What to know about the electrical grid failure that plunged Cuba into darkness The Associated PressCuba suffers third setback in restoring power, millions still in the dark ReutersCuba suffers third major setback to restoring national grid - leaving millions in the dark Sky NewsCuban electrical collapse causes island-wide blackout, paralyzes economy The Washington PostCuba Suffers Second Power Outage in 24 Hours, Realizing Years of Warnings The New York Times