Green Mountain Power Executive and Leadership Team

June, 2026

Leadership Overview

Green Mountain Power has 5 executives leading key functions including strategy, finance, and human resources.

Driven by a commitment to innovation, Green Mountain Power delivers essential electrical services to residential and business customers, shaping the future of energy with a focus on sustainability and customer empowerment.

Leadership Roles at Green Mountain Power

  • Chief Executive Officer - Thomas Altman
  • President & Chief Executive Officer - Mari McClure
  • Chief Financial Officer - Dawn Bugbee
  • Vice President, Chief Financial Officer & Treasurer - Mathieu Lepage
  • Vice President, Chief People Officer - Julie Murray
  • Thomas Altman - Chief Executive Officer

    Thomas Altman, the Chief Executive Officer at Green Mountain Power, directs the company's overarching strategy and operational execution. Altman guides the organization's long-term vision, ensuring alignment with market demands and regulatory landscapes within the energy sector. This leadership involves fostering innovation in electrical services and driving sustainable practices across all business units. Altman's focus remains on enhancing customer value and solidifying Green Mountain Power's position as a leading provider. The Chief Executive Officer oversees critical strategic initiatives that impact revenue generation and operational efficiency. Altman's role is pivotal in navigating the complexities of the energy market, ensuring the company's continued growth and adaptation to evolving industry standards. This executive champions initiatives that promote environmental responsibility and customer satisfaction, directly influencing the company's public image and market competitiveness.

    Mari McClure - President & Chief Executive Officer

    Mari McClure, the President & Chief Executive Officer at Green Mountain Power, spearheads the company's strategic direction and executive leadership. McClure drives the vision for delivering innovative electrical services to both residential and business customers, emphasizing sustainable energy solutions. This role involves overseeing all major operational facets, ensuring the company's commitment to environmental stewardship and customer satisfaction is consistently met. McClure's leadership focuses on expanding market reach and enhancing service delivery through technological advancements. The President & Chief Executive Officer works closely with the board and executive team to set ambitious goals for growth and operational excellence. Mari McClure is instrumental in navigating the dynamic energy sector, championing initiatives that promote efficiency and reliability for all stakeholders. This executive's purview includes fostering a culture of continuous improvement and adapting to the evolving needs of the energy market.
    Mari McClure

    Dawn Bugbee - Chief Financial Officer

    Dawn Bugbee, the Chief Financial Officer at Green Mountain Power, manages the company's financial health and strategic fiscal planning. Bugbee oversees all financial operations, including budgeting, forecasting, and financial reporting, ensuring compliance with industry regulations. This leadership position is critical for maintaining the company's financial stability and supporting its growth objectives in the electrical services sector. The Chief Financial Officer plays a key part in investment decisions and resource allocation, directly impacting operational efficiency and profitability. Bugbee's responsibilities extend to managing risk and optimizing financial performance across all departments. Dawn Bugbee ensures that financial strategies align with the company's mission of providing reliable and sustainable energy solutions. This executive's expertise is vital for securing funding, managing capital expenditures, and driving shareholder value.

    Mathieu Lepage - Vice President, Chief Financial Officer & Treasurer

    Mathieu Lepage, the Vice President, Chief Financial Officer & Treasurer at Green Mountain Power, directs comprehensive financial management and treasury operations. Lepage oversees the company's fiscal strategy, ensuring robust financial controls and compliance with all relevant regulations in the energy sector. This role is essential for managing cash flow, optimizing capital structure, and supporting strategic investments that drive business expansion. The Vice President, Chief Financial Officer & Treasurer works to enhance financial reporting accuracy and transparency for stakeholders. Mathieu Lepage's leadership ensures the financial integrity of the organization, supporting its mission to deliver dependable electrical services. This executive is responsible for managing banking relationships, debt financing, and investment portfolios to maximize financial returns and mitigate risk.

    Julie Murray - Vice President, Chief People Officer

    Julie Murray, the Vice President, Chief People Officer at Green Mountain Power, leads all human capital strategies and organizational development initiatives. Murray is responsible for cultivating a positive and productive work environment, overseeing talent acquisition, employee relations, and compensation and benefits programs. This executive role is crucial for aligning the workforce with the company's strategic goals in the energy services industry. The Vice President, Chief People Officer champions initiatives that foster employee engagement, professional growth, and diversity and inclusion across the organization. Julie Murray ensures that Green Mountain Power attracts and retains top talent, supporting the company's commitment to innovation and customer service. This leadership position is vital for building a strong organizational culture that supports the company's mission and operational objectives.
    Julie Murray

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    Frequently Asked Questions Regarding Green Mountain Power Top Executives and Leadership Team

    Who leads Green Mountain Power?
    Green Mountain Power is led by Thomas Altman (Chief Executive Officer), along with executives such as Mari McClure (President & Chief Executive Officer) and Dawn Bugbee (Chief Financial Officer).
    Who is part of Green Mountain Power’s executive team?
    The executive team of Green Mountain Power includes leaders such as Thomas Altman (Chief Executive Officer), Mari McClure (President & Chief Executive Officer), Dawn Bugbee (Chief Financial Officer) and other senior executives.
    How many executives does Green Mountain Power have?
    Green Mountain Power has 5 executives leading key business areas.
    What roles are included in Green Mountain Power’s leadership team?
    The leadership team of Green Mountain Power includes roles such as Chief Executive Officer, President & Chief Executive Officer, Chief Financial Officer, Vice President, Chief Financial Officer & Treasurer, Vice President, Chief People Officer.