Explore how energy systems stay reliable, resilient, affordable, and secure. Learn about resource adequacy, security of supply, energy dependence, diversification, strategic reserves, critical infrastructure, and the policies and technologies that keep energy available when it matters most.
A power system can have more installed capacity than peak demand and still face electricity shortages. Resource adequacy asks the question that actually matters: will enough generation, storage, imports, and flexible demand be available when the system needs them most?
The energy trilemma sounds like something invented by a consultant in a navy suit. It isn’t. It’s the very real mess of trying to make energy reliable, affordable, and clean at the same time. Drop one ball, and somebody pays for it—usually with money, blackouts, or a hotter planet.
Energy security sounds like policy jargon. It isn’t. It’s the hidden system that keeps your lights on, your phone charged, your heat running, and your economy moving. This guide breaks down what energy security is, why it exists, how it works, what threatens it, and why it matters more today than most people realize.