Empowered: Energy Heroes

A microgrid in Sonoma, Calif., where researchers show how to create energy from the sun.

How the electric grid was designed to work more than 100 years ago and the modern challenges it faces; a microgrid in the South Side of Chicago keeps the lights and heat on during a winter storm; batteries and fuel cells replace backup generators.

Rep. Pat Haddad writes a bill to bring offshore wind to Massachusetts, making the town of Somerset home to North America's first offshore wind manufacturing plant.

Vermont generates all of its electricity without burning fossil fuels by using its own natural resources, including the waste from its two largest industries.