IMPACT FESTIVAL 2025 is Europe’s largest business-to-business event dedicated to sustainable innovation, held in Frankfurt am Main, Germany, on September 17–18, 2025. The festival gathers over 4,000 visitors, 150 speakers, and partners from more than 130 investment organizations, creating a dynamic ecosystem for accelerating sustainable transformation in the economy. It connects Impact and GreenTech startups, corporates, and investors, facilitating networking, masterclasses, workshops, and curated formats devoted to driving real progress in sustainability. Attendees will discover over 200 solutions showcased across five stages in a 7,500 m² exhibition area, with additional opportunities through the Impact Challenge, where startups collaborate with corporate partners to address critical sustainability topics such as ESG integration and net-zero goals. The festival is renowned for fostering partnerships, scaling transformative technologies, and advancing operational sustainability for organizations of all sizes.