Nearly 90 percent of Puerto Rico is still without power more than two weeks after Hurricane Maria. Authorities say it will take months to restore electricity, as the storm destroyed the power grid.
With the price of solar panels falling, more municipalities and homeowners are installing them. But having solar panels doesn't mean you won't lose power in a blackout — at least not yet.
Ten years after a cascading power outage across a broad section of the U.S. and Canada, utility operators and regulators are concerned about another blackout scenario: a massive cyberattack that could threaten the U.S. electric grid.