Our Team

Resilient Climate Solutions

We deliver on program goals and provide customer-centric support to accelerate commercial building decarbonization across the region.

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Abby Lessels (She/her)

Communications Lead

Adam Crook

Commercial Energy Consultant I

Alex Briggs

Commercial Energy Consultant I

Amy Rainwater

Customer Relationship Representative I

Andrea Villamaino (She/her)

Program Consultant II

Anthony Rubino

Project Coordinator II

Ashley Muspratt (She/her)

President & CEO

Azra Siddiqui (She/her)

Junior Salesforce Administrator

Ben Coe

Residential Energy Consultant II

Brian Pytko (He/him)

Residential Energy Consultant I

CJ Hanley (He/him)

Residential Energy Consultant II

Cameron Lowe

Residential Energy Consultant I

Camille Milton (She/her)

Program Consultant I

Caroline Coppola

Project Manager I

Cassie Rogers (She/her)

Communication Coordinator I

Chad Simmons (He/him)

Residential Energy Consultant II

Charlottie Eoppolo

Administrative Assistant

Craig Powers

Residential Energy Consultant II

Darcy Ratti (She/her)

Department Manager, Customer Relationship

Darlene Rohlman

Invoicing & Billing Specialist

Derek Cotroneo

Residential Energy Consultant I

Edgar Encarnacion Lebron

Program Manager

Edison Dika

Senior Energy Consultant

Edward DuRant

Residential Energy Consultant I

Edward Gagnon III

Residential Energy Consultant II

Elizabeth Terry

Project Manager II

Emily Fabel (She/her)

IT Business Systems Partner

Emily Gaylord (She/her)

Director of Communications & Relationship Development

Emma Sabella (She/her)

Waste Reduction Consultant II

Freya Bromwich

Waste Reduction Consultant II

Gabriella Vadehra (She/her)

Talent and Culture Partner

Haley Twigg

Customer Relationship Representative I

Heather Billings

Senior Waste Reduction Consultant

Ilsa McIntyre

Department Manager, Technical Services

James Lewis (He/him)

Department Manager, Technical Services

Jeff Horton

Program Consultant I

Jena Finnegan

Department Manager, Technical Services

Jill Wells

Business Development Manager

John Puc

Program Manager

Josh Enderle

Waste Reduction Consultant I

Julia Riseman

Manager of Philanthropic Investments and Proposals

Kacie Dean

Department Manager, Program Delivery

Kaitlyn Mitchell (She/her)

Commercial Energy Consultant I

Karina Gaft-Azcue (She/her)

Energy Portfolio Strategist

Katie Perl

Technical Services Supervisor

Kirsten Wille

Project Manager I

Kristin Gagnon

Supervisor, Program Delivery

Larry Brand

Chief Operating Officer

Lauren Holway (She/her)

Salesforce Administrator

Lauren Potter (She/her)

Project Coordinator II

Laurie Flaherty (She/her)

Director of People & Culture

Lelaina Beyer

Project Coordinator

Lilly Hoch

Assistant Director of PMO

Lisa Kohler (She/her)

Director of Technical Services & Program Delivery

Lorenzo Macaluso

Chief Growth Officer

Malik Malik

Customer Relationship Representative

Mariah Brewer

Project Coordinator

Marifer Rodriguez (She/her)

Program Consultant II

Marissa Major

Program Consultant II

Mark O'Hearne

Energy Engineer

Mark Whalen (He/him)

Business Applications Manager

Marrina Gallant (She/her)

Project Manager II

Mary Lydum-Long (She/her)

Program Consultant I

Max Morrisey Tarburton

Residential Energy Consultant I

Mayra Muniz

Lead Commercial Energy Consultant

Megan Denardo (She/her)

