The latest authorization brings the port's contribution to the At-Berth Clean Fuels program to $950,000 this year.
Carriers that burn low-sulfur fuel in their auxiliary engines at berth qualify for an incentive of $2,250 per vessel call to help offset the increased costs associated with burning low-sulfur fuel.
Nine container and cruise lines participating in the program have received incentive money for 350 vessel calls so far this year, and the total is expected to reach 400 vessel calls by the end of the year.
Since the program began last year, the port estimates it has reduced sulfur dioxide emissions by 340 metric tons. Low-sulfur fuel reduces sulfur dioxide emissions 80 percent and diesel particulate matter emissions 60 percent compared to traditional bunker fuel.