Leadership Overview
Arizona Public Service has 5 executives leading key functions including financial strategy, operational management, revenue optimization, 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.
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
Joao Dafonsalfredo - Chief Financial Officer
Joao Dafonsalfredo, the Chief Financial Officer at Arizona Public Service, directs all fiscal planning and capital allocation strategies. Overseeing the financial health of the utility, the Chief Financial Officer ensures the company maintains the necessary liquidity to fund large-scale grid infrastructure projects and renewable energy investments. This leadership role involves managing investor relations and regulatory financial compliance to support long-term rate stability for customers. By optimizing the balance sheet, Joao Dafonsalfredo directly impacts the ability of the organization to execute clean energy transitions across the state. Dafonsalfredo monitors market trends to mitigate economic risks while securing the capital required for operational expansion. Through rigorous oversight of corporate budgets and financial reporting, the Chief Financial Officer maintains the fiscal discipline essential for providing affordable electricity to homes and businesses throughout the Arizona service territory.
Jacob Tetlow - Chief Operating Officer
Jacob Tetlow, the Chief Operating Officer at Arizona Public Service, manages the generation, transmission, and distribution of electricity across the entire service area. Overseeing the daily reliability of the power grid, the Chief Operating Officer ensures that energy delivery remains safe and consistent for 1.4 million customers. This leadership role involves coordinating maintenance schedules for power plants and distribution networks to prevent outages and improve system resilience. By implementing advanced grid technologies, Jacob Tetlow directly impacts the efficiency of energy distribution throughout the region. Tetlow drives operational excellence by streamlining field services and emergency response protocols. Through the management of complex utility assets, the Chief Operating Officer supports the company mission of providing reliable power while integrating renewable resources into the existing infrastructure to meet evolving energy demands across the diverse Arizona landscape.
Ted Geisler - President
Ted Geisler, the President at Arizona Public Service, leads the overarching corporate strategy and organizational vision. Overseeing the executive team, the President ensures that all departments remain focused on the core mission of providing safe, reliable, and clean energy. This leadership role involves engaging with regulatory bodies, community stakeholders, and industry partners to shape the future of the regional energy landscape. By fostering a culture of innovation and safety, Ted Geisler directly impacts the long-term growth and reputation of the utility. Geisler directs the implementation of sustainability goals and grid infrastructure improvements that define the company market position. Through the coordination of high-level business objectives, the President maintains the strategic alignment required to serve 1.4 million customers effectively while navigating the complex regulatory environment inherent in the energy sector across the state of Arizona.

Stephen Radnich - President
Stephen Radnich, the President at Arizona Public Service, manages external affairs and strategic partnerships to advance the company energy policy. Overseeing the development of long-term energy procurement strategies, the President ensures that the utility secures diverse and sustainable power sources for the future. This leadership role involves collaborating with government agencies and environmental groups to align corporate operations with state-wide clean energy mandates. By championing renewable energy initiatives, Stephen Radnich directly impacts the transition toward a more sustainable power grid. Radnich drives the expansion of energy solutions that enhance reliability for both urban and rural communities. Through the management of high-level stakeholder relationships, the President supports the company commitment to affordability and environmental stewardship, ensuring that the organization remains a leader in the energy sector while meeting the evolving needs of the Arizona population.
Michael Lee - Chief Revenue Officer, Journey Mechanic
Michael Lee, the Chief Revenue Officer, Journey Mechanic at Arizona Public Service, architects revenue growth strategies and customer experience initiatives. Overseeing the alignment of service delivery with market demand, the Chief Revenue Officer, Journey Mechanic ensures that billing systems and customer engagement platforms function seamlessly. This leadership role involves analyzing consumption patterns to optimize rate structures and service offerings for residential and commercial clients. By refining the customer journey, Michael Lee directly impacts the overall satisfaction and retention rates of the utility base. Lee drives revenue stability through the implementation of innovative energy solutions and demand-side management programs. Through the integration of data-driven insights into the revenue cycle, the Chief Revenue Officer, Journey Mechanic secures the financial foundation necessary for the company to continue investing in grid modernization and sustainable energy projects across the Arizona market.
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