ES Foundry completes 2 GW expansion
Analysis based on 9 articles · First reported Jul 07, 2026 · Last updated Jul 07, 2026
The expansion strengthens the domestic solar supply chain, reducing reliance on imported cells and supporting compliance with domestic content incentives. It positions ES Foundry to capture market share as tariffs on imported cells are expected to level costs.
ES Foundry, a U.S. solar cell manufacturer, announced the completion of a 2 GW expansion at its Greenwood, South Carolina factory, bringing total annual capacity to 3 GW. The first cell came off the new production line on July 7, 2026. The facility produces crystalline bifacial PERC solar cells. The expansion supports domestic content requirements under the One Big Beautiful Bill Act and addresses a critical gap in the U.S. solar supply chain. The company has hired over 400 people in Greenwood County. ES Foundry is now the second-largest silicon cell manufacturer in the U.S., behind Hanwha Group — Qcells.
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