The Generation IV roadmap process culminated in the selection of six Generation IV systems. The motivation for the selection of six systems is to

• Identify systems that make significant advances toward the technology goals,
• Ensure that the important missions of electricity generation, hydrogen and process heat production, and actinide management may be adequately addressed by Generation IV systems,
• Provide some overlapping coverage of capabilities, because not all of the systems may ultimately be viable or attain their performance objectives and attract commercial deployment,
• Accommodate the range of national priorities and interests of the GIF countries.