The Domestic Manufacturing Gap: Can America Actually Build the Clean Energy Supply Chain It Claims to Need?
In August 2022, President Biden signed the Inflation Reduction Act into law, and for a brief moment, it felt like America had finally gotten serious about clean energy manufacturing. The legislation contained the largest industrial policy intervention in American history—tax credits, loan guarantees, and domestic content requirements designed to seed a homegrown clean energy supply chain from raw material extraction through finished product assembly.
Two-plus years later, the announcement pipeline has been impressive. Dozens of gigafactory proposals. Solar panel assembly lines breaking ground in Georgia, Ohio, and Texas. Battery cell manufacturers committing to facilities in Michigan, Tennessee, and Kentucky. Wind component suppliers eyeing shuttered industrial sites in the Rust Belt.
But announcements are not factories. Factories are not supply chains. And supply chains are not energy independence.
Where America Actually Stands
To understand the scale of the challenge, it helps to examine where domestic manufacturing capacity currently sits relative to deployment demand.
Solar photovoltaics present perhaps the starkest picture. The United States installed more than thirty-two gigawatts of solar capacity in 2023, a record. Domestic manufacturing capacity for the solar modules used in those installations has grown substantially since the IRA's passage—but the upstream supply chain remains almost entirely offshore. Silicon wafers, the foundational substrate of crystalline solar cells, are produced overwhelmingly in China, which controls roughly ninety-five percent of global wafer manufacturing capacity. Polysilicon, the raw material from which wafers are cut, is similarly concentrated, with Xinjiang province alone accounting for more than forty percent of world supply before sanctions and supply chain concerns prompted some diversification.
American companies can assemble solar panels—attaching cells to backing sheets, adding frames and junction boxes—but assembling panels from imported cells is categorically different from manufacturing them. The value-added content of domestic assembly operations, and their resilience to geopolitical disruption, is substantially lower than the industry's public statements sometimes imply.
Wind energy presents a different but equally complex picture. The United States has a more established domestic wind manufacturing base than it does for solar—companies like GE Vernova and Vestas operate blade, nacelle, and tower manufacturing facilities in states including Colorado, South Dakota, and Iowa. But the transition to larger offshore turbines, which require longer blades, heavier towers, and specialized installation vessels, has exposed significant gaps. The Jones Act, which requires domestically built and crewed vessels for shipping between American ports, has created particular bottlenecks in the offshore wind sector, where purpose-built installation ships are scarce and enormously expensive to construct domestically.
Battery manufacturing, the third pillar of the clean energy supply chain, has attracted the most IRA-driven investment. But the battery supply chain is itself dependent on processed critical minerals—lithium, cobalt, nickel, manganese—whose refining and processing is dominated by China to an even greater degree than solar or wind component manufacturing. China controls roughly sixty-five percent of global lithium refining capacity and nearly ninety percent of cobalt processing, according to the International Energy Agency. Building domestic battery manufacturing without addressing upstream mineral processing is, to use a manufacturing metaphor, building the roof before the foundation.
The Emerging Domestic Industrial Base
None of this is to suggest that progress is illusory. Several companies are making genuine investments that deserve serious attention.
First Solar, the Tempe, Arizona-based manufacturer, operates what remains America's most vertically integrated domestic solar manufacturing operation, producing cadmium telluride thin-film panels at facilities in Ohio and increasingly in Louisiana. Unlike silicon-based panels, First Solar's technology relies on a distinct supply chain that is less dependent on Chinese polysilicon, giving the company a structural advantage in a market increasingly attentive to provenance. Its Alabama facility, announced in 2023 with IRA incentives, will add meaningful domestic capacity when fully operational.
In the battery space, Redwood Materials, founded by former Tesla Chief Technology Officer JB Straubel, is pursuing a domestic battery recycling and materials recovery business in Nevada that could eventually provide meaningful quantities of reclaimed lithium, cobalt, and nickel to American cell manufacturers. The company's approach—closing the loop on end-of-life battery materials rather than depending entirely on virgin mining—represents exactly the kind of supply chain innovation that long-term energy security requires.
Li-Cycle, Ascend Elements, and several other battery recycling ventures are pursuing similar strategies, though the sector remains in early commercial stages and faces the chicken-and-egg challenge of needing large volumes of end-of-life batteries to achieve economically viable throughput at a moment when the electric vehicle fleet is still young.
The Geopolitical Stakes
The urgency of supply chain diversification is not merely economic. It is strategic in ways that transcend the clean energy sector specifically.
China's dominance of critical mineral processing and clean energy component manufacturing represents a form of leverage that American policymakers have only recently begun to treat with appropriate seriousness. In 2023, Beijing imposed export controls on gallium and germanium, two materials used in semiconductor and solar applications, demonstrating its willingness to weaponize supply chain position in response to trade tensions. Similar restrictions on graphite, a key battery anode material of which China produces approximately sixty-five percent of the world's supply, followed shortly thereafter.
A clean energy transition that substitutes dependence on imported fossil fuels for dependence on imported manufactured components from a geopolitical rival does not constitute energy security. It constitutes a different variety of vulnerability—one that carries distinct risks but is no less real for being novel.
The Biden administration recognized this dynamic through the IRA's domestic content bonuses, which provide enhanced tax credits for projects using American-made components. The Trump administration, despite its general skepticism toward clean energy policy, has paradoxically maintained and in some respects intensified tariffs on Chinese solar and battery imports, creating a bipartisan—if ideologically incoherent—impulse toward supply chain localization.
Feasibility, Costs, and the Political Will Question
Critics of aggressive domestic manufacturing promotion argue, with some economic justification, that the United States is attempting to replicate by subsidy and mandate what China achieved through decades of strategic industrial policy, cheap labor, and scale economies that may simply be impossible to match domestically at competitive cost.
There is real substance to this concern. Building a domestic solar wafer industry from near-zero capacity would require enormous capital investment, sustained tariff protection, and a labor cost structure that would likely result in panels more expensive than imported alternatives for years or decades. In a market where project economics are driven by levelized cost of energy calculations, mandating expensive domestic components has real consequences for the pace of deployment.
But this framing presents a false choice. The question is not whether domestic manufacturing will be cost-competitive with Chinese manufacturing next year. It is whether the United States is willing to accept the strategic and economic risks of indefinite dependence on a concentrated, geopolitically exposed supply chain—and what level of premium it is willing to pay to mitigate those risks.
The IRA represented a substantial down payment on an answer to that question. Whether subsequent administrations will honor that commitment, and whether the private sector will match public incentives with the patient capital that genuine industrial development requires, remains the central uncertainty facing America's clean energy manufacturing ambition.
The supply chain of the future will not build itself. And the window for decisive action is narrower than the announcement pipeline suggests.