Hurricane Dorian could wipe out power to millions in Florida, some for weeks

FPL has invested nearly $4 billion to make the grid stronger, smarter and more storm-resilient since 2006. The Florida Public Service Commission mandated certain improvements, such as replacement of rotted wood power poles, following multiple hurricanes in 2004 and 2005 that left customers out of power for weeks. Grid improvements have included installation of sturdier power poles, putting some critical utility lines underground, and adding “smart” devices to mitigate flooding, which can cause grid damage.