Chief Environmental Officer,
Head of eMission Solutions Division
Green Mountain Energy Company
Gillan Taddune has been with Green Mountain Energy Company since March 2000. She joined the company as manager of market development where she was responsible for developing rules to implement Senate Bill 7, Texas' deregulation law.
In February 2001, Gillan was promoted to vice president, general manager of Green Mountain Energy Company's Texas region. Gillan was responsible for launching the company’s entry into the newly de-regulated retail electricity market, strategic planning, sales, operations and overall management of the P&L for the business. Gillan became president of the Texas region in November 2001.
Gillan was named to the position of chief information officer (CIO) in January 2003 and then promoted to senior vice president of operations in May 2003. During this time, Gillan oversaw all information technology operations, software development, technology planning, billing, and customer care operations for Green Mountain Energy Company.
Gillan was appointed to the position of Chief Environmental Officer in April 2004. In this position, Gillan is responsible for renewable supply procurement, spearheading the company's environmental vision, developing and implementing sustainable business practices and continuing an ongoing commitment to help develop new renewable facilities.
In early 2006, building on her responsibilities as Chief Environmental Officer, Gillan was tapped to launch eMission Solutions. A division of Green Mountain Energy Company, eMission Solutions delivers innovative and cost effective carbon reduction solutions to commercial and institutional sector clients seeking to improve their environmental position.
Prior to joining Green Mountain Energy Company, Gillan served two years as a chief economist in the Electric Utility Restructuring Division of the Public Utility Commission of Texas. During this period, she served as project lead for the Texas Renewable Portfolio Standard which included the development and implementation of a tradable green tag program for the state. She also served as a lead witness in several utility cases where she represented the public interest on issues relating to utility rates, energy efficiency programs, and renewables.
Gillan has received awards from the Texas Renewable Energy Industries Association (TREIA) and the American Wind Energy Association (AWEA) for her leadership and achievements. Gillan has served on the Board of Directors for the Electric Reliability Council of Texas (ERCOT), the Texas Energy Education Development Association and the Texas Renewable Energy Industries Association. In 2001 Gillan served on the ERCOT Technical Advisory Committee, representing the Retail Electric Provider voting segment. Gillan earned a bachelor's degree from the University of Vermont in economics and German and a master's degree in economics/energy policy from Johns Hopkins University in 1997.