New updates have been reported about STAX Engineering.
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STAX Engineering has signed an exclusive service agreement with TransMontaigne Partners LLC to provide emissions-capture services for tankers calling at TransMontaigne’s Martinez and Richmond terminals in Northern California. Under the deal, STAX expects to deliver roughly 4,000 service hours annually, positioning the company as a key compliance partner ahead of the California Air Resources Board’s Jan. 1, 2027 at-berth regulation for tanker vessels.
The agreement anchors STAX more deeply in a critical segment of California’s fuel supply chain, as the two terminals together hold nearly 6 million barrels of storage capacity for refined petroleum and renewable fuels. Building on its 2024 launch, STAX now operates the state’s largest fleet of maritime emissions-capture barges and reports more service hours than any rival provider, reinforcing its first-mover advantage as tanker regulations tighten statewide.
Through its broader Northern California operations, STAX forecasts annual reductions of about 670 tons of nitrogen oxides, 31 tons of reactive organic gases, and 31 tons of particulate matter from at-berth tanker calls. The company’s mobile system, designed specifically for tanker safety and operational constraints, can cut at-berth emissions by up to 99% while allowing normal cargo loading and discharge to continue, which is critical for terminal throughput and schedule reliability.
For customers, STAX is pitching a cost of under one cent per gallon of gasoline moved through a terminal, with no vessel retrofits or major infrastructure investments required, a value proposition aimed at both tanker owners and terminal operators. CEO Mike Walker said tanker operators need a solution that is immediately deployable, operationally practical, and demonstrably safe, framing the TransMontaigne pact as evidence that large industry players are locking in compliance strategies well ahead of 2027.
The company already services tankers in Southern California for multiple partners, giving it a reference base that could support further contract wins as more terminals seek at-berth solutions. STAX reports more than 42,000 cumulative service hours across over 2,400 vessels and claims to have captured more than 330 tons of pollutants to date, metrics that may strengthen its case with regulators and counterparties.
Management signals plans to scale its fleet and deployment model across California, other U.S. ports, and eventually international markets, using its patented exhaust-capture system that fits ships without modification, even in congested berths. For executives overseeing fuel logistics, marine operations, or ESG commitments, STAX’s growing footprint suggests an emerging standard for tanker at-berth compliance, with implications for capital planning, contract structuring, and community air-quality expectations around key ports.