; and (II) (aa) during the period beginning on the date of enactment of this section and ending on December 31 of the second full calendar year beginning after that date of enactment, a rate of 1.5 cents per kilowatt-hour; and (bb) for each calendar year thereafter, the rate described in item (aa) for the preceding calendar year— (AA) increased by 3 percent; and (BB) adjusted for inflation, as the Secretary determines to be necessary. (B) Fast growth rate For purposes of paragraph (2)(B)(i)(I), the fast growth rate shall be— (i) for the calendar year in which this section is enacted, 2.75 percentage points; (ii) for the first calendar year beginning after the date of enactment of this section and each calendar year thereafter that is not a rate increase-adjusted calendar year or a rate decrease-adjusted calendar year, the fast growth rate for the preceding calendar year; (iii) for a rate increase-adjusted calendar year, the fast growth rate for the preceding calendar year, increased by 0.5 percentage points; and (iv) for a rate decrease-adjusted calendar year, the fast growth rate for the preceding calendar year, decreased by 0.25 percentage points, down to a minimum of 2.75 percentage points. (C) Slow growth rate For purposes of paragraph (2)(B)(i)(II), the slow growth rate shall be— (i) for the calendar year in which this section is enacted, 1.75 percentage points; (ii) for the first calendar year beginning after the date of enactment of this section and each calendar year thereafter that is not a rate increase-adjusted calendar year or a rate decrease-adjusted calendar year, the slow growth rate for the preceding calendar year; (iii) for a rate increase-adjusted calendar year, the slow growth rate for the preceding calendar year, increased by 0.5 percentage points