With India’s climate action plans gaining momentum, a pack of clean-tech start-ups have taken off the blocks, from renewable energy to electric mobility. However, to stay up with the global frontrunners in the sustainability race, they would need to find a way around a major stumbling block: Capital. That’s no mean task, because, as compared to fin-tech or deep-tech, ventures in the clean-tech space struggle to attract funds due to various challenges, including large capital costs, growth concerns, regulatory uncertainty and scalability.