Calpine Executive and Leadership Team

June, 2026

Leadership Overview

Calpine has 8 executives leading key functions including operations, revenue, risk, information technology, finance, legal, and administration.

Driven by a commitment to reliable energy, Calpine specializes in natural gas and geothermal generation, powering communities across the United States with a diverse portfolio of power plants.

Leadership Roles at Calpine

  • Executive VP & Chief Financial Officer - Zamir Rauf
  • Chief Operating Officer - Haoran Wang
  • Chief Revenue Officer & Control Room Operator - Aaron Thompson
  • Chief Risk Officer & Chief Revenue Officer - Timothy Faraldi
  • Senior VP & Chief Information Officer - Kurt Seel
  • Senior Vice President and Chief Information Officer - Hari Chandrasekaran
  • Executive Vice Chairman & Chief Legal Officer - W. Miller
  • Chief Administrative Officer (CAO) - Rosemary Antonopoulos
  • Zamir Rauf - Executive VP & Chief Financial Officer

    Zamir Rauf, the Executive VP & Chief Financial Officer at Calpine, directs all financial operations and strategic financial planning for the company. This executive oversees treasury, accounting, financial reporting, and capital allocation, ensuring the fiscal health and stability of the organization. The Executive VP & Chief Financial Officer plays a pivotal role in securing financing, managing investor relations, and optimizing the company's capital structure to support growth initiatives and operational needs. By providing critical financial insights and guidance, Zamir Rauf enables informed decision-making across all business units. This leadership position is fundamental to Calpine's ability to execute its business strategy, manage financial risks, and deliver value to stakeholders through robust financial stewardship.
    Zamir Rauf

    Haoran Wang - Chief Operating Officer

    Haoran Wang, the Chief Operating Officer at Calpine, directs the operational execution across the company's extensive portfolio of natural gas and geothermal power generation facilities. Overseeing the day-to-day performance of these assets, the Chief Operating Officer ensures maximum efficiency and reliability in energy production. This leadership role involves managing complex operational logistics, optimizing plant performance, and maintaining stringent safety standards across all sites. By focusing on operational excellence, Haoran Wang drives the core business of generating power to meet market demand. The Chief Operating Officer's strategic oversight extends to implementing best practices in plant management and ensuring seamless integration of new technologies to enhance operational capabilities. This executive's focus is critical for maintaining Calpine's position as a leading independent power producer.

    Aaron Thompson - Chief Revenue Officer & Control Room Operator

    Aaron Thompson, the Chief Revenue Officer & Control Room Operator at Calpine, spearheads revenue generation strategies while maintaining direct oversight of critical control room operations. This dual role ensures that market-facing revenue objectives are intrinsically linked to the real-time operational capabilities of the power generation fleet. The Chief Revenue Officer & Control Room Operator analyzes market dynamics to identify new revenue streams and optimize existing ones, directly impacting the company's financial performance. Simultaneously, this executive ensures the safe and efficient dispatch of power from Calpine's facilities, a responsibility demanding constant vigilance and technical expertise. Aaron Thompson's leadership bridges the gap between market opportunities and operational realities, driving both commercial success and energy delivery.

    Timothy Faraldi - Chief Risk Officer & Chief Revenue Officer

    Timothy Faraldi, the Chief Risk Officer & Chief Revenue Officer at Calpine, manages the intricate balance between revenue maximization and comprehensive risk mitigation across the organization. This executive's purview encompasses developing and implementing strategies to safeguard Calpine's financial health against market volatility and operational hazards. The Chief Risk Officer & Chief Revenue Officer analyzes potential threats to revenue streams and operational stability, devising proactive measures to protect company assets and profitability. By integrating risk management principles into revenue generation initiatives, Timothy Faraldi ensures sustainable growth and resilience. This leadership position is vital for navigating the complexities of the energy market, securing Calpine's long-term viability and competitive edge through astute financial and risk oversight.

    Kurt Seel - Senior VP & Chief Information Officer

    Kurt Seel, the Senior VP & Chief Information Officer at Calpine, architects and directs the company's overarching information technology strategy and infrastructure. This executive is responsible for ensuring that Calpine's technological backbone supports its core business of energy generation and distribution efficiently and securely. The Senior VP & Chief Information Officer oversees the implementation of advanced IT solutions, data management systems, and cybersecurity protocols to protect sensitive information and operational integrity. By driving digital transformation initiatives, Kurt Seel enhances operational performance and fosters innovation across the organization. This leadership role is crucial for maintaining a competitive technological advantage in the dynamic energy sector, ensuring seamless data flow and robust system performance.

    Hari Chandrasekaran - Senior Vice President and Chief Information Officer

    Hari Chandrasekaran, the Senior Vice President and Chief Information Officer at Calpine, drives the strategic direction and execution of the company's information technology initiatives. This executive is instrumental in leveraging technology to enhance operational efficiency, support business growth, and maintain a secure digital environment. The Senior Vice President and Chief Information Officer oversees the development and deployment of IT infrastructure, software solutions, and data analytics capabilities that are critical for Calpine's energy generation operations. By focusing on innovation and system reliability, Hari Chandrasekaran ensures that technology effectively supports the company's mission. This leadership role is essential for maintaining Calpine's technological edge and operational resilience in the competitive energy market.
    W. Miller, the Executive Vice Chairman & Chief Legal Officer at Calpine, provides strategic leadership and oversees all legal affairs for the corporation. This executive's responsibilities encompass corporate governance, regulatory compliance, litigation management, and advising the board on critical legal matters. The Executive Vice Chairman & Chief Legal Officer ensures that Calpine operates within the bounds of all applicable laws and regulations, safeguarding the company's interests and reputation. By offering expert legal counsel, W. Miller supports the company's strategic objectives and mitigates legal risks associated with its extensive power generation operations. This leadership role is vital for maintaining ethical standards and ensuring the long-term legal integrity of the organization.
    W. Miller

    Rosemary Antonopoulos - Chief Administrative Officer (CAO)

    Rosemary Antonopoulos, the Chief Administrative Officer (CAO) at Calpine, directs and manages the company's administrative functions to ensure operational efficiency and support organizational goals. This executive oversees key support services, including human resources, facilities management, and corporate communications, fostering a productive work environment. The Chief Administrative Officer (CAO) implements policies and procedures that enhance organizational effectiveness and employee engagement across Calpine's diverse operations. By streamlining administrative processes and optimizing resource allocation, Rosemary Antonopoulos contributes significantly to the company's overall performance and strategic execution. This leadership role is critical for maintaining a well-functioning corporate infrastructure that supports Calpine's core energy generation business.

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    Frequently Asked Questions Regarding Calpine Top Executives and Leadership Team

    Who leads Calpine?
    Calpine is led by Zamir Rauf (Executive VP & Chief Financial Officer), along with executives such as Haoran Wang (Chief Operating Officer) and Aaron Thompson (Chief Revenue Officer & Control Room Operator).
    Who is part of Calpine’s executive team?
    The executive team of Calpine includes leaders such as Zamir Rauf (Executive VP & Chief Financial Officer), Haoran Wang (Chief Operating Officer), Aaron Thompson (Chief Revenue Officer & Control Room Operator) and other senior executives.
    How many executives does Calpine have?
    Calpine has 8 executives leading key business areas.
    What roles are included in Calpine’s leadership team?
    The leadership team of Calpine includes roles such as Executive VP & Chief Financial Officer, Chief Operating Officer, Chief Revenue Officer & Control Room Operator, Chief Risk Officer & Chief Revenue Officer, Senior VP & Chief Information Officer.