Stéphane Villecroze is the co-founder and Managing Partner of Demeter Partners. See sector focus and contact routes.
Stéphane Villecroze is the co-founder and Managing Partner of Demeter Partners, a Paris-based private equity firm focused on the ecological transition, and he serves as a non-executive board member for several of the firm’s portfolio companies. His investment thesis centers on venture capital and private equity in sectors driving environmental and energy transition, with a geographic focus on France and Europe, particularly through funds like the Paris Green Fund that support innovative SMEs in major cities. While specific check sizes and lead/follow behavior are not publicly detailed, Demeter operates as a development capital fund investing in SME capital, suggesting mid-to-later-stage growth investments. Notable portfolio companies under his board oversight include Ynsect, Sunna Design, Altawest, and IES Synergy, reflecting a focus on clean technology and sustainable infrastructure. Villecroze brings deep public-sector background from roles at Veolia Environment and the French Ministry of Ecology, Energy, and Sustainable Development, where he managed territorial services for roads, ports, and airports. He is a co-author of several authoritative guides o
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