National Science Foundation
It only takes a power outage of a few minutes in the middle of a busy workday to drive home the hazards of relying on an energy infrastructure rooted in the Industrial Age. Without the electricity delivered over the nation's power grid, commerce would grind to a halt, communication networks would fail, transportation would stop and cities would go dark.
Simply put, nothing would work.
Plus, blackouts aren't easy to contain. Because the power grid is a vast interconnected network, the failure of one part can have a cascading effect, triggering successive outages down the line.