Adds a new paragraph (22) to subsection (d) of 16 U.S.C. 2621 establishing a 'Data centers' standard requiring States that have or have proposed data centers to consider establishing a data center-specific rate class and to consider specified requirements (e.g., minimum demand charges, extended contract lengths, increased interconnection study costs/deposits, phased service start periods, clean transition tariffs, and use of contribution in aid of construction).

Amends 16 U.S.C. 2622 by (1) adjusting formatting in subsection (b)(8) and adding a new paragraph (9) to subsection (b) that imposes 1-year and 2-year time limits for States and nonregulated utilities to commence and complete consideration of the new paragraph (22) standard, (2) adding clarifying text to subsection (c) that references to 'the date of enactment of this Act' shall be read as references to the date of enactment of paragraph (22) for that standard, and (3) adding a new subsection (i) (Prior State actions) specifying that subsections (b) and (c) do not apply where certain state actions occurred before enactment.

Amends 16 U.S.C. 2634 by adding a provision that, in the case of the standard established by paragraph (22) of section 111(d), the section's existing references to 'the date of enactment of this Act' shall be deemed to be references to the date of enactment of paragraph (22).