if- PUBLIC LAW 106-170—DEC. 17, 1999 113 STAT. 1923 "(ii) sold to a utility pursuant to a contract originally entered into before January 1, 1987 (whether or not amended or restated after that date). "(B) EXCEPTION.— Subparagraph (A) shall not apply "(i) the prices for energy and capacity from such facility are established pursuant to an amendment to the contract referred to in subparagraph (A)(ii), "(ii) such amendment provides that the prices set forth in the contract which exceed avoided cost prices ' determined at the time of delivery shall apply only to annual quantities of electricity (prorated for partial years) which do not exceed the greater of— "(I) the average annual quantity of electricity sold to the utility under the contract during calendar years 1994, 1995, 1996, 1997, and 1998, or "(II) the estimate of the annual electricity production set forth in th(3 contract, or, if there is no such estimate, the greatest annual quantity of electricity sold to the utility under the contract in any of the calendar years 1996, 1997, or 1998, and "(iii) such amendment provides that energy and capacity in excess of the limitation in clause (ii) may be— "(I) sold to the utility only at prices that do not exceed avoided cost prices determined at the time of delivery, or "(II) sold to a third party subject to a mutually agreed upon advance notice to the utility. For purposes of this subparagraph, avoided cost prices shall be determined as provided for in 18 CFR 292.304(d)(1) or any successor regulation.". (d) EFFECTIVE DATE.—The amendments made by this section 26 USC 45 note. shall take effect on the date of the enactment of this Act. SEC. 508. EXTENSION OF DUTY-FREE TREAT»IENT UNDER GENERAL- IZED SYSTEM OF PREFERENCES. (a) IN GENERAL.—Section 505 of the Trade Act of 1974 (19 U.S.C. 2465) is amended by striking "June 30, 1999" and inserting "September 30, 2001". (b) EFFECTIVE DATE.— 19 USC 2465 (1) IN GENERAL.— The amendment made by this section "o^. applies to articles entered on or after the date of the enactment of this Act. (2) RETROACTIVE APPLICATION FOR CERTAIN LIQUIDATIONS AND RELIQUIDATIONS. — (A) GENERAL RULE. — Notwithstanding section 514 of the Tariff Act of 1930 or any other provision of law, and subject to paragraph (3), any entry— (i) of an article to which duty-free treatment under title V of the Trade Act of 1974 would have applied if such entry had been made on July 1, 1999, and such title had been in effect on July 1, 1999; and (ii) that was made— (I) after June 30, 1999; and
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