The Green Climate Fund (GCF) was established to help developing countries mitigate and adapt to climate change. It aims to mobilize $100 billion annually by 2020 from public and private sources. The GCF Private Sector Facility directs funds to private sector climate projects. However, barriers like high costs and risk hamper private investment. Tools like concessional finance, green bonds, and yieldcos can help mitigate risks and leverage private capital. The African Development Bank can influence policies and provide de-risking instruments to unlock renewable energy investment across Africa.