How much can tidal energy end up scaling? It can definitely be a valuable resource in coastal communities, but like geothermal or hydropower it's naturally limited in location and scale based on where the inherent resources are available. 

Tidal Power is good but we aren't very excited about it here in Arizona and many other land locked areas. On the East and West Coast along with Hawaii who has been using it for years. It will be great to see how big this will become. 

    Small Islands are the most affected by Climate Change. They also should have the gresatest chance to run almost 100% on Tidal power. Maybe even Energy Positive and send some to inland areas like Arizona.