US Solar Cell Manufacturing: Top 10 Firms Like Qcells Add 8.6 GW Capacity Amid Vertical Integration Push (2024-2026)

The U.S. solar industry is undergoing a foundational shift from module assembly to a vertically integrated domestic supply chain. Analysis of commercial activity from 2024 to mid-2026 reveals a concerted effort, spurred by federal incentives, to onshore the production of critical upstream components, including solar cells, wafers, and ingots. This strategic move aims to enhance supply chain security and capture greater value within the United States. Key industry leaders are making multibillion-dollar investments to build out this capacity, with companies like First Solar targeting a massive 14 GW of total domestic manufacturing and Qcells executing on an 8.6 GW, fully integrated production ecosystem in Georgia. The emerging theme for 2025 and beyond is a competitive race to establish not just module lines, but the high-value cell and wafer manufacturing capabilities that underpin them, with a notable focus on advanced and next-generation photovoltaic technologies to secure a long-term advantage.

1. First Solar Leads with 14 GW Capacity Target

Company: First Solar
Announced Capacity: 14 GW total domestic capacity by 2026.
Application: Vertically integrated manufacturing of thin-film Cd Te solar modules. The expansion includes a new 3.5 GW factory in Alabama, a $1.1 billion facility in Louisiana, and a planned 3.7 GW plant opening in 2026.
Source: Despite everything, US solar manufacturing continues to power up – 2

2. SEG Solar Announces 10.6 GW Total Module Capacity

Company: SEG Solar
Announced Capacity: 10.6 GW total planned U.S. module capacity.
Application: Solar module manufacturing. The company announced a third U.S. factory in June 2026, a 4.6 GW facility, to reach its total capacity goal.
Source: SEG Solar Announces Third U.S. Factory, Becoming …

3. Qcells Builds America’s First Fully Integrated Solar Supply Chain

Company: Qcells (Hanwha)
Announced Capacity: 8.6 GW total module capacity, with 3.3 GW each of ingot, wafer, and cell production.
Application: Fully vertically integrated solar manufacturing from raw polysilicon to finished modules. Its Cartersville, Georgia factory began cell production in June 2026.
Source: Qcells starts cell production at Georgia factory in milestone …

4. Canadian Solar Onshores 6 GW of HJT Cell Production

Company: Canadian Solar
Announced Capacity: 6 GW solar cell facility.
Application: Manufacturing of high-efficiency heterojunction technology (HJT) solar cells. The first phase of its Jeffersonville, Indiana plant opened in October 2025.
Source: First Solar to open new 3.7 GW US manufacturing plant in …

5. Suniva Expands Domestic Cell Capacity to 5.5 GW

Company: Suniva
Announced Capacity: 4.5 GW new facility, bringing total to over 5.5 GW.
Application: Solar cell manufacturing. The U.S.-owned company announced a new facility in South Carolina in April 2026 to complement its existing 1 GW capacity in Georgia.
Source: Suniva announces 4.5-GW solar cell facility in South Carolina

6. T 1 Energy Invests $850 Million in a 5 GW Texas Cell Plant

Company: T 1 Energy
Announced Capacity: 5 GW solar cell facility.
Application: Solar cell production. The $850 million investment in Milam County, Texas, is slated for completion by 2026.
Source: T 1 Energy to Boost Manufacturing Solar Cells in the US

7. Waaree Energies Doubles Texas Module Factory to 3.2 GW

Company: Waaree Energies
Announced Capacity: 3.2 GW solar module factory.
Application: Solar module assembly. A $200 million expansion of its Brookshire, Texas facility was approved in April 2025.
Source: Houston Attracts New Solar Manufacturing Investment

8. ES Foundry Completes 2 GW Cell Factory Expansion

Company: ES Foundry
Announced Capacity: 3 GW total U.S. solar cell capacity.
Application: Solar cell manufacturing. The company completed a 2 GW expansion of its Greenwood, South Carolina factory in July 2026.
Source: ES Foundry Completes 2 GW Greenwood Factory …

9. Solx & Caelux Partner for 3 GW of Perovskite Tandem Modules

Company: Solx & Caelux
Announced Capacity: 3 GW five-year agreement.
Application: Manufacturing of next-generation perovskite-on-silicon tandem solar modules. This partnership, announced in April 2026, is a key step in commercializing advanced U.S.-made solar technology.
Source: In Major US Manufacturing Milestone, Solx and Caelux …

10. Mission Solar Adds 2 GW of Cell Production in Texas

Company: Mission Solar
Announced Capacity: 2 GW of new solar cell production.
Application: Vertical integration of solar cell and module manufacturing. The $265 million investment at its San Antonio, Texas campus was announced in March 2025.
Source: Mission Solar Expands U.S. Solar Cell Manufacturing

Table: U.S. Solar Manufacturing Capacity Expansions (2024-2026)

Vertical Integration, Companies Pursue End-to-End Solar Supply Chains

The clear pattern among these investments is a strategic pivot towards vertical integration. For years, U.S. solar manufacturing was largely confined to module assembly, relying heavily on imported cells and wafers. Now, companies are aggressively moving to control more of the value chain. Qcells‘ massive Georgia complex is the most prominent example, designed to produce everything from polysilicon ingots to finished modules under one vertically integrated ecosystem. This strategy significantly de-risks supply chains from geopolitical tensions and logistical bottlenecks. The trend is not limited to one player; Mission Solar‘s $265 million investment to add 2 GW of cell production to its Texas module plant and Suniva‘s focus on scaling domestic cell capacity demonstrate a broader industry recognition that true supply chain independence requires control over upstream components.

