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On the third anniversary of the signing of the Inflation Reduction Act, Heatmap contributor Advait Arun mourns what’s been lost — but more importantly, charts a path toward what comes next.

Today, the Inflation Reduction Act would have turned three years old — if it hadn’t been buried alive in a big, beautiful grave. While the IRA was a hodgepodge of programs salvaged from President Biden’s far more ambitious Build Back Better agenda, it still represented the biggest climate investment in U.S. history. It catalyzed over $360 billion in energy and manufacturing investments and was expected to drive the installation of over 155 gigawatts of new solar and wind energy by 2030. And now Republicans have taken a sledgehammer to its achievements.
The timing could not be worse — not just for the climate, but also for the energy systems that we rely on. At a moment when the energy sector requires $1.4 trillion worth of upgrades by 2030 just to keep up with rising energy demand and increasingly erratic weather, Republicans have instead delivered a one-two punch of tariffs and tax hikes, sabotaging the industrial base required to deliver those investments and raising the retirement age of our power generation fleet.
All over the country (Texas and California maybe exempted), our aging electricity system is putting in its two-weeks notice. Staring down the barrel of precipitous demand growth, the country’s regulated utilities have requested over $29 billion in rate increases, concentrated across the West and South. The Department of Energy ordered the delayed retirement of coal plants and oil generators to manage this summer’s demand peaks. Meanwhile, capacity market prices on two of the country’s largest grids, PJM and MISO, have reached record highs ― a cry for new supply that is now increasingly unlikely to materialize quickly or cheaply. Two months ago, an unplanned nuclear reactor outage on a congested part of Louisiana’s energy grid led to a blackout for 100,000 people in and around New Orleans. That meant no working AC or refrigerators across large swaths of the city during a sweltering Memorial Day weekend.
All of this amounts to an opening for Democrats to shift public opinion decisively in favor of renewed climate action. Moving forward, lawmakers cannot ignore our infirm fossil-fired energy system, which stands to thwart their ability to deliver affordability, employment, health, and resilience to their constituents. Despite our recent losses, we still need an energy policy ― a climate policy.
What should the Democrats’ second attempt at a clean investment program look like? Having delivered the Bipartisan Infrastructure Law and the Inflation Reduction Act, laws that committed the state to the realization of a particular energy future, Democrats are well-positioned to build on their successes, and even to engage Republicans who remain interested in supporting innovative technologies, decarbonizing industry, and protecting public lands.
Where they cannot meet Republicans halfway, Democrats should double their ambitions. They must continue to embrace the power of federal investment to shape markets and achieve policy goals. But they must also learn from the shortcomings of their previous legislative outings and substantively change how the federal government invests in the first place. The way forward for Democrats starts with mapping out exactly how far they didn’t go, and ends with going there.
IRA and BIL were paradigm-shifting attempts at market-shaping. They laid the groundwork for the deployment of promising clean firm energy technologies such as next-generation geothermal and nuclear energy, as well as for necessary grid and supply chain upgrades, such as long-distance transmission corridors and critical minerals processing.
IRA and BIL were not, however, a comprehensive climate policy. They created cost-share programs for infrastructure resilience but neglected to buttress municipal bond markets, which states and local governments can use to make longer-term investments in climate resilience and adaptation. They penalized methane emissions but organized no comprehensive or compulsory managed phaseout of fossil fuel infrastructure. They failed to advance or adequately finance a coordinated deployment strategy for any key energy sector. And they shed the transformative vision of Biden’s Build Back Better agenda, which sought to stabilize the cost of living for Americans in the meantime — a tactical retreat that, in retrospect, looks ill-advised given voters’ current worries about affordability.
I am aware that criticizing BIL and IRA on these grounds amounts to judging them for goals they didn’t attempt to achieve. Judging them by the goals they did attempt to achieve, however, reveals that they only ever worked incompletely. Taken together, BIL and IRA expanded the energy tax credit system, created powerful programs for piloting and deploying innovative energy technologies, and seeded an ecosystem of regional financing institutions devoted to more equitably distributing the benefits of decarbonization. But the energy tax credits were never expansive enough; the programs intended to motivate investments into deeper decarbonization were not flexible enough to drive the mass uptake of emerging technologies; and efforts to decarbonize disadvantaged communities lacked a coherent strategy and ran headlong into local capacity constraints.
