Under the Senate Finance Committee’s June 28th version of the One, Big, Beautiful Bill (the “Bill”), there are several limitations and requirements that would take effect based on the date a project begins construction. For solar and wind projects, unless construction begins prior to enactment of the Bill, the production tax credit and investment tax credit under section 45Y and 48E will terminate for projects that are placed in service after 2027. Additionally, certain restrictions on material assistance from prohibited foreign entities would apply to solar and wind projects which begin construction after June 16th and most other projects that begin construction after 2025. The provisions of the Bill are still being negotiated in the Senate. However, establishing the beginning of construction will almost certainly remain important for developers of renewable energy projects.








