The Power Grid’s Hidden Weak Point: Why a Few Failed Transformers Could Trigger a Much Bigger Crisis

For this TechMobility Topics segment, we take a hard look at a growing infrastructure vulnerability beneath America’s everyday power supply: the aging, largely hand-built transformers that keep the U.S. electric grid moving.These massive pieces of equipment are not easily replaced. Long manufacturing lead times, limited domestic capacity, and the interconnected nature of substations mean that failures at just a few critical points could create consequences far beyond an ordinary localized blackout. We explore why the grid’s most important weak spots may be the ones most people never see—and what is at stake when replacement parts cannot arrive quickly.