a sodium-ion facility, and while the first shipments were expected to begin in June, none have yet been announced. The company’s backers include Khosla Ventures as well as strategic investors such as Chevron, which is interested in using this tech at EV charging stations; United Airlines, which hopes to use it for charging motorized ground equipment; and Nabor Industries, one of the world’s largest oil and gas drilling companies, which is interested in using sodium-ion batteries to power drilling rigs. It also received nearly $20 million from ARPA-E to fund the conversion of the Michigan facility.
Beyond the U.S. and China, France-based sodium-ion cell developer Tiamat is planning to build out a massive 5-gigawatt facility, while Sweden-based Northvolt and UK-based Faradion are also hoping to bring sodium-ion battery manufacturing to the European market.
Sodium-ion isn’t a magic bullet technology, though, and it certainly won’t make sense for all applications. The main reason there hasn’t been much interest up until now is because these batteries are about 30% less energy-dense than their lithium-ion counterparts. That likely doesn’t matter too much for grid-scale or even residential storage systems, where there’s usually enough open land, garage, or exterior wall space to install a sufficiently-sized system. But it is the reason why sodium-ion wasn’t commercialized sooner, as lithium-ion’s space efficiency is better suited to the portable electronics and electric vehicle markets.
“It’s only in the last two years probably, that the stationary storage market has gotten big enough where it alone can drive specific chemistries and the investment required to scale them,” Dales told me.
Catherine Peake, an analyst at Benchmark Mineral Intelligence, also told me that lithium iron phosphate batteries — the specific flavor of lithium-ion that’s generally favored for energy storage systems — usually have a longer cycle life than sodium-ion batteries, meaning they can charge and discharge more times before performance degrades. “That cycle life is actually a pretty key metric for [energy storage system] applications,” she said, though she acknowledged that Natron is an outlier in this regard, as the company claims to have a longer cycle life than standard lithium-ion batteries.
Lithium is also a volatile market. Though prices have bottomed out recently, less than two years ago the world was facing the opposite scenario, as China saw the price for battery-grade lithium carbonate hit an all-time high, Kevin Shang, a senior research analyst at the energy consultancy WoodMackenzie, told me. “So this catalyzed a soaring interest in sodium-ion batteries,” he said.
Although Shang and Peake agree that the U.S. could seize this moment to build a domestic sodium-ion supply chain, both also said that scaling production up to the level of China or other battery giants like South Korea or Japan is a longshot. “After all, they have been doing this battery-related business for over 10 years. They have more experience in scaling up these materials, in scaling up these technologies,” Shang told me.
These countries are home to the world’s largest battery manufacturers, with CATL and BYD in China and LG Energy in South Korea. But Natron and Peak Energy are both startups, lacking the billions that would allow for massive scale-up, at least in the short term.
“It shouldn't be underestimated how hard it is to make anything in large volume,” Matt Stock, a product director at Benchmark, told me.Largely due to the maturity of lithium-ion battery supply chains, the research firm doesn’t see sodium-ion becoming the dominant energy storage tech anytime soon. Rather, by 2030, Benchmark forecasts that sodium-ion batteries will comprise 5% of the battery energy storage market, increasing to over 10% by 2040. BloombergNEF is somewhat more optimistic, predicting sodium-ion will make up 12% of the stationary energy storage market by 2030.
And while storage may be the most obvious near-term use case for sodium-ion batteries, it’s certainly not the only industry that stands to benefit. China is experimenting with using these batteries in two- and three-wheeled vehicles such as electric scooters, bikes, and motorcycles. And as the tech improves, Stock said it’s possible that sodium-ion batteries could become a viable option for longer-range EVs as well.
