Board of Directors
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Michael Westbrock
Tulsa, Energy Marketing
Chairman, Appointed by the Governor of Oklahoma
Term: 12/4/20 – 8/29/25
Committees: Assets, Fuel & Long‐Range Planning
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Chris Meyers
Oklahoma City, GM Okla. Assoc. of Electric Cooperatives
Chairman-Elect, Designee of the Oklahoma Association of Electric Cooperatives
Term: 8/29/10 – n/a
Committees: Fuel & Long ‐Range Planning
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-5.png)
Dwayne Elam
Wagoner, City of Wagoner Administrator
Municipal Electric Systems of Oklahoma Designee Representing municipal customers
Term: 1/1/18 – n/a, Ex officio
Committees: Audit, Finance, Budget Policy and Compliance; Fuel & Long‐Range Planning
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Paul Matthews
Edmond, Plumbing, Utilities, Real Estate
Appointed by Oklahoma Senate President Pro Tempore At-large director
Term: 8/30/22 – 8/29/27
Committees: Asset; Compensation & Marketing; Power Capacity Utilization Subcommittee
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder.png)
Charles Sublett
Tulsa, Attorney
Appointed by the Governor of Oklahoma
Term: 8/30/22 – 8/29/24
Committees: Audit, Finance, Budget Policy and Compliance
![](https://grda.com/wp-content/uploads/2023/09/john-rupe.jpg)
John Rupe
Tulsa, Commercial development, construction
Appointed by the Governor of Oklahoma
Term: 9/1/23 – 8/29/28
Committees: Audit, Finance, Budget, Policy, and Compliance; Compensation & Marketing
![](https://grda.com/wp-content/uploads/2023/11/TomKimball.jpg)
Tom Kimball
Owasso, Economic Development, Retail, Banking
Appointed by Oklahoma Speaker of the House
Term: 10/11/23 – 8/31/26
Committees: Assets, Marketing, and Compensation
GRDA is governed by a seven-member board of directors comprised of representatives from each GRDA customer class – municipals, electric cooperatives and industrials – as well as the GRDA lakes area. Senate confirmation is not required.
Two at-large representatives also sit on the board. Board members serve staggered, five-year terms, with one position opening each year, to ensure continuity.
GRDA is a policy driven organization. Directors utilize an active committee structure to make the most effective decisions and set the appropriate tone from the top.
Executive Management
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Dan Sullivan
President/Chief Executive Officer
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Tim Brown
Chief Operating Officer
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-8.png)
Brian Edwards
Executive Vice President/Chief of Law Enforcement & Lake Operations
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-9.png)
Heath Lofton
General Counsel
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-10.png)
Nathan Reese
Executive Vice President/External Relations
![](https://grda.com/wp-content/uploads/2023/12/NEWErikFeigner.jpg)
Erik Feighner
Chief Financial Officer
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-12.png)
Laura D. Hunter
Executive Vice President/
Chief Administrative Officer
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-13.png)
John Wiscaver
Executive Vice President/
Strategic Communications
![](https://grda.com/wp-content/uploads/2023/11/SheilaAllen.jpg)
Sheila Allen
Executive Assistant to the Chief Executive Officer
Corporate Secretary
Senior Management
![](https://grda.com/wp-content/uploads/2024/03/TonyDionisio.jpg)
Tony Dionisio
Chief Information Officer
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-3-1.png)
Steve Jacoby
Vice President Generation Engineering/Support
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-1-1.png)
Robert Ladd
Vice President Generation Operations
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-2-1.png)
Darrell Townsend, PhD
Vice President Ecosystems & Watershed Management
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-5-1.png)
Jeff Tullis
Vice President T&D Engineering & Operations
![](https://grda.com/wp-content/uploads/2023/06/Image-Placeholder-6-1.png)
Stace Kegley
Manager of Compliance
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Jeff Brown
Director of Financial Compliance