Speeding up the energy transition and building new infrastructure at scale requires endowing federal and state agencies with adequate appropriations, access to liquidity, and crystal-clear, wide-ranging mandates, as well as empowering them in statute with considerable flexibility as to the financial products and strategies they deploy to achieve those mandates.
Although imperfect, the IRA’s tax credits scored some significant wins that should undoubtedly inform future policy. The law took an existing system of technology-specific subsidies that had been on the books in some form since 1978 and made them technology-neutral, allowing developers of nearly any zero-emissions energy technology to access tax relief. It expanded the credits to domestic manufacturers of certain low- and zero-carbon technologies. It created a tax credit transfer market, allowing developers with limited tax liability to sell their credits for cash on an open market to any tax-liable buyer, rather than engage in expensive and complex “tax equity” transactions with a few large banks. It made certain credits directly accessible to tax-exempt entities, significantly broadening the pool of potential users. And most of these credits remained entirely uncapped ― a “bottomless mimosa” for developers that spurred over $321 billion in clean energy and manufacturing investments and supported more than 2,000 new facilities across the country.
To be sure, the IRA did not level the playing field perfectly across developers or across technologies. Developers of energy transmission, grid transformers, and electric rail were shut out of the credits. Tax-exempt public and nonprofit developers ― entities as large as the New York Power Authority and as small as local churches ― could not monetize depreciation or participate in the transfer market. And some credits remained capped, forcing developers to apply and cross their fingers. But as early as 2023, Goldman Sachs argued that even with these inadequacies ― which have easy legislative and statutory fixes ― the IRA would still have spurred over $3 trillion in investment by 2033.
The GOP has gutted much of this system, shortcomings and all, and replaced it with a tangle of red tape. The energy tax credits are once again technology-specific ― solar and wind developers have a few months left to start a project and claim the credits as written, though what it means to start a project got more complex just yesterday. But even the “clean firm” energy technologies that can still claim credits until 2032, such as nuclear and geothermal, may not be safe under new “foreign entity of concern” rules, which condition credits on developers’ ability to limit their reliance on Chinese suppliers and investment, requiring them to map out their supply chains at an unprecedented level of detail.
Democrats seeking to restore and build upon this plank of the IRA have their work cut out for them. The developers and manufacturers of any technology that contributes to zero-emissions energy production should be able to access and monetize federal support regardless of their tax status and free from the rigmarole and uncertainties imposed by competitive application procedures. Goldman Sachs’ $3 trillion estimate is now the lower bound of what’s possible — for instance, a tax credit for transmission investments suggested as part of Build Back Better but excluded from the IRA could have catalyzed over $15 billion in investment and supported the economics of all other energy projects. To the degree that the tax credits can help build industrial capacity and institutional support for decarbonization, future policymaking should maximize their remit and their distribution.
Tax credits alone, however, are hardly a skeleton key to decarbonization. Being disbursed only once a project is complete, tax credits do not substitute for the kinds of upfront financial support that project developers — especially developers of emerging technologies — require to complete their projects in the first place. Private investors have been comfortable with solar, batteries, and onshore wind because these projects can be completed, claim their tax credits, and earn revenues on the grid on a mostly predictable timetable. But new nuclear reactors, geothermal, hydrogen, green steel, and carbon capture are unfamiliar investments, have uncertain development pathways and return profiles, and thus remain un-bankable to investors.
This is why BIL and IRA created powerful programs worth tens of billions of dollars to finance the deployment of emerging clean technologies and break this vicious cycle of uncertainty. The Office of Clean Energy Demonstrations, or OCED, and the Loan Programs Office, or LPO, in particular, were empowered to support, at scale, the testing and commercialization of these emerging technologies as well as conversions of whole electricity grids.
