An NRC committee will define and evaluate key external costs and benefits--health, environmental, security, and infrastructure--associated with the production, distribution, and consumption of energy from various selected sources that are not or may not be fully incorporated into the market price of such energy, or into the Federal tax or fee or other applicable revenue measures related to such production, distribution, or consumption. Although the committee will carry out its task from a U.S. perspective, it will consider broader geographic implications of externalities when warranted and feasible.