Creates the Carbon Dioxide Geologic Storage Act. Provides that the Act applies to carbon dioxide injections that commence on or after January 1, 2021. Provides that a storage operator may not operate a storage facility without a reservoir permit issued by the Department of Natural Resources. Provides that a permit shall be issued if the storage operator: pays a fee to the Department of $0.08 per ton of carbon dioxide estimated to be injected into a storage facility; and owns all of the pore space in a storage facility, or owns more than 50%, but less than 100% of the pore space within a storage facility and an application to the Department to amalgamate the remaining property interests has been granted. Provides that after carbon dioxide injections at a storage facility cease, the storage operator may apply for a certificate of completion. Provides requirements the Department shall find before issuing a certificate of completion. Provides that the Department may adopt rules and issue orders to enforce the Act. Limits home rule powers. Provides for ownership and conveyance of pore space, mineral interests, title to carbon dioxide and liability, enhanced recovery projects, and restraint of trade. Creates the Illinois Geologic Sequestration Special Fund. Makes a corresponding change in the State Finance Act.