OCED, with over $27 billion in appropriations, set up hubs for hydrogen and carbon capture projects across the country, and funded a suite of advanced steel and iron decarbonization projects. Endowed by BIL and IRA with over $15 billion in total credit subsidy and well over $300 billion in total loan authority, LPO made ambitious investments across a host of innovative technology categories, including ― but certainly not limited to ― energy storage, sustainable aviation fuels, virtual power plants, EV charging, and bioenergy. At the end of 2024, the LPO had over 200 loan applicants in its queue.
By rescinding OCED’s unobligated funding, ambiguously rewriting LPO’s lending authorities (while rescinding most of its unobligated credit subsidy), and pulling the plug on billions of dollars worth of conditional commitments, the GOP has stopped years of progress in its tracks. In the meantime, LPO has shed considerable staff while the administration has prevented it from making any new commitments. The combination of the “foreign entity of concern” rules constraining tax credit eligibility and this shuttering of federal financing opportunities could seriously throttle the development and commercialization of nuclear energy in particular, the darling du jour of Republicans’ energy strategy.
If these offices were once the engines of decarbonization, they needed a stronger spark plug. The LPO, in particular, has a special authority to finance state government-backed, non-innovative clean energy projects, such as regional battery manufacturing clusters or a state power developer’s renewables portfolio, but has never used it. And while OCED and LPO can provide developers with some degree of upfront support, LPO cannot easily provide construction loans, cannot derisk project cash flows to provide security to investors, and cannot mandate offtake. These deficiencies prevent ambitious borrowers with unproven technologies from scaling up: they scare off private lenders in the infrastructure sector, many of which are skittish about construction risk, require project developers to demonstrate three to five years of stable cash flows, have a low tolerance for market price uncertainty, and have shareholders who demand a certain level of returns.
The DOE can bridge this “valley of death” by using its broader market-shaping authorities to take a more aggressive “dealership” role in these sectors, providing stable offtake for developers through upfront purchasing while becoming a reliable source of supply to downstream customers (like an actual car dealership or a grocery store). The DOE has in fact already used this approach to provide demand-side support to its now-endangered hydrogen hubs through OCED.
These kinds of public dealership arrangements are not unique or path-breaking: The Federal Reserve’s backstop of the municipal bond market in 2020, nonprofit investor Climate United’s planned EV trucking purchase-and-lease program in California, and even the Department of Defense’s recent MP Materials deal are all examples of public entities addressing a mismatch in the supply of and demand for a critical good and, in doing so, shaping markets toward public ends.
For all that BIL and IRA built avenues for developing and deploying energy technologies, they were also full of programs aimed at distributing the fruits of decarbonization equitably. Both the energy community bonus credits, a provision in the IRA that increased the value of the energy tax credits for projects in poorer, higher-unemployment, and energy facility-adjacent communities, and President Biden’s Justice40 initiative, which directed 40% of federal spending toward poorer and more rural communities, exemplified the administration’s “place-based” approach to industrial policy and economic development. The Biden administration heavily encouraged disadvantaged communities, local governments, schools, nonprofits, and tribal nations to develop their own clean energy projects — aided by the IRA’s direct pay mechanism, which allowed tax-exempt entities to access subsidies — by drawing on the various local decarbonization programs in BIL and IRA.
The Greenhouse Gas Reduction Fund, perhaps the most important of these programs, exemplifies the promises and pitfalls of the administration’s approach to “place-based” industrial policy. Managed by the Environmental Protection Agency, GGRF provided $27 billion to disadvantaged communities for the financing of rooftop solar, zero-emissions transport, and net-zero housing. That pot was split into three thematic buckets ― $7 billion to the Solar for All program, specifically for rooftop solar development; $14 billion to the National Clean Investment Fund, for supporting clean energy project finance more broadly in disadvantaged communities; and $6 billion more to local and regional technical assistance providers. Each program then subdivided its appropriations further. Solar for All went to 60 recipients across the country via a competitive application. The National Clean Investment Fund’s $14 billion was split among three awardees, each a coalition of various financial institutions designed to lend to energy projects, such as green banks, impact investors, and nonprofits ― and each of those recipient coalitions planned to subdivide much of its funds still further, first among coalition partners and then to subordinate local and state partners.
