Clean Energy Group Staff

Our staff are available for media interviews and panel participation on topics related to clean energy finance, technology and policy. Contact information and staff bios are available below. For general inquiries, please contact

Lewis Milford
President of Clean Energy Group, Founder of Clean Energy States Alliance

Maria Blais Costello
Manager of Program Administration

Samantha Donalds
Communications Coordinator

Nate Hausman
Project Director

Warren Leon
Executive Director – Clean Energy States Alliance

Meghan Monahan
Executive Assistant & Office Manager

Seth Mullendore
Vice President, Project Director

Todd Olinsky-Paul
Senior Project Director

Janice Ouellette
Bookkeeper and Human Resources Assistant

Marriele Mango
Project Director

Abbe Ramanan
Project Manager

Robert Sanders
Senior Finance Director

Val Stori
Project Director

Anthony Vargo
Chief Financial Officer