A case on CRANE, a tool to help investors and green technology companies estimate the future climate impact of new technologies and products, called emissions reduction potential (ERP). The case includes material on CRANE's methodology for estimating future carbon emissions, including the variables and parameters of the tool's model. CRANE was created by Prime Coalition (Prime), which organized hundreds of investors to establish industry standard terminology, methodologies, and best practices for estimating the climate impact of new investments. In 2022, Keri Browder, director of Project Frame, a nonprofit program convened by Prime, was focused on how to improve CRANE's technical capabilities, integrate with other available tools for pre- and post-investment decision-making, and make the effort as useful as possible for Prime and Project Frame's mission to mitigate climate change.