Private investors play a crucial role in funding climate change activities to shift towards a low carbon economy. The Paris Agreement in 2015 highlighted the need for trillions of dollars in investments for emission reduction and climate-resilient development. Public funds alone are not enough, so private sector investments must be increased through partnerships and incentives. These investments are essential for transitioning to low carbon economies, supporting technology transfers, and building resilience in developing countries. The study focuses on the challenges faced by private investors in Annex I countries in mobilizing additional climate finance to meet the Paris Agreement targets.