With climate change posing alarming threats to communities across India, subnational climate leadership is essential to meet climate and development targets. Many Indian states are spearheading key initiatives to elevate India’s climate ambition to the next level, acting as frontiers for climate action. The ten case studies in this Compendium were developed as part of Climate Group’s India States Climate Leadership Project. Launched the State climate action series to shine a light on the best practices and success stories from Indian states. As part of this, have published case studies across thematic areas and geographies in India. This Compendium is a collation of the best practices which showcased the state climate action leadership and promoted knowledge exchange, peer learning and global profiling. Through the Compendium, aim to showcase these states and their rightful role as leaders in unlocking barriers to climate solutions.