Ultimately, Dales thinks these batteries will follow a similar technological trajectory to lithium iron phosphate, a chemistry that many in the west thought would never be suitable for use in electric vehicle batteries. “Over time, our view is that sodium-ion will continue to increase its energy density just like [lithium iron phosphate] did,” Dales told me. Now, lithium iron phosphate is the dominant battery chemistry for Chinese-made EVs. “But what actually happened was it was so cheap and they made it better and better and better than now it’s taking over the world. We see this playing out again with sodium-ion.”
Benchmark, on the other hand, is more circumspect regarding sodium-ion’s world dominating potential. Stock said he sees the technology more as a supplement to lithium-ion, which can swoop in when lithium prices boom or critical minerals shortages hit. “When that happens, something like sodium-ion can fill the space. And that’s really where it’s a complementary technology rather than a replacement,” he told me. “If there were other technologies as mature as sodium-ion, we’d also see those being scaled alongside it, but sodium-ion is kind of next in line.”
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Defenders of the Inflation Reduction Act have hit on what they hope will be a persuasive argument for why it should stay.
With the fate of the Inflation Reduction Act and its tax credits for building and producing clean energy hanging in the balance, the law’s supporters have increasingly turned to dollars-and-cents arguments in favor of its preservation. Since the election, industry and research groups have put out a handful of reports making the broad argument that in addition to higher greenhouse gas emissions, taking away these tax credits would mean higher electricity bills.
The American Clean Power Association put out a report in December, authored by the consulting firm ICF, arguing that “energy tax credits will drive $1.9 trillion in growth, creating 13.7 million jobs and delivering 4x return on investment.”
The Solar Energy Industries Association followed that up last month with a letter citing an analysis by Aurora Energy Research, which found that undoing the tax credits for wind, solar, and storage would reduce clean energy deployment by 237 gigawatts through 2040 and cost nearly 100,000 jobs, all while raising bills by hundreds of dollars in Texas and New York. (Other groups, including the conservative environmental group ConservAmerica and the Clean Energy Buyers Association have commissioned similar research and come up with similar results.)
And just this week, Energy Innovation, a clean energy research group that had previously published widely cited research arguing that clean energy deployment was not linked to the run-up in retail electricity prices, published a report that found repealing the Inflation Reduction Act would “increase cumulative household energy costs by $32 billion” over the next decade, among other economic impacts.
The tax credits “make clean energy even more economic than it already is, particularly for developers,” explained Energy Innovation senior director Robbie Orvis. “When you add more of those technologies, you bring down the electricity cost significantly,” he said.
Historically, the price of fossil fuels like natural gas and coal have set the wholesale price for electricity. With renewables, however, the operating costs associated with procuring those fuels go away. The fewer of those you have, “the lower the price drops,” Orvis said. Without the tax credits to support the growth and deployment of renewables, the analysis found that annual energy costs per U.S. household would go up some $48 annually by 2030, and $68 by 2035.
These arguments come at a time when retail electricity prices in much of the country have grown substantially. Since December 2019, average retail electricity prices have risen from about $0.13 per kilowatt-hour to almost $0.18, according to the Bureau of Labor Statistics. In Massachusetts and California, rates are over $0.30 a kilowatt-hour, according to the Energy Information Administration. As Energy Innovation researchers have pointed out, states with higher renewable penetration sometimes have higher rates, including California, but often do not, as in South Dakota, where 77% of its electricity comes from renewables.
Retail electricity prices are not solely determined by fuel costs Distribution costs for maintaining the whole electrical system are also a factor. In California, for example,it’s these costs that have driven a spike in rates, as utilities have had to harden their grids against wildfires. Across the whole country, utilities have had to ramp up capital investment in grid equipment as it’s aged, driving up distribution costs, a 2024 Energy Innovation report argued.
A similar analysis by Aurora Energy Research (the one cited by SEIA) that just looked at investment and production tax credits for wind, solar, and batteries found that if they were removed, electricity bills would increase hundreds of dollars per year on average, and by as much as $40 per month in New York and $29 per month in Texas.