Program Consultant II

Michael Suter

Residential Energy Consultant II

Mike Goldenberg

Senior Commercial Energy Consultant

Mike Jekot

Program Consultant I

Nancy Cazalis

Communication Coordinator II

Nicholas Smith

Bids and Proposals Specialist

Nick DiVito

Waste Reduction Consultant I

Nicole Sommerdorf

Program Consultant I

Paul Jimenez

Residential Energy Consultant II

Paul Laviolette III

Energy Engineer

Rebecca Dube

Program Consultant II

Reggie Eleazer

Director of PMO

Renee Panetta (She/her)

Waste Reduction Consultant II

Robin Hansen

Program Consultant I

Rusty Daniels

Customer Relationship Representative II

Sam Freeman

Residential Energy Consultant I

Sam Stroman

Residential Energy Consultant I

Samantha Salvatore (She/her)

Waste Reduction Consultant I

Sara Draper

Project Manager II

Sarah Chase

Accounting Manager

Sharon Hoessler

Customer Relationship Representative I

Simon Siher Bentolila

Project Manager II

Sonja Williams

Program Consultant II

Steven Bandarra

Project Manager II

Talia Loiter

Program Consultant I

Terrie Szymanski (She/her)

Program Consultant II

Thomas Mekonnen

Energy Engineer

Tony DiLella

Residential Energy Consultant I

Tony Omodt-Lopez

Communication Coordinator I

Vanessa Estevam

Customer Relationship Representative I

Victoria Phillips (She/her)

Project Manager II

Board of Directors

With a collective vision for a greener, healthier planet, our board members bring diverse expertise and unwavering passion to guide CET towards achieving its mission. Join their journey to foster positive change and preserve the Earth for generations to come.

Janet Warren

Chair

Nancy Nylen

Vice Chair

Nathaniel Tassinari

Treasurer

Jennifer Marrapese

Clerk

Bhargavi Chevva

Board Member

Rosheen Kavanagh

Board Member

Heather Merhi-Matthews

Board Member

Ashley Muspratt

Board Member

Carl Cherebin

Board Member

Diana Vasquez

Board Member

David Werbel

Board Member

Virginia LeClair

Board Member

Krista St. George

Board Member

Janet Warren, Chair

…is a retired professional whose three decades of experience in marketing, sales, and product development include being Director of Marketing at Fazzi Associates, Vice President of Marketing at Monson Savings Bank, President of her own consulting firm, MarCom Capital, and Second Vice President for Market Development at Phoenix Home Life. In addition to her role on CET’s Board, her community engagement activities have included serving on the most recent strategic planning committee for the Greater Northampton Chamber of Commerce and as a board member for the Chamber, the Hampshire County Regional Chamber, the Hampshire County Regional Tourism Council, and the United Way of Hampshire County.

Nancy Nylen, Vice Chair

…is an independent consultant and environmental educator, specializing in the fields of energy efficiency, renewable energy, and resource conservation. She recently retired from CET, where she worked for more than three decades on innovative programs focusing on local solutions to energy issues that benefit the economy, natural environment, and quality of life for community members. She began her career at the Alaska Division of Energy and Power Development in the late 1970’s and went on to work for state and regional non-profit organizations in Washington State, New Mexico, and Massachusetts. Nancy received a B.A. from Hampshire College and a Masters of Education with a concentration in science education from the University of Washington. Nancy serves on the Board of Directors of Energy Federation, Inc. and is a Board member emerita of the Williamstown Rural Lands Foundation.

Nathaniel Tassinari, Treasurer

…is Regional Vice President for Western Massachusetts at TD Bank where he leads Commercial and Small Business Banking Teams. Nate has been with TD Bank for more than 15 years where he started after a varied career which included work in retail, hospitality, human services, technology, and publishing. Nate owns and manages Million Little Sunbeams, a solar development company which installed the first Agrivoltaic Solar Array approved under the SMART Solar program in Massachusetts. Nate is a graduate of Starting-Bloc Social Entrepreneurship, earned his undergraduate degree in Economics and East European Studies from Rutgers University, and received his Master’s Degree in European Studies from Jagiellonian University in Krakow, Poland. Nate and his wife Ania have two boys and split their time between Boston and Western MA.

