People Behind the Power: Yvonne Hartman

May 7, 2026

Introducing Yvonne, a Consulting Engineer who has been with FirstEnergy for 19 years.

Since 2008, Yvonne has worked with our Transmission Line Loadability (TLL) database, focusing on Circuit Ratings — the information that helps us understand how much electricity our transmission lines can safely carry. She makes sure this data matches across all our key systems.

In her words:

“We deal with a lot of data, and I love working with data and creating applications to help make our jobs easier and more accurate.”

Yvonne’s passion for improving processes and building useful tools helps keep our system reliable and our work running smoothly.

Fun facts about Yvonne:

  • Favorite musician: I am a singer/songwriter and recording artist myself, but right now Phil Wickman is on the top of my list!
  • Favorite snack: Honey roasted peanuts, but I also love chocolate.
  • Favorite season: Summer – I love the warmth and the flowers in full bloom.