From Bloomberg technology: A Storm’s Never Destroyed a Grid Like Maria Ruined Puerto Rico’s

• Parts of island may be without power for weeks, if not months
• Utility crews will restore service to critical resources first

Another take on this same topic, from the Wall St. Journal: Puerto Rico’s Power Woes Are Decades in the Making. Years of underinvestment and massive debts left the energy grid vulnerable

An another article on a likely outcome of the extended outage. As might be expected, a major outmigration is expected. See this article in the Wash Post on Sept. 23 titled Thousands Could leave PR for Good.