European Cultural Heritage is a crucial resource that must be maintained and preserved, to counteract degradation enhanced by unfavorable environmental conditions and climate changes. Conservation methodologies lack durability, sustainability and cost-effectiveness, and are typically based on energy-consuming processes or non-environmentally friendly materials. Coping with these issues, the project GREENART (GREen ENdeavor in Art ResToration, HORIZON EUROPE, Oct 2022 - Sept 2025), coordinated by CSGI, is working on new solutions based on green and sustainable materials and methods, to preserve, conserve and restore CH. Five classes of materials will be developed within the project: protective coatings based on green materials from waste and plant proteins; foams and packaging materials made by biodegradable/compostable polymers from renewable sources; consolidants based on natural polymers from renewable sources; green gels and cleaning fluids inspired by the most advanced systems currently available to conservators; green tech solutions for monitoring CH assets non-invasively against pollutants and environmental oscillations.