Lizzy Reinholt joins Peaks after nearly a decade supporting the company as the SVP of Corporate Affairs, Sustainability, and Marketing at Summit Utilities, where we worked closely with Peaks and others to develop policies and corporate strategies to reduce emissions and establish new policy pathways to advance the development of renewable fuels. She is excited to join the Peaks team, where she can focus exclusively on building the team and helping companies, states, and the country advance their climate goals by decarbonizing the molecule and turning waste into energy. When she’s not at work, Lizzy enjoys hiking, skiing, and spending time with her husband and daughter in the woods of Maine. She also serves on several state and local nonprofit organizations focusing on economic development and community health and wellness in rural Maine.

Aidan Renaghan serves as Peaks Renewables’ Director of Renewable Project Development. His passion for sustainability can be traced back to his continual desire to conquer new challenges and find innovative solutions to ‘unsolvable’ problems. He believes that climate change is the great challenge of his generation, and that decarbonizing thermal energy is the key to achieving carbon reduction at a speed and scale necessary to meet this global challenge. Aidan had a varied career before joining the Peaks team, serving in the Peace Corps in Ukraine, working as a professional chef, and spending time in higher education and international development. Now, his career path is driven toward finding solutions in the renewable energy sector to create a cleaner and brighter future for him and his family.

Derek DeAndrade serves as Senior Director of Operations and Commercial Strategy for Peaks. He oversees operational performance across all RNG facilities, ensuring efficiency, safety, and compliance while implementing scalable processes. Derek leads commercial strategy efforts, focusing on expanding Peaks’ presence in RNG, hydrogen, and decarbonization markets. He also supports M&A activities, contributing to diligence, deal execution, and structuring partnerships to maximize value. A Massachusetts native, Derek holds a degree from Elon University and an MBA from MIT. Outside of work, he enjoys stand-up comedy, global travel, and cheering on Boston sports teams. Derek lives with his wife, Katie, their son Cameron, and their goldendoodle, Norman. He’s passionate about blending profit with purpose and lives by the motto: “Take your work seriously but don’t take yourself seriously.

Graham Christy works as the Senior Manager of Engineering for Peaks. Graham offers unparalleled experience in the renewables field by leading project process development, oversight of in-field installations, and industry and new technology evaluation. With an understanding that people will always need energy, Graham’s skills in determining the technical feasibility and evaluation of renewable natural gas (RNG) and hydrogen projects will aid in discovering more sustainable solutions for future generations. Graham is a loving husband and newly appointed dad, and enjoys cheering on the Colorado Boulder Buffs.

Kyle Dubuque is the Manager of M&A and Market Development at Peaks, where he focuses on originating, structuring, and executing investments in renewable natural gas infrastructure, including M&A, greenfield project development, and strategic partnerships. He also leads business development efforts in new market entry, exploring innovative waste-to-energy and low-carbon fuel technologies. With prior experience at Ernst and Young’s EY-Parthenon and private equity firms specializing in RNG development, Kyle brings deep expertise in transaction advisory, capital markets, and project finance. Originally from Grafton, MA, and a Northwestern University graduate, Kyle enjoys traveling, skiing, and cheering on Boston sports teams. Outside of work, he’s preparing for his wedding in May 2025 and is driven by a passion for collaborating with great partners to create impactful solutions that support job creation, methane abatement, and long-term environmental health.

Rob Quellmalz’s heart for sustainable development and construction practices is rooted in his work experiences managing the development of food-waste-fueled anaerobic digesters and advanced food-producing greenhouse projects across the country. He brings with him years of experience in development and the renewable fuels space. A beach-going California native, he now proudly calls the north shore of Massachusetts home. When he's not developing projects, Rob is a loving husband and dog/cat dad that enjoys ocean swimming, world history, and science-fiction novels.