Giving ports the power to reduce their environmental impact.
Implementing the use of shore power for ships at berth greatly reduces air pollutants emitted by shipboard auxiliary diesel engines. Nitrogen oxides (NOx), sulfur oxides (SOx), diesel particulate matter (DPM) and greenhouse gases can adversely affect the health of port workers and local residents by exposing them to elevated cancer risk, respiratory infections, lung inflammation, and aggravation of pre-existing respiratory diseases such as asthma. Even on a regional level, port emissions contribute to air pollution and impact a region’s ability to attain protective air quality standards.
The Cochran Marine Shore Power solution addresses these environmental and public health challenges while also delivering key operational benefits to operators, port authorities, and utilities.
Every port has a unique set of circumstances that dictate the environmental benefit it will acheive by using a Cochran Marine Shore Power System. Factors such as the type of power generation used by the utility and the size and frequency of ships at the dock will contribute to a wide variance in emissions reduction from port to port.
A few examples of the benefits ports are realizing from Cochran Marine Shore Power installations include:
Port Metro Vancouver’s calculations show a net reduction of 3,139 tons of Green House Gas (GHG) emissions since the systems became operational in 2009 through 2011. Their numbers break down like this:
- 2009 – 11 connections: 300 tons
- 2010 – 44 connections: 1,521 tons
- 2011 – 35 connections: 1,318 tons
According to Bob Edwards, Port of Seattle Commission President in 2005, “The reduction in emissions is equal to taking 1,100 cars off the road for a full year.” That roughly equates to a 30% reduction in GHG emissions. Find more information on these calculations here.
During the 2005 summer cruise season it was estimated that the Cochran Marine Shore Power System saved 1,400 metric tons of fuel, reducing emissions of particulate matter (PMP) by 7.7 tons and sulfur oxide (SOx) by 203.5 tons.
22 tons of pollutants and 448 tons of Green House Gas Emissions were eliminated between the time the system was commissioned in November 2010 and April 16, 2011.
“[This] means each time a cruise ship connects to the shore power system, it’s equivalent to taking close to 400 passenger cars off the road for one day in pollution reductions. And, for greenhouse gasses, it’s equivalent to removing close to 1,300 passenger cars from the road for one day,” said Cody Hooven, Associate Environmental Specialist. Find more information on these calculations here.
The Port of San Francisco has estimated the reduction of harmful emissions for a 10-hour ship call, breaking them out into the specific elements eliminated from the air.
- 140 Pounds of diesel particulate material (PM)
- 1.3 tons of nitrogen oxides (NOx)
- 0.87 tons of sulfur oxides (SOx)
- 19.7 tons of carbon dioxide (CO2)