No AC, no refrigeration.

In the states, Puerto Rico is an easy-mode version of this. Very frequent blackouts recently. Not as bad as cuba though. And the federal government backstop semi guarantees that the lights will come back on, eventually.

I pray for the people of cuba, especially the elderly and those with medical problems.

No air conditioning in a tropical climate is no joke.

Hopefully in 50 years we'll look back on this from our solar+nuclear peaker grid, all hashing away to run the world reliably on a bitcoin standard, and wonder how such disfunction was even possible.