Darius Nassiry


Darius Nassiry is a former Principal with Rocky Mountain Institute’s Global Climate Finance program where he focused on systemic approaches align global investment with clean energy goals and engage financial institutions and policy-makers to support a low-carbon future.

He oversaw the build-out of several strategic initiatives as well as the program’s thought leadership work. RMI’s Global Climate Finance initiatives include the establishment of green investment banks in advanced emerging markets; creating a network of climate finance investment bankers for the least developed and most vulnerable countries; mapping out strategies for the orderly exit of capital tied up in coal-fired electricity assets; shifting the global discourse on climate finance to recognize financial flows into fossil energy, not just clean energy; and the piloting of auctioned carbon price floors. The program also provides cross-cutting financial expertise to other RMI programs.


Darius worked as an investment banker in the energy and utilities sector in New York, London and Tokyo. He designed a public-private renewable energy fund with the Norwegian Investment Fund for Developing Countries (Norfund),and conducted research on leveraging finance for clean technology as a visiting fellow with the Center for Global Development (CGD).

He contributed to policy research at the Overseas Development Institute (ODI) on energy and climate change focusing on sustainable infrastructure, financing of climate commitments under the Paris Agreement, leveraging private capital for climate investments, and implications of new technologies for developing countries. He also initiated ODI’s work on the digital economy.

Earlier he served as advisor to the Director-General and head of international cooperation at the Global Green Growth Institute (GGGI). Earlier he led country teams at the Millennium Challenge Corporation (MCC) responsible for investment programs in Asia and launched the agency’s climate change initiative. Darius began his career as a U.S. diplomat in Mexico and Kenya.


Master’s in Public and International Affairs, Woodrow Wilson School, Princeton University

Bachelor of Arts, Biology, Carleton College


Washington, DC

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