Canada is one of the few countries to have begun to harness tidal energy; the country's only tidal station is located in Nova Scotia, in the Bay of Fundy. Our oceans are a vast source of energy that can be harnessed to produce different forms of usable energy including tidal and wave energy.
The Annapolis tidal barrage has been operating from 1984 2019
and the other company has filed for bankruptcy
'It is very unfortunate': Tidal power developer files for bankruptcy | CBC News
here are some links
FORCE
energy.novascotia.ca/sites/default/files/Tidal Energy Brochure Final April 2013.pdf
I believe the best ocean generating system would be to harvest ocean currents
Note: salt water and electricity don't combine very well