Jennifer Marrapese, Clerk

…is a community member and formerly Senior Director of NEEP. In this role, Jennifer oversees and implements the organization’s strategic programs. She serves as NEEP’s leader for program and project planning and management, product/solutions development, and will support stakeholder engagement and fundraising. Before joining NEEP, Jennifer served as Chief of People, Culture, and Communication at Petersen Engineering, where she positioned the firm for rapid growth while maintaining and enhancing organizational culture and diversity. Prior to that, Jennifer served as Director of Search Services for United Personnel where she recruited and placed nonprofit executives and advised clients on their diversity and inclusion practices. For nearly 10 years, Jennifer served as Executive Director of Northeast Sustainable Energy Association (NESEA), where her efforts helped increase membership by 300% and staff retention by 50%, while growing sponsorships and diversify revenues significantly. Jennifer graduated from the University of Wisconsin, Madison with a bachelor’s degree in journalism and received a master’s degree in organizational development and management from Fielding University (California). She holds a Juris Doctor from University of California.

Bhargavi Chevva

…is Senior Vice President of Business Development and Strategy at ReMo Energy, a developer of distributed scale green ammonia plants to make competitively priced fertilizers. Prior to ReMo, Bhargavi was a Partner at Breakthrough Energy Ventures, a $2B climate tech venture firm. She worked in operations and finance roles at Roche and ExxonMobil, with experience in petroleum refining operations, engineering design, strategic financial and operational planning. Bhargavi holds an MBA from Harvard Business School and a B.S. in Chemical-Biological Engineering from MIT.

Rosheen Kavanagh

Rosheen has over 20 years of experience in creating, directing, and managing fundraising and philanthropic strategies. She is currently the Director of the Milton Fund at Milton Academy where she oversees both the fundraising and stewardship of the school’s annual fund as well as the annual Giving Day campaign. Rosheen was previously at MIT for over 17 years holding several leadership positions building, launching, and modernizing integrated marketing and volunteer donor solicitation programs in partnership with major gift officers, including Reunion Gift, Young Alumni (MIT10), and CASE award winning programs for alumni 11-24 years post graduation and student philanthropy campaigns.

Heather Merhi-Matthews

…started her career in the energy field in 2013 as a CET Energy Efficiency EcoFellow. Most recently, she is a Project Manager at Icetec Energy Services, a technology solutions provider which dispatches more than 200 MW of distributed generation in Northeast and Mid-Atlantic energy markets. She also continues in her role as Director of Operations at Next Grid Markets, a leading MA-based alternative and renewable energy certificate aggregator, which she has been involved in since the company’s formation in 2017. In her prior role at an environmental engineering consulting company, she worked with municipal and institutional clients on energy and billing analysis, energy master planning and climate resiliency.

Heather is active in her local community, serving as Energy Subcommittee Chair on her town’s Sustainability Commission. Throughout all her roles she is driven by an interest in sustainability and exploring the ways in which companies and institutions can reduce their climate change impact. She received a Bachelor of Science in Biology, with an Ecology concentration, from UMass Lowell in 2013.

Ashley Muspratt

As CET’s President, Ashley also serves on the Board of Directors. Since joining CET in 2018, Ashley has spearheaded novel building decarbonization services, wasted food solutions, and financing opportunities for customers and partners. She has broad experience with the organization’s nation-leading wasted food programming, building sector decarbonization, and deconstruction. Ashley assumed the role of president in 2022, and as CET’s leader is deeply engaged in strategic planning, implementing diversity, equity, and inclusion initiatives, and expanding the breadth and efficacy of programs through operations, communications, and fundraising.

Ashley has a long track-record as a leader and innovator. Prior to joining CET, she founded and lead a waste-to-energy startup in sub-Saharan Africa, which converted human fecal sludge into industrial fuel. The company’s investors included the Gates Foundation, USAID, and the French Development Agency and was widely recognized for reinventing the economics of urban sanitation in low-income countries.

