The Grand Inga Dam project in the Democratic Republic of Congo aims to generate 40,000MW of clean renewable energy but faces significant financing challenges due to its estimated $80 billion cost. Financing options include strengthening domestic public finances by improving tax collection and transparency to unlock natural resource revenues, as well as harnessing private investors through risk guarantees. Multilateral development banks can play a key role by providing loans, technical assistance and risk mitigation to both the government and private sector. Overcoming obstacles like corruption and attracting sufficient financing will be critical to developing this ambitious infrastructure project.