Arizona Public Service Executive and Leadership Team

November, 2026

Leadership Overview

Arizona Public Service has 5 executives leading key functions including operations, financial management, revenue generation, and corporate leadership.

Committed to delivering reliable power across the region, Arizona Public Service prioritizes sustainable energy solutions and grid modernization to support the growing needs of 1.4 million customers throughout Arizona.

Leadership Roles at Arizona Public Service

  • Chief Financial Officer - Joao Dafonsalfredo
  • Chief Operating Officer - Jacob Tetlow
  • President - Ted Geisler
  • President - Stephen Radnich
  • Chief Revenue Officer, Journey Mechanic - Michael Lee
  • Joao Dafonsalfredo - Chief Financial Officer

    Joao Dafonsalfredo, the Chief Financial Officer at Arizona Public Service, manages the financial health and capital allocation strategies for the utility. Overseeing fiscal planning, the Chief Financial Officer directs long-term investments in grid infrastructure and renewable energy projects. Dafonsalfredo monitors regulatory compliance and financial reporting to ensure transparency for stakeholders and investors. By analyzing market trends and energy pricing, the Chief Financial Officer optimizes the company's capital structure to support sustainable growth. Joao Dafonsalfredo collaborates with executive leadership to align financial resources with the strategic mission of providing affordable power to Arizona residents. This role involves managing risk, overseeing treasury functions, and ensuring the financial viability of large-scale energy initiatives. Through disciplined fiscal management, Dafonsalfredo maintains the economic stability required to fund ongoing technological advancements and infrastructure upgrades, ultimately securing the long-term financial future of the organization.

    Jacob Tetlow - Chief Operating Officer

    Jacob Tetlow, the Chief Operating Officer at Arizona Public Service, directs all daily utility operations, including power generation, transmission, and distribution infrastructure. Overseeing the maintenance of the electrical grid, the Chief Operating Officer ensures consistent energy delivery to 1.4 million customers. Tetlow manages complex engineering projects and safety protocols to maintain system reliability across the Arizona service territory. By optimizing generation assets and grid performance, the Chief Operating Officer drives operational efficiency and supports the transition toward cleaner energy sources. Jacob Tetlow coordinates with technical teams to integrate renewable resources into the existing infrastructure, ensuring that the utility meets evolving regulatory standards. Through rigorous oversight of field operations and maintenance schedules, Tetlow secures the stability of the power supply, directly impacting the company's ability to provide affordable and safe electricity to homes and businesses throughout the state.
    Jacob Tetlow

    Ted Geisler - President

    Ted Geisler, the President at Arizona Public Service, provides executive leadership for the company's overarching strategic vision and corporate governance. Overseeing the execution of long-term business objectives, the President directs the alignment of organizational goals with the mission of providing safe and reliable energy. Geisler manages high-level stakeholder relationships and ensures that the utility meets the evolving needs of the Arizona population. By fostering a culture of innovation and operational excellence, the President drives the company's commitment to clean energy and grid modernization. Ted Geisler collaborates with the Board and other C-suite leaders to navigate complex regulatory environments and market challenges. This leadership role involves setting the tone for corporate responsibility and community engagement. Through decisive management and strategic foresight, Geisler ensures that the organization remains a leader in the energy sector, consistently delivering value to customers and shareholders while maintaining a focus on sustainable growth.
    Ted Geisler

    Stephen Radnich - President

    Stephen Radnich, the President at Arizona Public Service, focuses on the strategic development of internal organizational capabilities and workforce excellence. Overseeing human capital and corporate culture, the President directs initiatives that enhance employee productivity and safety standards across all utility departments. Radnich manages the integration of new technologies into the workforce, ensuring that teams possess the skills necessary to maintain a modern, reliable grid. By championing professional development and operational agility, the President supports the company's ability to respond to changing energy demands. Stephen Radnich works closely with other executives to ensure that internal processes support the broader mission of delivering affordable and clean power. This leadership role involves driving organizational change and fostering an environment of continuous improvement. Through the cultivation of a high-performing workforce, Radnich ensures that the utility maintains the technical expertise required to serve the diverse needs of Arizona homes and businesses effectively.

    Michael Lee - Chief Revenue Officer, Journey Mechanic

    Michael Lee, the Chief Revenue Officer, Journey Mechanic at Arizona Public Service, drives revenue growth through the development of customer-centric energy programs and service offerings. Overseeing market expansion, the Chief Revenue Officer, Journey Mechanic designs strategies to enhance the customer experience while managing billing systems and service delivery models. Lee focuses on identifying new opportunities for energy efficiency programs that provide value to residential and commercial clients. By analyzing consumption patterns, the Chief Revenue Officer, Journey Mechanic optimizes revenue streams and ensures alignment with the company's commitment to affordable energy. Michael Lee coordinates with cross-functional teams to streamline service interactions and improve overall customer satisfaction across the Arizona market. This leadership role involves implementing innovative solutions that simplify the energy journey for consumers. Through strategic pricing and service optimization, Lee directly impacts the company's financial performance and strengthens the relationship between the utility and the communities served.

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    Frequently Asked Questions Regarding Arizona Public Service Top Executives and Leadership Team

    Who leads Arizona Public Service?
    Arizona Public Service is led by Joao Dafonsalfredo (Chief Financial Officer), along with executives such as Jacob Tetlow (Chief Operating Officer) and Ted Geisler (President).
    Who is part of Arizona Public Service’s executive team?
    The executive team of Arizona Public Service includes leaders such as Joao Dafonsalfredo (Chief Financial Officer), Jacob Tetlow (Chief Operating Officer), Ted Geisler (President) and other senior executives.
    How many executives does Arizona Public Service have?
    Arizona Public Service has 5 executives leading key business areas.
    What roles are included in Arizona Public Service’s leadership team?
    The leadership team of Arizona Public Service includes roles such as Chief Financial Officer, Chief Operating Officer, President, President, Chief Revenue Officer, Journey Mechanic.