That dizzying program structure was meant to endow local communities with the ability to finance their own projects. And by including so many nonprofit institutions, GGRF could make significant inroads into Republican states, whose officials might otherwise reject federal funding.
But there was not much coordination between partners and subawardees around how best to deploy those funds. And what seemed like a firehose of financing often reached local recipients as a trickle of pre-development and technical assistance grants. Demanding that local organizations build their own capacity to plan, finance, and develop projects (or hire expensive external consultants to do so) ― with limited and one-time funds, no less ― is duplicative and inefficient, and it defeats GGRF’s own stated goal of mobilizing private capital through building standardized markets for decarbonization, thereby slowing down the pace of emissions reductions. The program’s complexity also left it vulnerable to EPA Administrator Lee Zeldin’s efforts to hound the program in court and freeze its funding.
Pandemic-era proposals for a National Investment Authority, as well as legislative proposals for a national green bank ― predecessors to the GGRF ― differ sharply from this status quo, instead highlighting how public finance can benefit from economies of scale. Larger financial institutions tasked with deploying clean energy projects can more easily prepare portfolios of projects for co-investors, engage with utilities, raise debt on municipal bond markets, and build a bench of trustworthy private developers to contract for projects. If they are publicly administered, these institutions can also take more risk, undercut private lenders, support more developers, engage with local communities to meet their needs, and use revenues from higher-return projects to derisk lower-return projects that might be necessary to build to achieve their resilience and affordability goals.
Should policymakers get a second shot at building a national green bank system, they should not try to recreate GGRF’s fractal approach to energy finance. Rather, policymakers must ensure that financing sits in the hands of public agencies that already have the authorities and expert staff to be ambitious market-shapers: bond banks, state-led energy finance authorities, and public developers. The good news is that state-level green banks empowered with state funding and a political mandate are already exercising their capacities to shape markets and support disadvantaged communities directly: the New York Power Authority, the Minnesota Climate Innovation Finance Authority, the Connecticut Green Bank, and the Greater Arizona Development Authority, to name a few, are all taking it upon themselves to raise debt and contract with developers to undertake ambitious energy and infrastructure investment programs.
But Democrats should be clear-eyed about the consequences of this reorientation: It means rejecting the prevailing wisdom that local nonprofits should necessarily coordinate local project development. Local groups can be extremely effective advocates for communities’ needs ― but in contrast to public investment agencies, their capacity to finance and implement solutions is simply not great enough.
This analysis of IRA and BIL leaves out more parts of the laws than it includes ― to take just one example, the BIL’s $5 billion National Electric Vehicle Infrastructure charging station program. But the story is similar: Ambitious as it seemed, NEVI money could only flow when state governments set up implementation offices and had their spending plans approved by federal officials. Most states, which had not prepared for any of this, took years to build the requisite capacity ― just in time for the Trump administration to try and snatch away the funding (though it recently admitted defeat in that project). In fairness to state governments, the EV charging sector is incredibly new. But even this program highlights how IRA and BIL lacked the capacity to be implemented as quickly and efficiently as their supporters hoped.
Going above and beyond BIL and IRA to deliver an energy policy that stabilizes Americans’ cost of living while driving an energy transition away from fossil fuels and toward the technologies of the future ― Democrats should embrace this challenge. But they should also be aware that climate ambition runs headlong into the same institutional problems facing American democracy at large. The Senate filibuster prevents either party from comprehensively redesigning the federal government, its institutions, and its regulations to serve Americans more quickly and more efficiently. That leaves both parties reliant on budget reconciliation ― to our detriment. The head-spinning design of GGRF was itself an artifact of the reconciliation process, which prevented Congress from creating a single green bank institution or giving it a specific mandate; its awardee organizations and coalitions certainly did not ask for the program structure they got.
There’s a lot more that budget reconciliation will never solve: the century-old American utility system, the regulatory thicket of U.S. electricity markets, or the land use and permitting rules that constrain project development and grid interconnection. And things could get worse: Trump-appointed judges and Supreme Court justices who reject federal agencies’ and state governments’ attempts to regulate fossil fuel infrastructure have placed the legal system itself at odds with responsible energy system management. The courts may no longer be able to block clawbacks and recissions of legally obligated federal spending. Democrats, like clean energy developers, do not fight on a level playing field.
