The power grid in the U.S. is aging and already struggling to meet current demand. It faces a future with more people — people who drive more electric cars and heat homes with more electric furnaces.
Alice Hill says that's not even the biggest problem the country's electricity infrastructure faces.
"Everything that we've built, including the electric grid, assumed a stable climate," she says. "It looked to the extremes of the past — how high the seas got, how high the winds got, the heat."