Port of Hueneme reveals second emissions capture and control barge

The Port of Hueneme on Wednesday (16 July) unveiled its second STAX Engineering emissions capture and control barge. 

Just eight barges operate in all of California, with the Port of Hueneme operating two–one at each terminal.

“The arrival of the second barge, known as STAX 6, underscores the Port’s commitment to sustainability and further positions the Port as a national leader in clean air operations and zero emissions infrastructure,” the port said. 

STAX Engineering’s patented mobile emissions capture technology attaches to vessels without requiring retrofits. Connecting directly to a vessel’s exhaust pipe, the exhaust is funnelled into a barge-based purification system, where pollutants are removed—capturing 99% of particulate matter (PM) and 95% of nitrogen oxides (NOx)—before being released as a purified gas.

This is especially important for operating ports like Hueneme, which borders several residential communities.

“The arrival of STAX 6 means we now serve every commercial terminal at the Port. It’s a major milestone not just for us, but for clean air progress at ports everywhere,” said Mike Walker, CEO of STAX Engineering.

“We’re not just helping partners meet regulations. We’re building toward a zero-emissions future by integrating best-in-class carbon capture into the most comprehensive emissions control system on the market.”

The Port’s partnership with STAX Engineering and investment in this technology are two of many steps Hueneme is taking on a strategic ZE2030 roadmap that will keep it on the path to become the nation’s first zero-emissions port by the end of the decade.

“Commerce and sustainability can go together, and we’re proving it at the Port of Hueneme. Our collective efforts will protect the Port’s role as a vital economic engine and safeguard community health at the same time,” said Kristin Decas, CEO, Port of Hueneme.

Photo credit: Port of Hueneme
Published: 21 July, 2025