One reason the bill impact could be so high, Aurora’s Martin Anderson told me, is that states with aggressive goals for decarbonizing the electricity sector would still have to procure clean energy in a world where its deployment would have gotten more expensive. New York is targetinga target for getting 70% of its electricity from renewable sources by 2030, while Minnesota has a goal for its utilities to sell 55% clean electricity by 2035 and could see its average cost increase by $22 a month. Some of these states may have to resort to purchasing renewable energy certificates to make up the difference as new generation projects in the state become less attractive.
Bills in Texas, on the other hand, would likely go up because wind and solar investment would slow down, meaning that Texans’ large-scale energy consumption would be increasingly met with fossil fuels (Texas has a Renewable Portfolio Standard that it has long since surpassed).
This emphasis from industry and advocacy groups on the dollars and cents of clean energy policy is hardly new — when the House of Representatives passed the (doomed) Waxman-Markey cap and trade bill in 2009, then-Speaker of the House Nancy Pelosi told the House, “Remember these four words for what this legislation means: jobs, jobs, jobs, and jobs.”
More recently, when Democratic Senators Martin Heinrich and Tim Kaine hosted a press conference to press their case for preserving the Inflation Reduction Act, the email that landed in reporters’ inboxes read “Heinrich, Kaine Host Press Conference on Trump’s War on Affordable, American-Made Energy.”
“Trump’s war on the Inflation Reduction Act will kill American jobs, raise costs on families, weaken our economic competitiveness, and erode American global energy dominance,” Heinrich told me in an emailed statement. “Trump should end his destructive crusade on affordable energy and start putting the interests of working people first.”
That the impacts and benefits of the IRA are spread between blue and red states speaks to the political calculation of clean energy proponents, hoping that a bill that subsidized solar panels in Texas, battery factories in Georgia, and battery storage in Southern California could bring about a bipartisan alliance to keep it alive. While Congressional Republicans will be scouring the budget for every last dollar to help fund an extension of the 2017 Tax Cuts and Jobs Act, a group of House Republicans have gone on the record in defense of the IRA’s tax credits.
“There's been so much research on the emissions impact of the IRA over the past few years, but there's been comparatively less research on the economic benefits and the household energy benefits,” Orvis said. “And I think that one thing that's become evident in the last year or so is that household energy costs — inflation, fossil fuel prices — those do seem to be more top of mind for Americans.”
Opinion modeling from Heatmap Pro shows that lower utility bills is the number one perceived benefit of renewables in much of the country. The only counties where it isn’t the number one perceived benefit are known for being extremely wealthy, extremely crunchy, or both: Boulder and Denver in Colorado; Multnomah (a.k.a. Portland) in Oregon; Arlington in Virginia; and Chittenden in Vermont.
On environmental justice grants, melting glaciers, and Amazon’s carbon credits
Current conditions: Severe thunderstorms are expected across the Mississippi Valley this weekend • Storm Martinho pushed Portugal’s wind power generation to “historic maximums” • It’s 62 degrees Fahrenheit, cloudy, and very quiet at Heathrow Airport outside London, where a large fire at an electricity substation forced the international travel hub to close.
President Trump invoked emergency powers Thursday to expand production of critical minerals and reduce the nation’s reliance on other countries. The executive order relies on the Defense Production Act, which “grants the president powers to ensure the nation’s defense by expanding and expediting the supply of materials and services from the domestic industrial base.”
Former President Biden invoked the act several times during his term, once to accelerate domestic clean energy production, and another time to boost mining and critical minerals for the nation’s large-capacity battery supply chain. Trump’s order calls for identifying “priority projects” for which permits can be expedited, and directs the Department of the Interior to prioritize mineral production and mining as the “primary land uses” of federal lands that are known to contain minerals.
Critical minerals are used in all kinds of clean tech, including solar panels, EV batteries, and wind turbines. Trump’s executive order doesn’t mention these technologies, but says “transportation, infrastructure, defense capabilities, and the next generation of technology rely upon a secure, predictable, and affordable supply of minerals.”
