S.425: A bill to amend the Internal Revenue Code of 1986 to expand the resources eligible for the renewable energy credit to kinetic hydropower, and for other purposes.

Amends the Internal Revenue Code to include kinetic hydropower as a renewable resource eligible for the tax credit for electricity produced from certain renewable resources. Defines "kinetic hydropower" as: (1) ocean free flowing water derived from flows from tidal currents, ocean currents, waves, or estuary currents; (2) ocean thermal energy; or (3) free flowing water in rivers, lakes, man made channels, or streams.