I agree to contribute to PV In Circular Economy, Dynamic Energy and Mass (PV_ICE) tool (previously known as Circular Economy - Mass Flow Calculator ("CE-MFC")). I agree to the following terms and conditions for my contributions: First, I agree that I am licensing the copyright to my contributions under the terms of the current PV_ICE license. Second, I agree that, in order to conform to any future open source software license(s) under which PV_ICE may be provided, the terms of my copyright license may be modified without any notice to me and without my consent. Third, I hereby grant to Alliance for Sustainable Energy, LLC, to any successor manager and distributor of PV_ICE appointed by the U.S. Department of Energy, and to all recipients of a version of PV_ICE that includes my contributions, a non-exclusive, worldwide, royalty-free, irrevocable patent license under any patent claims owned by me, or owned by my employer and known to me, that are or will be, necessarily infringed upon by my contributions alone, or by combination of my contributions with the version of PV_ICE to which they are contributed, to make, have made, use, offer to sell, sell, import, and otherwise transfer any version of PV_ICE that includes my contributions, in source code and object code form. Fourth, I represent and warrant that I am authorized to make the contributions and grant the foregoing license(s). Additionally, if, to my knowledge, my employer has rights to intellectual property that covers my contributions, I represent and warrant that I have received permission to make these contributions and grant the foregoing license(s) on behalf of my employer.