This workshop unites 13 research and innovation projects, all working on innovative and sustainable cooling solutions for data centers and other industries. In this workshop the participating proejcts present their objectives and, most importantly, their challenges encountered, lessons learned, identifying key questions, potential solutions, and areas for improvement. The prupose of this workshop is to exchange knowledge within this research community and inspire the audience by presenting state of-the-art cooling solutions. During the discussion session it is expected that participants brainstorm potential solutions and develop action plans to address the previously identified problems. Participants should leave the workshop with new ideas, new contacts, an actionable plan and a clear roadmap towards net-zero cooling solutions for their project or industry.