The Carbon Storage Program contains three principal components: Core Research and Development (R&D), Infrastructure, and Program Support (Strategic). Core R&D involves both applied laboratory-and pilot-scale research focused on adapting existing and developing new technologies and systems for geologic storage. Core R&D encompasses three Technology Areas: (1) Geologic Storage Technologies and Simulation and Risk Assessment (GSRA); (2) Monitoring, Verification, Accounting (MVA), and Assessment; and (3) Carbon Use and Reuse. The GSRA Technology Area is subdivided into six Key Technologies (wellbore; mitigation; fluid flow, pressure, and water management; geomechanical impacts; geochemical impacts; and risk assessment). The MVA Technology Area is subdivided into four Key Technologies (atmospheric monitoring; near-surface monitoring; subsurface monitoring; and intelligent monitoring). The Carbon Use and Reuse is subdivided into three Key Technologies (polycarbonate plastics, mineralization/cements, and chemicals). This paper addresses the Core R&D geologic storage effort and how it is meeting the R&D challenges in the GSRA and MVA Technology Areas. (C) 2014 The Authors. Published by Elsevier Ltd.