Pub. L. 100-647, tit. IV, sec. 1006
EXTENSION OF CERTAIN BUSINESS ENERGY CREDITS.
SEC. 1006. EXTENSION OF CERTAIN BUSINESS ENERGY CREDITS. Each of the following provisions in the table under section 46(b)(2)(A) of the 1986 Code are amended by striking out “December 31, 1988” and inserting in lieu thereof “December 31, 1989”: (1) The item relating to the 10 percent credit in clause (viii). (2) The item relating to the 10 percent credit in clause (ix). (3) Clause (x).