The island is bankrupt and in economic turmoil. They'd make more money installing this electric grid in a booming US state, or a country like Germany/UK/Australia. Corporations don't bother with poorly run states like Puerto Rico.

but it could be sold as an example, a test case, if you will.

And yeah, I know it will never happen.

If they were a state, it could be done. Sad to say it, but the only Caribbean islands with any sort of good infrastructure and economies are tax havens. :/ There just isn't a whole hell of a lot going on down there, economically.

sad, isn't it?

That companies in the field you mention would take well over a month to design said infrastructure. Then the would have to assemble and train people.

I like your thoughts but they will do what gets power up the quickest.