; (B) identifies the remaining challenges in achieving carbon sequestration that is reliable and safe for the environment and public health; and (C) creates a roadmap to integrate geologic sequestration sites and carbon utilization with large sources of carbon dioxide in the United States economy. (5) Large-scale carbon sequestration For purposes of this subsection, large-scale carbon sequestration means the injection of more than 1,000,000 tons of carbon dioxide annually or a scale that demonstrates the ability to inject and sequester several million metric tons carbon dioxide for at least 10 years. (d) Integrated storage projects The Secretary may carry out a program for purposes of tran­si­tion­ing the large-scale storage demonstrations under subsection (c) into integrated, commercial storage complexes. The program shall focus on— (1) qualifying geologic storage sites in order to accept large volumes of carbon dioxide acceptable for commercial contracts; (2) understanding the technical and commercial viability of storage sites; (3) developing the qualification processes that will be necessary for a diverse range of geologic storage sites to commercially accept carbon dioxide; and (4) any other activities the Secretary deems necessary to transition the large scale demonstration storage projects into commercial ventures. (e) Cost sharing The Secretary shall require cost sharing under this section in accordance with section 988. (f) Authorization of appropriations For activities under this section, there are authorized to be appropriated to the Secretary— (1) $105,000,000 for fiscal year 2019; (2) $110,250,000 for fiscal year 2020; (3) $115,763,000 for fiscal year 2021; (4) $121,551,000 for fiscal year 2022