To authorize United States participation in, and appropriations for the United States contribution to, an international clean technology fund, and for other purposes.

Amends the Bretton Woods Agreements Act to authorize the Secretary of the Treasury to contribute to a Fund to promote accelerated deployment in developing countries of technologies designed to reduce greenhouse gas emissions.

Requires that such Fund be established and administered by the International Bank for Reconstruction and Development (IBRD).

Amends the the International Financial Institutions Act to direct the Secretary to seek to ensure that each multilateral development bank adopts and implements greenhouse gas accounting in analyzing the benefits and costs of all projects for which bank funding is sought.