Assembly Bill 657 proposes a sales and use tax exemption for specific items utilized exclusively in certified nuclear fusion technology projects in Wisconsin. The bill defines a qualified nuclear fusion technology project as one focused on the controlled fusion of atomic nuclei or related research, and it specifies a comprehensive list of eligible items for the exemption. These items include various advanced technologies and equipment such as data acquisition software, ion cyclotron resonance heating systems, high-voltage power supplies, superconductors, and personal protective equipment, among others.

The bill aims to promote the development of nuclear fusion technology by reducing the financial burden associated with the purchase of necessary equipment and materials. It is anticipated that this exemption will encourage investment in nuclear fusion projects, thereby fostering innovation and economic growth in the state. The bill has been referred to the Committee on Ways and Means for further consideration, and it may also be reviewed by the Joint Survey Committee on Tax Exemptions due to its implications on state and local tax revenues.