Hannon Armstrong Sustainable

HASI offers careers in clean energy investing and comprehensive benefits.

Amanuel “Manny” Haile-Mariam is Senior Managing Director and Co-Chief Investment Officer of HASI. He is responsible for co-managing the company’s investment activity.

Annmarie Reynolds is Senior Managing Director and Co-Chief Investment Officer of HASI. She is responsible for co-managing the company’s investment activity.

Barry E. Welch has been an independent director since April 15, 2025, and an Onward Energy director since January 2023. Welch became board chair in January 2024.

HASI's Board of Directors brings together a distinguished group of leaders with deep experience in finance, energy, utilities, infrastructure, and public service.

HASI's interactive timeline covers four decades of clean energy finance.

For financing partnership inquiries, media interviews, executive speaking requests, investor questions, careers and internship questions, legal information, or other general inquiries, contact the appropriate HASI team using the information on this page.

HASI invests in sustainable infrastructure assets advancing the energy transition. Its more than $17 billion in managed assets span utility-scale and distributed solar and storage, onshore wind, RNG, and energy efficiency.

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