00:00What if a heat wave could shut down one of the world's biggest cities?
00:03This summer, that risk is real in New York.
00:06Energy experts at the New York Independent System Operator
00:10warn that extreme heat could push the power grid to its limits.
00:14As temperatures rise, millions of people turn on air conditioners at the same time.
00:19That sudden surge in demand can overload the system.
00:22And here's the scary part.
00:24If supply cannot keep up, blackouts could happen.
00:28Officials say the grid is stronger than before, but not invincible.
00:32A long, intense heat wave could still cause serious stress.
00:36To prepare, operators are lining up extra power supplies
00:39and asking people to reduce usage during peak hours.
00:42Because in extreme heat, every watt matters.
00:45So this summer, staying cool might also mean using less.
00:49Or risk the lights going out when you need them most.