Anonymous current and former staffers at the Environmental Protection Agency have penned an open letter to the American people, slamming the Trump administration’s attacks on climate grants awarded to nonprofits under the Inflation Reduction Act’s Greenhouse Gas Reduction Fund. The letter, published in Environmental Health News, focuses mostly on the grants that were supposed to go toward environmental justice programs, but have since been frozen under the current administration. For example, Climate United was awarded nearly $7 billion to finance clean energy projects in rural, Tribal, and low-income communities.
“It is a waste of taxpayer dollars for the U.S. government to cancel its agreements with grantees and contractors,” the letter states. “It is fraud for the U.S. government to delay payments for services already received. And it is an abuse of power for the Trump administration to block the IRA laws that were mandated by Congress.”
The lives of 2 billion people, or about a quarter of the human population, are threatened by melting glaciers due to climate change. That’s according to UNESCO’s new World Water Development Report, released to correspond with the UN’s first World Day for Glaciers. “As the world warms, glaciers are melting faster than ever, making the water cycle more unpredictable and extreme,” the report says. “And because of glacial retreat, floods, droughts, landslides, and sea-level rise are intensifying, with devastating consequences for people and nature.” Some key stats about the state of the world’s glaciers:
In case you missed it: Amazon has started selling “high-integrity science-based carbon credits” to its suppliers and business customers, as well as companies that have committed to being net-zero by 2040 in line with Amazon’s Climate Pledge, to help them offset their greenhouse gas emissions.
“The voluntary carbon market has been challenged with issues of transparency, credibility, and the availability of high-quality carbon credits, which has led to skepticism about nature and technological carbon removal as an effective tool to combat climate change,” said Kara Hurst, chief sustainability officer at Amazon. “However, the science is clear: We must halt and reverse deforestation and restore millions of miles of forests to slow the worst effects of climate change. We’re using our size and high vetting standards to help promote additional investments in nature, and we are excited to share this new opportunity with companies who are also committed to the difficult work of decarbonizing their operations.”
The Bureau of Land Management is close to approving the environmental review for a transmission line that would connect to BluEarth Renewables’ Lucky Star wind project, Heatmap’s Jael Holzman reports in The Fight. “This is a huge deal,” she says. “For the last two months it has seemed like nothing wind-related could be approved by the Trump administration. But that may be about to change.”
BLM sent local officials an email March 6 with a draft environmental assessment for the transmission line, which is required for the federal government to approve its right-of-way under the National Environmental Policy Act. According to the draft, the entirety of the wind project is sited on private property and “no longer will require access to BLM-administered land.”
The email suggests this draft environmental assessment may soon be available for public comment. BLM’s web page for the transmission line now states an approval granting right-of-way may come as soon as May. BLM last week did something similar with a transmission line that would go to a solar project proposed entirely on private lands. Holzman wonders: “Could private lands become the workaround du jour under Trump?”
Saudi Aramco, the world’s largest oil producer, this week launched a pilot direct air capture unit capable of removing 12 tons of carbon dioxide per year. In 2023 alone, the company’s Scope 1 and Scope 2 emissions totalled 72.6 million metric tons of carbon dioxide equivalent.
If you live in Illinois or Massachusetts, you may yet get your robust electric vehicle infrastructure.
Robust incentive programs to build out electric vehicle charging stations are alive and well — in Illinois, at least. ComEd, a utility provider for the Chicago area, is pushing forward with $100 million worth of rebates to spur the installation of EV chargers in homes, businesses, and public locations around the Windy City. The program follows up a similar $87 million investment a year ago.
Federal dollars, once the most visible source of financial incentives for EVs and EV infrastructure, are critically endangered. Automakers and EV shoppers fear the Trump administration will attack tax credits for purchasing or leasing EVs. Executive orders have already suspended the $5 billion National Electric Vehicle Infrastructure Formula Program, a.k.a. NEVI, which was set up to funnel money to states to build chargers along heavily trafficked corridors. With federal support frozen, it’s increasingly up to the automakers, utilities, and the states — the ones with EV-friendly regimes, at least — to pick up the slack.