While Democrats are out of federal power, they should practice ambitious climate policymaking at the state level. States already have considerable ability to raise finance and build capacity for ambitious infrastructure projects ― and they might have to quickly, considering the drain of federal capacity that might support them. By developing their own public programs for transmission finance, utility-scale battery procurement, virtual power plants, and clean firm energy pilots, Democratic state governments can ensure that the ecosystem of clean energy developers created by BIL and IRA does not disappear for lack of demand — and in doing so, these states would help stabilize the cost of clean energy project development.
Finally, Democrats should not forget that climate remains a cost of living issue. In a city like New Orleans, rocked by the recent nuclear outage, residents spend, on average, over 19% of their incomes on their energy bills, over three times the DOE’s threshold to be considered an energy-burdened community. Their bills already include adders for climate adaptation and disaster preparedness ― yet, for all they spend, they still face blackouts, and their costs will only increase as their grid continues to deteriorate. Here, climate policy is not about combating Chinese supply chain dominance, or even about delivering an American industrial renaissance. It’s about keeping the lights on, keeping bills low, keeping the air clean, and keeping residents safe from disaster.
It turns out that voters all over the country still care about these goals. A majority of likely voters in the next election think climate change will have a direct impact on their or their family’s finances. This constituency is still in play — and given sharply deteriorating macroeconomic conditions, soon-to-spike electricity prices, and the ever-increasing threat of climate disaster, these cost-of-living-focused voters could be far more vocal, relevant, and hungry for change than a coalition built on vague sabre-rattling against China.
In 2022, Democrats made a valiant first attempt to transform the state itself. Perhaps it was inadequate, perhaps it was impossible to do more at the time, but that’s no reason not to think seriously about the kind of policymaking, institutional, and financial interventions that would be called for should they get a second shot at realizing that goal. The rollback of the IRA only reveals how much Democrats left on the table three years ago ― and how much farther a real climate policy could go.
Editor’s note: This story has been updated to clarify the relationship between the unplanned nuclear shutdown and the power outage in New Orleans.
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Even though he is partially responsible for them.
This is an edition of Heatmap Daily, an evening review of the day’s news written by our executive editor. Sign up for it here.
Welcome to August — which, as the political commentator Josh Barro once observed, is the year’s “stupidest news month.” Because Congress goes on recess around this time of year, and so many other Americans go on vacation, “the quantity of serious news structurally declines,” and we journalists have to turn to sillier stories in order to fill the space.
I couldn’t help but think of that post today. As my colleague Matthew Zeitlin covered last week, oil companies recently had a blowout quarter. Last week, Chevron reported its best quarterly earnings result ever, while Exxon announced its largest profit in four years. None of this was a surprise: The Iran war and the Strait of Hormuz’s closure sent oil prices soaring around the world in the spring, making the supermajors’ domestic refinery business especially profitable. Despite its big result, Exxon actually underperformed Wall Street’s expectations — that’s how expected all of this was.
Still, though — the oil companies benefited from a supply shock that was hurting everyone else in the economy. Although this kind of volatility is part and parcel of the commodities business — it is part of what makes commodities so enticing to investors — it is, at the very least, not a good look. And in times like these, progressive policymakers will sometimes call for a windfall profits tax, a one-time levy on large and unexpected profits arising from a situation outside a company’s control. (Centrists and conservatives tend to prefer making different reforms to the tax system that tax “supernormal” profits.)
The United States last imposed a windfall profits tax on oil companies in the 1970s, but other countries still use them today: The U.K. implemented one after Russia’s invasion of Ukraine drove up gas prices in 2022, as did a handful of European countries. More recently, Senator Sheldon Whitehouse of Rhode Island and Representative Ro Khanna of California proposed a windfall tax after gasoline prices shot up in March.
I wouldn’t have counted President Trump among Whitehouse’s and Khanna’s number. Yet speaking to reporters from the Oval Office today, Trump said the oil companies were “making too much money” from the Strait of Hormuz closure.
