In this part: (1) Eligible entity The term “ eligible entity ” means— (A) a State ; (B) an eligible unit of local government ; and (C) an Indian tribe . (2) Eligible unit of local government The term “ eligible unit of local government ” means— (A) an eligible unit of local government-alternative 1 ; and (B) an eligible unit of local government-alternative 2 . (3) (A) Eligible unit of local government-alternative 1 The term “ eligible unit of local government-alternative 1 ” means— (i) a city with a population— (I) of at least 35,000; or (II) that causes the city to be 1 of the 10 highest-populated cities of the State in which the city is located; and (ii) a county with a population— (I) of at least 200,000; or (II) that causes the county to be 1 of the 10 highest-populated counties of the State in which the county is located. (B) Eligible unit of local government-alternative 2 The term “ eligible unit of local government-alternative 2 ” means— (i) a city with a population of at least 50,000; or (ii) a county with a population of at least 200,000. (4) Indian tribe The term “ Indian tribe ” has the meaning given the term in section 5304 of title 25 . (5) Program The term “ program ” means the Energy Efficiency and Conservation Block Grant Program established under section 17152(a) of this title . (6) State The term “ State ” means— (A) a State ; (B) the District of Columbia; (C) the Commonwealth of Puerto Rico ; and (D) any other territory or possession of the United States . ( Pub. L. 110–140, title V, § 541 , Dec. 19, 2007 , 121 Stat. 1667 .) Statutory Notes and Related Subsidiaries Effective Date Section effective on the date that is 1 day after Dec. 19, 2007 , see section 1601 of Pub. L. 110–140 , set out as a note under section 1824 of Title 2 , The Congress .