> I wouldn’t bother with land fills for a while. First on my list is standardizing electrical power at docks for container ships.

There is some sort of effort going on, but IIRC it stalled as a consequence of covid [1]. Biggest problems are frequency differences (the entire world but the Americas runs at 50 Hz, but maritime+America runs at 60 Hz), and the fact that for the many megawatts a ship can use you need extremely high voltages to get that transferred at reasonable currents, which is a safety challenge on its own [2].

[1] https://sustainableworldports.org/wpcap/wg-3/our-mission/

[2] https://sustainableworldports.org/wp-content/uploads/Landsto...