“Chevron, too much money. ExxonMobil, too much money,” the president said. “When you look at one company where they made 12 times what they made the year before, they ought to give some of that back to the public … And they better cut the retail price, the consumer price.”
He noted that many reporters looked “surprised” he was saying it, but reiterated he “wasn’t happy.”
Now, the president hasn’t quite called for a windfall profits tax — he seems to have something more voluntary in mind. Yet given Trump’s fealty to the industry in virtually every other context, his comments are striking and make his political judgement around the war all the more perplexing. The president chose to go to war with Iran — and the almost certain outcome of that conflict, in any world, was going to be higher oil prices. If anything, the war has moved crude less than analysts would have thought. What was Trump expecting here?
I don’t expect these remarks to usher in some new era of Trumpian policy or politics — this is probably just another silly August story. But they reflect how much the politics of energy have changed since President Trump took office in January 2025. Americans know it, Democrats know it, and President Trump knows it too.
Data centers are a big test for the nascent industry. But they also can’t fill the orderbooks.
For the last few years, there’s been just one story dominating the economy, Silicon Valley, and much of the climate tech world too: artificial intelligence. It has consumed investor’s time and money, leaving relatively little for the rest of the startup ecosystem. But for companies that can hitch themselves to the AI boom and tie their value proposition to the data center buildout, this narrow funding focus can be a tailwind.
The most obvious beneficiaries so far have largely fallen into two camps: startups using AI to build cheaper, better products or those developing technologies to cleanly power data centers themselves. But what about the companies actually manufacturing the physical materials behind these facilities? The data center buildout is ultimately an investment in the physical economy, which largely means an investment in concrete — the most widely used man-made material on Earth.
Cement, the key ingredient that binds concrete together, accounts for 8% of global CO2 emissions, and is a major driver of hyperscaler’s scope 3 emissions. Microsoft and Google’s recent sustainability reports, for example, reveal that their largest emissions category isn’t electricity but “capital goods,” which includes the embodied carbon in their physical assets and infrastructure such as the concrete, steel, server racks, and silicon used to build data centers.
Cement is a big part of that picture because producing it typically requires burning limestone in kilns at extremely high temperatures, a process that both uses large amounts of fossil fuels and releases CO2 through the underlying chemical reaction itself. So if hyperscalers are serious about decarbonization, one might expect them to be pretty interested in startups such as Brimstone, Sublime Systems, and Fortera, each of which is pursuing a different approach to reducing cement’s carbon footprint.
And they are interested. But that alone won’t fill these company’s orderbooks or offset the headwinds generated by the Trump administration rescinding previously obligated grants. That challenge has only been compounded by climate tech’s broader fall from favor as investors chase flashier, more explicitly AI-centric bets.
Still, Cory Waltrip, Sublime’s VP of business development, told me that data centers make a fantastic beachhead market for the company’s low-carbon cement, which it produces through an electrochemical process that eliminates the need for high-temperature kilns. Hyperscalers, he said, have both the market power and financial runway to think long-term about “the way that they’re signing agreements” and “how you can structure those agreements.” Of course, “the balance sheet and the amount of capital that they allocate towards sustainability commitments” doesn’t hurt either.
Last May, Microsoft signed an offtake agreement with Sublime to purchase up to 622,500 metric tons of cement from the company’s future demonstration plant in Holyoke, Massachusetts, as well as a yet-to-be-sited full-scale facility. The deal is unique because it doesn’t require Microsoft to actually use Sublime’s cement in its data centers. Since cement is expensive and impractical to ship long distances, what Microsoft really purchased is the cement’s so-called “environmental attributes,” allowing Sublime to sell the physical product to local customers while Microsoft gets to claim the associated emissions reductions.
It was one of the first deals in the cement industry to decouple the physical product from its environmental benefits. But that good news was quickly overshadowed. Just eight days later, Energy Secretary Chris Wright announced the cancellation of 24 awards from the DOE’s Office of Clean Energy Demonstrations, including a $87 million grant for Sublime and a $189 million grant for Brimstone. That sent Sublime into a tailspin: In December, it paused plans for its demo plant, and in March it laid off roughly two-thirds of its workforce. The company has since filed a suit in the court of federal claims, alleging that the DOE breached its contract with Sublime, but a resolution could take years.
