Carbon capture and sequestration.

Wyoming's SF 64 (proposed in 2022) required public utilities operating coal-fired power plants over 200 megawatts to consider installing carbon capture technology if planning to retire those facilities. It gave utilities three options: install the technology themselves (with cost recovery rules), partner with a third party for installation, or sell the facility to a buyer who will install it, while requiring utilities to report on these plans. The bill also mandated the Public Service Commission to publish a list of retiring plants and hold hearings on third-party proposals for carbon capture. However, the bill was withdrawn by its sponsor on February 18, 2022, and never became law.