Grand River Dam Authority Executive and Leadership Team

November, 2026

Leadership Overview

Grand River Dam Authority has 6 executives leading key functions including strategy, operations, finance, technology, human resources, and materials control.

Focused on delivering reliable power and managing vital water resources, Grand River Dam Authority drives economic development and environmental sustainability across Oklahoma through advanced hydroelectric generation and infrastructure management.

Leadership Roles at Grand River Dam Authority

  • President & Chief Executive Officer - Daniel Sullivan
  • Chief Financial Officer - Erik Feighner
  • Chief Operating Officer - Michael Kiefner
  • Chief Information Officer - Tony Dionisio
  • Superintendent Properties Administration Coordinator & Chief People Officer - Mary Edmundson
  • Chief People Officer, Materials Control - Robert Wheeler
  • Daniel Sullivan - President & Chief Executive Officer

    Daniel Sullivan, the President & Chief Executive Officer at Grand River Dam Authority, directs the overarching strategic vision for Oklahoma's largest public power electric utility. Sullivan manages the complex balance between hydroelectric generation, flood control, and the economic development needs of municipalities and industrial customers. By aligning organizational goals with the mission of providing reliable electricity, the President & Chief Executive Officer ensures long-term operational stability. This leadership role involves constant coordination with the Board to optimize infrastructure investments like the Pensacola Dam. Daniel Sullivan maintains a focus on regional growth, ensuring that the utility remains a cornerstone of the state's energy landscape. Through rigorous oversight of utility revenues and water management protocols, the President & Chief Executive Officer secures the financial and environmental health of the organization, ultimately positioning the utility as a leader in public power delivery.

    Erik Feighner - Chief Financial Officer

    Erik Feighner, the Chief Financial Officer at Grand River Dam Authority, manages the fiscal health and revenue streams derived from electric and water sales. Feighner directs the financial planning, budgeting, and capital allocation processes necessary to sustain large-scale infrastructure projects. The Chief Financial Officer monitors market trends to ensure competitive pricing for municipalities and industrial customers throughout Oklahoma. By analyzing revenue data, Erik Feighner supports the strategic expansion of power generation capabilities. This leadership role involves maintaining transparency with stakeholders and ensuring that financial resources align with the utility's long-term environmental and economic goals. Through rigorous fiscal oversight, the Chief Financial Officer mitigates economic risks and secures the capital required for ongoing maintenance of the Pensacola Dam and other critical assets. Feighner provides the financial foundation that allows the organization to deliver reliable, cost-effective energy solutions to the entire state.
    Erik Feighner

    Michael Kiefner - Chief Operating Officer

    Michael Kiefner, the Chief Operating Officer at Grand River Dam Authority, manages the daily technical execution of power generation and water resource maintenance. Kiefner oversees the vast infrastructure spanning over 70,000 surface acres, ensuring that hydroelectric facilities operate at peak efficiency for electric cooperatives and industrial clients. The Chief Operating Officer coordinates maintenance schedules for critical assets, mitigating risks associated with flood control and power distribution. By streamlining operational workflows, Michael Kiefner drives the reliability of the grid across the Oklahoma service territory. This role requires constant interaction with engineering teams to modernize legacy systems while maintaining strict environmental compliance. Through the implementation of robust safety protocols and performance metrics, the Chief Operating Officer optimizes the utility's physical footprint. Kiefner secures the operational integrity of the entire power network, supporting the broader mission of providing consistent energy to the region.
    Michael Kiefner

    Tony Dionisio - Chief Information Officer

    Tony Dionisio, the Chief Information Officer at Grand River Dam Authority, directs the digital transformation and cybersecurity initiatives essential for modernizing utility operations. Dionisio manages the integration of advanced monitoring systems that track hydroelectric output and water levels across the vast network of lakes. The Chief Information Officer ensures that data infrastructure remains resilient against threats, protecting the integrity of the power grid and internal communications. By implementing scalable technology solutions, Tony Dionisio supports the efficiency of administrative and operational departments. This role involves collaborating with other C-suite leaders to leverage data analytics for improved decision-making regarding energy distribution. Through the deployment of secure, high-performance networks, the Chief Information Officer enables real-time management of critical infrastructure. Dionisio drives the technological evolution of the utility, ensuring that digital capabilities keep pace with the growing energy demands of Oklahoma's diverse customer base.

    Mary Edmundson - Superintendent Properties Administration Coordinator & Chief People Officer

    Mary Edmundson, the Superintendent Properties Administration Coordinator & Chief People Officer at Grand River Dam Authority, manages the human capital and administrative oversight of the organization's extensive land and property assets. Edmundson directs talent acquisition, employee development, and organizational culture initiatives to ensure a high-performing workforce. The Superintendent Properties Administration Coordinator & Chief People Officer also oversees the administrative governance of the utility's vast surface water holdings and associated properties. By aligning personnel strategies with the operational needs of the power utility, Mary Edmundson fosters an environment of professional excellence. This role involves coordinating with department heads to optimize staffing levels and property management protocols. Through the implementation of comprehensive training and administrative policies, the Superintendent Properties Administration Coordinator & Chief People Officer supports the overall mission of environmental stewardship and reliable service. Edmundson secures the organizational structure necessary to maintain the utility's status as a premier public power provider.
    Mary Edmundson

    Robert Wheeler - Chief People Officer, Materials Control

    Robert Wheeler, the Chief People Officer, Materials Control at Grand River Dam Authority, directs the strategic management of human resources alongside the critical oversight of supply chain and materials logistics. Wheeler manages the procurement processes for essential equipment required to maintain hydroelectric infrastructure and power generation facilities. The Chief People Officer, Materials Control ensures that the workforce remains equipped with the necessary tools and resources to perform complex maintenance tasks safely and efficiently. By integrating personnel management with materials control, Robert Wheeler optimizes operational readiness across the utility's regional footprint. This role involves streamlining inventory systems to reduce downtime and improve the speed of emergency repairs. Through the alignment of labor capacity with material availability, the Chief People Officer, Materials Control supports the utility's commitment to providing reliable electricity. Wheeler drives the efficiency of internal support systems, ensuring that the organization remains prepared for any operational challenge.

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    Frequently Asked Questions Regarding Grand River Dam Authority Top Executives and Leadership Team

    Who leads Grand River Dam Authority?
    Grand River Dam Authority is led by Daniel Sullivan (President & Chief Executive Officer), along with executives such as Erik Feighner (Chief Financial Officer) and Michael Kiefner (Chief Operating Officer).
    Who is part of Grand River Dam Authority’s executive team?
    The executive team of Grand River Dam Authority includes leaders such as Daniel Sullivan (President & Chief Executive Officer), Erik Feighner (Chief Financial Officer), Michael Kiefner (Chief Operating Officer) and other senior executives.
    How many executives does Grand River Dam Authority have?
    Grand River Dam Authority has 6 executives leading key business areas.
    What roles are included in Grand River Dam Authority’s leadership team?
    The leadership team of Grand River Dam Authority includes roles such as President & Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Chief Information Officer, Superintendent Properties Administration Coordinator & Chief People Officer.