Ashley has an MS in Environmental Engineering and PhD in Energy and Resources from the University of California, Berkeley.

Carl Cherebin

…Brings to the table over four decades of experience in advertising, magazine publishing, and media, having worked at prestigious organizations such as Scientific American, Nature Publishing Group (MacMillan), and Springer/Nature. Throughout his career, he navigated the intricate intersections of operations, production, advertising, sales, and account management, honing his expertise in account management, customer relations, team building, and fostering individual growth.

With a commitment to being part of the solution and uplifting others whenever possible, Carl has always sought to contribute to endeavors larger than himself.

Diana Vasquez

Diana is a CET EcoFellow alumni. Since CET, Diana has earned her Master’s of Public Health in Environmental Health and has worked at Union of Concerned Scientists and the Massachusetts Coalition for Safety and Health (MassCOSH). Currently, Diana is Review Board Manager for the City of Boston’s Building Emissions Reduction and Disclosure Ordinance (BERDO). Part of the City’s Carbon Neutrality team, she works directly with the BERDO Review Board in its mission to equitably implement the BERDO ordinance which aims to ensure that Boston’s large buildings achieve net-zero emissions by 2050.

David Werbel

David is a Partner with TFC Law Group PLLC and has practiced corporate, mergers & acquisitions (M&A), international transactions, compliance, and securities law for over 20 years. In addition to his professional experience, David has practical experience with the circular economy. He and his wife own a large commercial building which they renovated and were able to donate or reuse about 80% of the building materials.

Virginia LeClair

Virginia is a seasoned environmental professional with over 23 years of experience in sustainability, having worked with consulting firms, non-profit organizations, and local governments. Throughout her career, she has served as an Environmental Educator, Sustainability Coordinator, and Consultant, dedicating her efforts to advancing the journey towards net zero in various Massachusetts communities.
She has held positions such as Environmental Educator at The Boston Harbor Association, Conservation Assistant at the Town of Brookline, and Environmental Coordinator at the Town of Dedham for 12.5 years. More recently, she has served as a Sustainability Coordinator Consultant for the Towns of Hingham and Cohasset. Virginia played a pivotal role in leading Dedham’s climate action planning process and in crafting Hingham’s Climate Action Plan.
Her expertise spans across waste reduction and recycling, stormwater management, carbon emission calculations, energy efficiency, transportation planning, and land and resource management. Additionally, she possesses extensive experience in grant writing and securing funding for sustainability initiatives.
Virginia holds a B.A. in Environmental Studies and Public Policy from Hobart and William Smith College. She has actively contributed to the Town of Hingham’s Energy Action Committee and is presently involved in various local sustainability endeavors in her hometown of Cohasset, MA.
Outside of her professional endeavors, Virginia enjoys spending time with her husband, Eric, their two daughters, and their beloved family dog, Conway.

Krista St. George

Krista St George is an independent consultant, specializing in business transformation and commercial process excellence with for-profit and non-profit organization. She is a passionate advocate for sustainable operating practices and product circularity. Her professional experience includes more than 20 years of executive leadership with GE serving in a range of commercial and operating roles across multiple business units including Financial Service, Venture Investing, Energy and Corporate Sustainability.

Krista earned BS and MS degrees in Chemical Engineering from Case Western Reserve University and an MBA from the Kellogg School of Management at Northwestern University. She currently serves as a board member with Vanderheyden Hall, Inc. and a board member emerita with the American Red Cross of Northeastern NY.

Our Team

Resilient Climate Solutions

Board of Directors

Janet Warren

Nancy Nylen

Nathaniel Tassinari

Jennifer Marrapese

Bhargavi Chevva

Rosheen Kavanagh

Heather Merhi-Matthews

Ashley Muspratt

Carl Cherebin

Diana Vasquez

David Werbel

Virginia LeClair

Krista St. George

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