All the cement-hungry data centers in the world would struggle to make up for the loss of that federal funding. Hyperscalers want to buy low-carbon cement from companies that already have a credible pathway to commercial production, not foot the bill for a first-of-a-kind plant.
So Sublime is now pursuing “alternative scale up plans” that don’t involve the Holyoke facility, with Microsoft remaining “a committed customer,” Waltrip said. The most promising option involves co-locating with existing but underutilized standard cement plants in North America or Europe. Doing so could reduce capital costs by roughly 20% to 40%, Waltrip told me. “We can use all of the existing crushing, grinding, finishing, and storage equipment that an existing cement plant already has.”
Building in Europe — something Sublime has yet to commit to but is certainly considering — could also open the door to other non-dilutive public financing, such as the bloc’s roughly €40 billion EU Innovation Fund, which regularly backs industrial decarbonization projects such as low-carbon cement.
In the meantime, the company also says it’s made significant process improvements that could drastically change the scale at which it builds plants. While former CEO Leah Ellis described Sublime’s future commercial facility as a “megaton-scale plant,” Sublime now thinks it could economically produce the material in 50,000 to 250,000 metric tons-per-year facilities. These smaller plants would be far easier to finance without relying on large government grants, Waltrip told me.
Sublime is exploring multiple other undisclosed data center engagements as well, as Waltrip revealed that “we’ve completed materials testing with at least one hyperscaler. We’ve completed a concrete demonstration pour with another hyperscaler,” and “we’ve negotiated or are in the process of negotiating commercial agreements with other hyperscalers beyond Microsoft.”
The company also conducted a small test pour of its low-carbon concrete last year with STACK Infrastructure, a data center developer that leases out its facilities. But while the material has exceeded performance standards, STACK is unlikely to become a customer anytime soon. “If we had a commercial plant ready to go, I think we would be having no issues with finding customers for that product,” Waltrip told me. The challenge is that developers outside the major hyperscalers typically lack the financial flexibility to sign long-term offtake agreements for a product that may not reach meaningful scale until the mid-2030s.
So for now, Google, Microsoft, Meta, and Amazon remain the most sought-after buyers.
Brimstone, another low-carbon cement company, also landed a major hyperscaler deal last year. The company, which still uses kilns but replaces limestone with carbon-free calcium silicate rocks in its production process, agreed to supply Amazon with an undisclosed amount of cement and supplementary cementitious materials, which can partially replace cement in concrete. CEO Cody Finke told me he couldn’t share any additional details, including the volume of materials reserved or when he expects deliveries to begin, though he readily acknowledges the impact of the data center boom.
“There’s no question that the data center buildout has increased the demand for these materials,” Finke told me. Early last year, the company announced that it’s also figured out how to adapt its process to produce alumina — the refined material that smelters turn into aluminum. Data centers also use this metal throughout their operations in structural panels, server racks, and cooling systems. Eventually, the company says it will be able to make additional critical minerals and materials including steel, magnesium, and titanium.
For now though, Brimstone is working to complete construction of its demo plant in Reno, Nevada, which the company recently said it expects to be operational in 2028. Finke was somewhat more cautious, however, telling me only that it should come online by “the end of the decade.” The company’s first full-scale plant, the location of which it’s yet to announce, is slated to begin operations around 2034, producing 350,000 metric tons of alumina and an undisclosed amount of cement and other materials.
But like Sublime, Brimstone also lost a major source of federal support when the Trump administration rescinded its $189 million DOE grant, which was intended to finance construction of the demo plant. Finke, however, insisted this hasn’t altered the company’s timeline because Brimstone, having netted over $80 million to date, “had effectively raised the money that we needed, regardless of the grant.”
Finke isn’t relying on the goodwill of hyperscalers either, even though many do appear willing to pay a green premium in order to align with their ambitious, if flailing, decarbonization agendas. “To be frank, I don’t think that it’s that important to the transition whether or not those climate policies exist, because the companies that really matter are going to be cheaper anyway,” he told me.
