Description:
The world’s first electric hydrofoil service is officially in operation! Passengers are now welcome onboard the Candela P-12 ‘Nova’, traveling from Ekerö center to Stockholm City Hall.
Cutting travel times in half and eliminating emissions, we’re unlocking the potential of our waterways.
The P-12 will run three times a day as a pilot project in collaboration with @regionstockholm, and the regular SL fare applies

That video is from a year ago, and the Candela P-12 pilot project in Stockholm is done.
This video (watchable at 1.25x) from Everything Electric Tech describes a followup visit to Stockholm and a look at other deployments around the world (including Mumbai and the Maldives Islands). As is so common, one problem with deployment is old-school permitting processes that have old tech and old thinking built into them.