Second Chemical Spill Reported at Silfab Solar Facility in York County

The latest leak of hydrofluoric acid comes just two days after a previous spill of potassium hydroxide at the same site.

Published on Mar. 5, 2026

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York County officials reported a new chemical spill at the Silfab Solar facility in Fort Mill, South Carolina on Thursday morning. The leak involved hydrofluoric acid, which was contained within the site's secondary containment system. This is the second chemical spill incident at the Silfab Solar plant this week, following a larger spill of potassium hydroxide on Tuesday.

Why it matters

The repeated chemical spills at the Silfab Solar facility have raised concerns about the company's safety protocols and environmental practices. York County officials have expressed disappointment over the latest incident and stated they will continue to coordinate with state environmental regulators to investigate the matter.

The details

According to the county's Facebook post, the hydrofluoric acid leak was contained within the facility's secondary containment system and did not pose a threat to public safety. However, the latest spill comes just two days after a larger incident on Tuesday where over 300 gallons of potassium hydroxide, initially reported as more than 1,500 gallons, was spilled at the Silfab Solar site.

  • The latest hydrofluoric acid leak was reported on Thursday, March 5, 2026.
  • The previous potassium hydroxide spill occurred on Tuesday, March 3, 2026.

The players

Silfab Solar

A solar panel manufacturing company with a facility located in Fort Mill, York County, South Carolina.

York County

The local government authority that oversees the area where the Silfab Solar facility is located and has been coordinating with state environmental regulators in response to the chemical spills.

South Carolina Department of Environmental Services

The state regulatory agency responsible for investigating the chemical spills at the Silfab Solar facility.

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What they’re saying

“We have been assured the hydrofluoric acid is being contained within secondary containment, designed to capture chemicals released inadvertently.”

— York County (York County Facebook post)

“We are incredibly disappointed that another issue at Silfab Solar has occurred. We will continue to work with the South Carolina Department of Environmental Services, in their role as the regulatory agency, and support their investigation however possible.”

— York County (York County Facebook post)

What’s next

The South Carolina Department of Environmental Services will continue its investigation into the chemical spills at the Silfab Solar facility in York County.

The takeaway

The repeated chemical spills at the Silfab Solar plant have raised serious concerns about the company's safety protocols and environmental practices. Local and state authorities will need to closely monitor the situation and ensure proper containment and cleanup measures are taken to protect the surrounding community.