; (B) that has historically relied on fossil fuel mining, extraction, or production related activity for a substantial portion of its economy; or (C) in which the economic contribution of fossil fuel mining, extraction or production related activity has significantly declined. (7) Fossil fuel dependent communities The term fossil fuel dependent communities means a community— (A) that depends on fossil fuel mining, and extraction, or refining for a significant amount of economic opportunities; or (B) where a significant proportion of the population is employed at electric generating stations that use fossil fuels as the predominant fuel supply. 40230. Evaluation by Comptroller General of the United States Not later than 2 years after the date of enactment of this Act, and biennially thereafter, the Comptroller General of the United States shall submit to the Committees on Energy and Commerce and Natural Resources of the House of Representatives, and the Committees on Environment and Public Works and Energy and Natural Resources of the Senate, a report that contains an evaluation of the effectiveness of each activity carried out under this subtitle and the amendments made by this subtitle. C Low-Income Solar Energy 40301. Short title This subtitle may be cited as the Low-Income Solar Energy Act . 40302. Definitions In this subtitle, the term low-income , used with respect to a household, means a household that is eligible for a payment under the Low-Income Home Energy Assistance Act of 1981 ( 42 U.S.C. 8621 et seq.), in accordance with— (1) section 2605(b)(2) of such Act ( 42 U.S.C. 8624(b) )