The U.S. Department of Energy’s (DOE) Building Technologies Office (BTO) developed the Prioritization Tool to improve its programmatic decision-making. The tool provides an objective framework for most energy-saving measures and scenarios, as well as methodology, comparing long-term benefits and end-user costs applied to various markets, end-uses, and lifetimes. BTO seeks comments and information related to the Prioritization Tool that improves the tool's accuracy and applicability for technology planning within BTO. Specifically, this notice solicits comments and information on data, assumptions and outputs of various energy efficiency technologies and activities analyzed by the Prioritization Tool.