John many ports in California have this facility but look nearer to home Gothenburg.G/burg authorities recon that 10% of thei pollution is caused by ships using the port and they are going to great lengths to reduce it.They have been operating this system for quite some time with great success,ships that call to the port on a regular basis are kitted out especially to accept the shore connection.Many more ports throughout the world where it is densely populated are adopting this system,I believe it is more expensive than running the ships gear but so be it.Maybe somebody will put up the link to this subject.
Regards.
Jim.B.