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U.S. solar capacity surges 750% to nearly 70 GW
Estimated reading time: 4 minutes · Last updated:
By June 2026 U.S. solar module manufacturing capacity had reached nearly 70 gigawatts; that contrasts with an earlier base of about 8 gigawatts, representing growth of over 750%. The surge reflects a wave of factory openings across the South and Midwest tied to Inflation Reduction Act tax credits and related private investment. New plants include Qcells’ ingot-to-panel production in Cartersville, Georgia, and Translucent Solar’s 281,000-square-foot factory in Summerville, South Carolina, which the company says will support 167 jobs and 1.2 gigawatts of annual capacity by the end of 2026. Those figures show who is building, why it matters and the limits that remain.
Solar plus storage made up over 80% of all new additions to the US grid last year. More than gas, more than nuclear and obviously more than coal.
Augustus Rylands, managing director
Key takeaways
- Scale of growth: As of June 2026 U.S. module manufacturing stood at nearly 70 gigawatts, compared with around 8 gigawatts previously — an increase of more than 750%.
- Notable new plants: Qcells began full ingot-to-panel production in Cartersville, Georgia, and Translucent Solar opened a 281,000-square-foot plant in Summerville, South Carolina.
- Translucent Solar forecast: Translucent Solar expects its Summerville site to support 167 jobs and about 1.2 gigawatts of annual capacity by the end of 2026.
- Share of new capacity: As Augustus Rylands put it, "Solar plus storage made up over 80% of all new additions to the US grid last year."
Table of contents
Policy and investment pushed new factories into production
The rapid expansion is rooted in policy incentives and fresh private capital. Inflation Reduction Act tax credits and related manufacturing incentives reduced the financial gap for U.S. production, encouraging companies to repurpose existing industrial space or build new plants in the South and Midwest.
Qcells, First Solar and T1 Energy, among others, have tied their near-term capacity plans to those incentives. That alignment has shortened the lead time for adding domestic supply compared with a fully greenfield build-out financed solely by private investment.
Which plants are running and what they add
Company announcements highlight a mix of cell and module projects. Qcells opened full ingot-to-panel production in Cartersville, Georgia, calling it the first U.S. plant of that integrated type in more than a decade. Translucent Solar’s Summerville, South Carolina, factory covers 281,000 square feet and is expected to deliver about 1.2 gigawatts of annual capacity and 167 jobs by the end of 2026.
Other facilities mentioned include SEG Solar in Texas, Canadian Solar in Indiana and ES Foundry in South Carolina; the article does not give their specific rated capacities. The net effect is a much deeper domestic supply pool for utilities, installers and developers, even if unit costs remain higher than the largest overseas producers.
What this means for prices, supply chains and the grid
A larger U.S. manufacturing base can shorten lead times and reduce reliance on lengthy import supply chains, helping utilities and project developers manage schedules and risk. Qcells and other manufacturers say U.S.-made panels remain generally pricier than panels produced in China because Chinese firms operate at much larger scale, so the new domestic capacity is unlikely to exert immediate downward pressure on module prices.
Broader benefits include local job creation and easier access for homeowners and smaller installers. The story also flags the tradeoffs: tariffs, scale and the time required to reach higher domestic production volumes will influence how quickly consumers see lower installed-system prices.
| Company | Location | Capacity / notes |
|---|---|---|
| Qcells | Cartersville, Georgia | First U.S. ingot-to-panel facility in more than a decade (capacity not specified) |
| Translucent Solar | Summerville, South Carolina | 281,000-square-foot plant; expects about 1.2 gigawatts annual capacity and 167 jobs by end of 2026 |
| SEG Solar | Texas | New module/cell facility (capacity not specified) |
| Canadian Solar | Indiana | New module/cell facility (capacity not specified) |
| ES Foundry | South Carolina | New facility (capacity not specified) |
Cases for and against continued domestic scale-up
The case for
- Federal tax credits and manufacturers’ willingness to reuse industrial sites can keep new plants coming, expanding near-term U.S. capacity.
- A bigger domestic supply chain should shorten delivery times and reduce some project scheduling risks for utilities and developers.
The case against
- U.S. panel production faces higher unit costs because Chinese manufacturers retain scale advantages, limiting how quickly retail prices can fall.
- Trade policy and any future tariff shifts could raise costs or deter some supply-chain actors, slowing deployment despite new capacity.
What to be careful about
- Higher per-unit manufacturing costs in the U.S. could keep overall installed-system prices elevated, slowing adoption despite greater factory supply.
- Policy changes to tariffs or tax incentives would materially affect the economics of plants built to rely on current incentives.
- The article lists several new facilities without published rated capacity or confirmed commercial-operation dates, leaving near-term output uncertain.
The bottom line
The U.S. manufacturing footprint for solar modules has grown fast enough to change the conversation: domestic capacity approached 70 gigawatts by June 2026 after a period near 8 gigawatts, and firms from Qcells to Translucent Solar have opened or expanded plants. That surge improves supply-chain resilience, creates local jobs and shortens delivery times for projects, but it does not erase the scale-driven cost gap with the largest overseas producers. The near-term outcome will depend on actual output from the new factories, any changes to trade policy and whether production can scale further without raising unit costs.
What to watch
- Watch for announcements from Translucent Solar about the Summerville plant’s first commercial shipments; no date has been set.
- Watch for production-rate updates from Qcells on its Cartersville ingot-to-panel line; no date has been set.
Frequently asked questions
How much has U.S. solar manufacturing capacity grown recently?
Industry capacity data show that, by June 2026, U.S. solar module manufacturing had climbed to almost 70 gigawatts; it had been about 8 gigawatts earlier, a rise exceeding 750%.
Which new U.S. plants are highlighted?
The piece names Qcells’ new ingot-to-panel line in Cartersville, Georgia, and Translucent Solar’s 281,000-square-foot factory in Summerville, South Carolina, which the company expects will deliver about 1.2 gigawatts of annual capacity and 167 jobs by the end of 2026.
Will domestic production push module prices below imported panels soon?
Qcells and other companies note that domestically produced panels are costlier than those from Chinese factories due to scale differences, so lower prices may not materialize right away despite the rise in U.S. factories.
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