Illinois’ investment has been four years in the making. In 2021, the state established an initiative to have a million EVs on its roads by 2030, and ComEd’s new program is a direct outgrowth. The new $100 million investment includes $53 million in rebates for business and public sector EV fleet purchases, $38 million for upgrades necessary to install public and private Level 2 and Level 3 chargers, stations for non-residential customers, and $9 million to residential customers who buy and install home chargers, with rebates of up to $3,750 per charger.
Massachusetts passed similar, sweeping legislation last November. Its bill was aimed to “accelerate clean energy development, improve energy affordability, create an equitable infrastructure siting process, allow for multistate clean energy procurements, promote non-gas heating, expand access to electric vehicles and create jobs and support workers throughout the energy transition.” Amid that list of hifalutin ambition, the state included something interesting and forward-looking: a pilot program of 100 bidirectional chargers meant to demonstrate the power of vehicle-to-grid, vehicle-to-home, and other two-way charging integrations that could help make the grid of the future more resilient.
Many states, blue ones especially, have had EV charging rebates in places for years. Now, with evaporating federal funding for EVs, they have to take over as the primary benefactor for businesses and residents looking to electrify, as well as a financial level to help states reach their public targets for electrification.
Illinois, for example, saw nearly 29,000 more EVs added to its roads in 2024 than 2023, but that growth rate was actually slower than the previous year, which mirrors the national narrative of EV sales continuing to grow, but more slowly than before. In the time of hostile federal government, the state’s goal of jumping from about 130,000 EVs now to a million in 2030 may be out of reach. But making it more affordable for residents and small businesses to take the leap should send the numbers in the right direction, as will a state-backed attempt to create more public EV chargers.
The private sector is trying to juice charger expansion, too. Federal funding or not, the car companies need a robust nationwide charging network to boost public confidence as they roll out more electric offerings. Ionna — the charging station partnership funded by the likes of Hyundai, BMW, General Motors, Honda, Kia, Mercedes-Benz, Stellantis, and Toyota — is opening new chargers at Sheetz gas stations. It promises to open 1,000 new charging bays this year and 30,000 by 2030.
Hyundai, being the number two EV company in America behind much-maligned Tesla, has plenty at stake with this and similar ventures. No surprise, then, that its spokesperson told Automotive Dive that Ionna doesn’t rely on federal dollars and will press on regardless of what happens in Washington. Regardless of the prevailing winds in D.C., Hyundai/Kia is motivated to support a growing national network to boost the sales of models on the market like the Hyundai Ioniq5 and Kia EV6, as well as the company’s many new EVs in the pipeline. They’re not alone. Mercedes-Benz, for example, is building a small supply of branded high-power charging stations so its EV drivers can refill their batteries in Mercedes luxury.
The fate of the federal NEVI dollars is still up in the air. The clearinghouse on this funding shows a state-by-state patchwork. More than a dozen states have some NEVI-funded chargers operational, but a few have gotten no further than having their plans for fiscal year 2024 approved. Only Rhode Island has fully built out its planned network. It’s possible that monies already allocated will go out, despite the administration’s attempt to kill the program.
In the meantime, Tesla’s Supercharger network is still king of the hill, and with a growing number of its stations now open to EVs from other brands (and a growing number of brands building their new EVs with the Tesla NACS charging port), Superchargers will be the most convenient option for lots of electric drivers on road trips. Unless the alternatives can become far more widespread and reliable, that is.
The increasing state and private focus on building chargers is good for all EV drivers, starting with those who haven’t gone in on an electric car yet and are still worried about range or charger wait times on the road to their destination. It is also, by the way, good news for the growing number of EV folks looking to avoid Elon Musk at all cost.