Brimstone, he argues, is one of those companies. By co-producing multiple products at once, each can effectively offset the cost of the others, and Finke expects even the cement produced at the Reno demo plant to sell at standard market rates. Ultimately, while he sees growth in the data center industry as a tailwind, he doesn’t think Brimstone depends on that market, noting these facilities still only account for a small sliver of global cement demand. The company’s primary customers, he said, will ultimately be traditional buyers: concrete producers purchasing cement and aluminum smelters buying alumina.
Yet data centers willing to negotiate multi-year contracts still represent uniquely valuable first customers in an industry where such agreements are exceedingly rare. Instead, producers typically sell cement into a merchant spot market, where buyers purchase from whatever supplier meets their myriad requirements at the time. But that leaves low-carbon materials startups in a bind, Fortera’s CEO Ryan Gilliam told me. “When you’re trying to bring a new technology to market like us, you typically use offtake agreements to get project financing to justify building up big projects,” he explained. Potential investors simply want to see demonstrated future demand.
Fortera, which has raised about $150 million and has an operational pilot plant in California, captures the CO2 emitted from conventional cement production and converts it into a mineral form that then becomes part of the cement itself. Last year, it secured a strategic investment from Microsoft’s Climate Innovation Fund to help finance its first commercial-scale facility, expected to produce 400,000 tons of cement per year. In return, the tech giant secured the right to procure Fortera’s low-carbon cement and its associated environmental attribute certificates — more of a reservation than the binding offtake contract it signed with Sublime.
Just one plant of this size “would meet all the hyperscalers’ needs easily,” Gilliam told me, underlining Finke’s point that data centers will by no means represent a cement company’s largest buyer long-term. “Most hyperscalers, you’re talking maybe upwards of 100,000 tons a year of requirements around cement, and that might even be at the upper end,” Gilliam explained. By comparison, standard cement plants typically produce about a million tons of product annually.
So while Gilliam and others are happy to ride the AI boom, they also recognize that data centers are likely more valuable as an early market signal than a long-term source of demand. Even now, it remains unclear whether the boom is even a net positive for the sector as a whole.
“The number of AI startups and the amount of money that’s been diverted into that space definitely changed the pool of investors that you can go to right now,” Gilliam told me. And that’s the core paradox. The data center boom has become one of the clean cement industry’s most promising early markets and one of its fiercest competitors for capital. Welcome to the AI economy.
The energy developer is backing off after a Heatmap report.
Clearway says it is backing off its plans to build a data center and gas power plant on federal land, days after Heatmap revealed the energy developer’s proposal.
Last week, I reported that Clearway asked the Trump administration’s Bureau of Land Management to swap a five year-old application for a solar farm’s permits with “a proposed data center and natural gas facility.” Clearway’s chief development officer John Woody had written in a letter to BLM dated April 3 that the swap was “the result of a shift in our internal development priorities” and intended “to better align with the goals of our Administration.” He also noted the plans were in “exploratory early stages.”
This news fit a trend. I obtained Clearway’s letter right after reporting on a different solar project on federal land that was being swapped for a data center. But it turns out, the company’s internal thinking continued to shift: on Friday, they reached out to me saying they are now nixing the data center and gas plant, after concluding it wasn’t the right call for their business.
“Since our initial filing, we’ve evaluated how to make the best use of this public land in a way that serves its intended purpose: the public interest. As a clean energy developer and operator, our focus in Nevada remains solar and battery storage,” Clearway said in a statement it provided to me from an unnamed spokesperson. “We are in the process of amending our application to reflect the state’s growing demand for low-cost, reliable energy.”
In addition, Clearway on Monday sent a letter to BLM formally alerting the agency it has no plans to build the data center, which it also provided to me.
When I first broke news of Clearway’s plans, I said it was an apparent aberration – they oversaw relatively few fossil projects and had never worked in data centers. I chalked this pivot up to yet another energy developer changing its tune with the winds of national politics. Now that the company is apparently sticking to its guns, I’m mostly just left wondering what happened here – and relieved some still remain committed to zero-emissions power in the booming business of electrons.