American solar cell manufacturing has a financing problem, and Suniva is the clearest illustration of it. The company filed the trade case that produced the 2018 solar tariffs. It went bankrupt anyway. Nine years later the company has raised $835 million to quadruple its American capacity, and the policy tool doing the work this time is not a tariff.
What Suniva Announced
Suniva closed a debt and equity round on September 8th. Specifically, it will fund a second U.S. solar cell plant in Laurens County, South Carolina. The facility covers 621,468 square feet and will hold 4.5 gigawatts of high efficiency monocrystalline silicon cell capacity. In total, that represents roughly $600 million in project investment.
| Detail | Figure |
|---|---|
| Capital raised | $835 million, debt and equity |
| Project investment | Approximately $600 million |
| Location | Laurens County, South Carolina |
| New capacity | 4.5 gigawatts of solar cells |
| Existing capacity | 1 gigawatt, Norcross, Georgia |
| Jobs | 564 advanced manufacturing positions |
| Timeline | Complete late 2027, full ramp 2028 |
Combined with the 1 gigawatt line already running in Norcross, Georgia, Suniva would reach 5.5 gigawatts. In addition, the round was led by Lion Point Capital, the company’s largest shareholder, with participation from I Squared Capital and Goldman Sachs Alternatives.
The Tariff That Did Not Save the Company
Notably, the history is the most instructive part of this announcement. In 2017 Suniva filed for bankruptcy and idled a Georgia factory that then ran about 450 megawatts of capacity. At the time, cheaper imported cells were undercutting it. Together with SolarWorld, it petitioned for relief under Section 201 of the Trade Act, and the resulting 2018 safeguard tariffs on imported cells and modules still shape this market.
The tariffs arrived. However, the company did not recover on them. That sequence is worth sitting with. Trade remedies raise a competitor’s price without putting capital on a balance sheet. Consequently, a manufacturer that cannot finance a line gains little from a more expensive import.
What Changed: Production Credits Instead of Trade Barriers
The Inflation Reduction Act created the Section 45X advanced manufacturing production credit, which pays per unit of output rather than taxing imports. Specifically, the credit is $0.04 per watt of capacity for photovoltaic cells, and $0.07 per watt for finished modules.
For example, run the arithmetic against this project. A fully ramped 4.5 gigawatt cell line producing at nameplate would generate roughly $180 million a year in 45X credits, against a project investment of about $600 million. Even allowing for real-world utilization well below nameplate, that is a materially different financing proposition than a tariff provides.
In other words, this is why the capital showed up. After all, a production credit is a predictable, per-unit revenue stream that a lender can underwrite. By contrast, a safeguard tariff is a time-limited policy that can be adjusted, as happened in 2022 when bifacial panels were excluded and the cell import quota was doubled.
Why Solar Cell Manufacturing Specifically
The United States has built module assembly capacity far faster than it has built solar cell manufacturing behind it. Domestic module capacity now runs near 65 gigawatts, while domestic cell capacity sits around 3.2 gigawatts according to the Solar Energy Industries Association.
In short, that gap is the entire commercial case. An American module plant without American cells still imports the most valuable part of its bill of materials. In addition, it cannot satisfy the domestic content thresholds that drive incentive eligibility for its customers. Consequently, cell capacity sells into a requirement rather than competing purely on price. We traced the same bottleneck one step further upstream in our breakdown of the U.S. solar wafer gap.
The Complication Nobody Should Skip
However, rules enacted under the One Big Beautiful Bill and effective January 1st, 2026 layer foreign entity restrictions on top of 45X. A specified share of the materials in a finished product cannot come from producers classified as prohibited foreign entities.
For a cell manufacturer, that reaches back into polysilicon, wafers, silver paste and equipment sourcing. Because those inputs are globally sourced by default, compliance is not automatic. The credit that makes this project financeable therefore constrains where its inputs may come from, which turns qualifying a compliant supply chain into part of the build rather than an afterthought. Suppliers who can document origin hold a real commercial advantage here.
Frequently Asked Questions
How much did Suniva raise and what is it building?
Suniva closed an $835 million debt and equity round on September 8th, 2026. As a result, it will build a 4.5 gigawatt solar cell plant in Laurens County, South Carolina. The facility spans 621,468 square feet and is expected to create 564 jobs.
Why did Suniva go bankrupt in 2017?
Suniva idled its Georgia factory and filed for bankruptcy, because it could not compete with lower priced imported cells. It then petitioned, with SolarWorld, for Section 201 safeguard relief, which produced the 2018 tariffs on imported solar cells and modules.
What is the Section 45X tax credit worth for solar cells?
Section 45X pays $0.04 per direct current watt for photovoltaic cells, and $0.07 per watt for finished modules. At nameplate output, a 4.5 gigawatt cell line would generate on the order of $180 million a year in credits.
Why does the United States import solar cells?
Domestic module assembly capacity has outgrown domestic solar cell manufacturing. Capacity for modules reached roughly 65 gigawatts while domestic cell capacity sits near 3.2 gigawatts. As a result, most American module plants rely on imported cells, making cells the missing step in the domestic supply chain.
How much solar cell capacity will Suniva have in total?
The new South Carolina plant adds 4.5 gigawatts to the 1 gigawatt line already operating in Norcross, Georgia, bringing Suniva to 5.5 gigawatts. Completion is expected in late 2027 with full ramp in 2028.
What are the new foreign entity rules affecting 45X?
In brief, provisions effective January 1st, 2026 restrict how much of a finished product’s material content may originate with prohibited foreign entities. For cell manufacturers this affects polysilicon, wafer, consumable and equipment sourcing decisions.
The Bottom Line
Two policy tools were aimed at solar cell manufacturing nine years apart. Only one of them financed a factory. For suppliers and economic developers, the lesson is that per-unit production support attracts capital in a way trade protection does not, and the projects it attracts come with documentation requirements attached. Track where that capital is landing in our U.S. Manufacturing Investment Tracker, or catch the full IndustrialSage Headlines Ep. 33.
Author: Wes Garrett
Content and Growth Marketing Producer | From Strategy to Execution, Delivering Impactful Media Solutions and Client Success