US Solar Module Capacity Soars, But Upstream Bottlenecks Persist
U.S. solar module manufacturing capacity is projected to reach 82.9 GW with announced projects, reflecting robust downstream growth. However, upstream components like polysilicon (33 GW), ingots (8.3 GW), and wafers (13.3 GW) show significantly lower capacities, creating a glaring supply chain bottleneck. This disparity highlights continued reliance on imports for critical raw materials, despite increasing domestic module assembly.

IRA Incentives Fuel Module Assembly, Neglecting Upstream Localization
The U.S. module capacity surge, driven by IRA incentives, masks a critical vulnerability: only 8.3 GW of ingot capacity exists for 82.9 GW of future module capacity. This severe bottleneck at the raw material stages means downstream manufacturers remain exposed to international geopolitical risks and price volatility for key components, hindering genuine energy independence and “Made in America” objectives.

US Solar Manufacturing Capacity Surges 300% Post-IRA
U.S. solar module manufacturing capacity surged from ~6,500 MW in Q1 2021 to 27,181 MW by Q1 2024, a nearly 300% increase. The Inflation Reduction Act’s (IRA) passage in Q3 2022 directly correlates with this exponential growth, as capacity more than doubled in the following 18 months.

(Source: USA Solar Panel Manufacturing Capacity Soared 71% in Q1 2024 – CleanTechnica)

The Southeast, A US Solar Manufacturing Hub Led by Georgia

A distinct geographic trend is the emergence of the Southeast as the epicenter of this manufacturing renaissance. Georgia, in particular, stands out with Qcells‘ massive integrated factory and Suniva‘s headquarters. Neighboring South Carolina is also a major beneficiary, attracting a new 4.5 GW cell facility from Suniva and a 2 GW expansion from ES Foundry. This regional clustering is driven by a combination of strong state-level incentives, access to a skilled manufacturing workforce, and robust port and logistics infrastructure. While the Southeast is a clear leader, significant investments are also taking root elsewhere. Texas is developing its own hub with projects from Waaree Energies, Mission Solar, and T 1 Energy, while the Midwest is attracting advanced manufacturing, evidenced by Canadian Solar‘s HJT cell plant in Indiana and First Solar‘s long-standing Ohio operations.

Canadian Solar Advances 6 GW of High-Efficiency HJT Cell Production

These expansion announcements reveal a multi-layered approach to technology maturity. The bulk of the new capacity, represented by players like Qcells and First Solar, involves scaling proven, bankable technologies—crystalline silicon (c-Si) and cadmium telluride (Cd Te), respectively—to industrial gigawatt scale. This forms the foundation of the onshoring effort. At the same time, there is a strong push to manufacture more advanced, high-efficiency technologies domestically. Canadian Solar‘s 6 GW HJT cell facility is a prime example, moving a high-performance cell architecture into mass production on U.S. soil. The most forward-looking signal comes from the partnership between Solx and Caelux. Their 3 GW agreement for perovskite-on-silicon tandem modules marks a critical step toward commercializing next-generation PV technology, indicating the U.S. is not only reshoring existing tech but is also building a domestic manufacturing base for the innovations of tomorrow.

8.6 GW, Qcells’ Full Supply Chain Sets 2026 Competitive Benchmark

The single most critical strategic action for solar manufacturers in 2026 will be to secure a definitive position within the rapidly forming domestic upstream supply chain. This can be achieved either through direct capital investment in cell and wafer production or via long-term offtake agreements with the new merchant cell suppliers. Companies that remain solely focused on module assembly using imported cells will face significant margin compression and heightened supply chain vulnerability as the industry benchmark shifts toward domestic vertical integration.

• The start of cell production at Qcells‘ Georgia facility in June 2026 marks the operational reality of a fully integrated U.S. solar supply chain, establishing a new competitive standard for cost, logistics, and patriotic branding.
• SEG Solar‘s June 2026 announcement of a new 4.6 GW factory, bringing its planned U.S. capacity to 10.6 GW, signals that immense scale in module assembly remains a potent competitive advantage, creating a path for players who can secure reliable upstream components.
• The emergence of dedicated cell manufacturers, such as Suniva adding a 4.5 GW plant and T 1 Energy building a 5 GW facility, confirms the development of a robust domestic merchant cell market, offering a vital supply alternative for module assemblers not pursuing full vertical integration.
• The Solx and Caelux agreement in April 2026 to produce 3 GW of advanced perovskite tandem modules serves as a clear signal that technology differentiation is a key emerging battleground. Competitors must monitor such partnerships, which have the potential to leapfrog current efficiency standards and disrupt the market.

The questions your competitors are already asking

This report covers one angle of the US solar supply chain onshoring. The questions that matter most depend on your work.

• US solar factories under construction
• US polysilicon and wafer production capacity
• Perovskite solar commercialization timeline
• Utilities buying US made solar panels

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