Duke Energy, number 126 on the Fortune 500, delivers electricity to nearly 8 million customers in the Southeast and Midwest. A fair amount of that electricity remains generated by coal-fired plants. Since Lynn Good became CEO in 2013 she's retired 52 of these plants, but there's still work to be done. And with an increased focus on climate change coming from government, investors, employees and customers - the push to reach net zero is stronger than ever.

Good tells Leadership Next's Alan Murray how the company is approaching this challenge. They also discuss cybersecurity threats, activist investors, and how the job of CEO has changed over time.