term State means each of the 50 States and the District of Columbia, each of territories, and each of the Indian tribes. (13) Territory The term territory means the United States Virgin Islands, Puerto Rico, Guam, American Samoa, and the Commonwealth of the Northern Mariana Islands. (14) Weatherization The term weatherization means the practice of protecting a building and its interior from the elements, particularly from sunlight, precipitation, and wind, and of modifying a building to reduce energy consumption and optimize energy efficiency. 7. Authorization of appropriations (a) Appropriation for grants for planning assistance There is authorized to be appropriated $100,000,000 to carry out section 3 for each of fiscal years 2021 through 2025. (b) Appropriation for green roof installation There is authorized to be appropriated $300,000,000 to award grants under section 4(a) for each of fiscal years 2022 through 2025. (c) Appropriation for maintenance of infrastructure There is authorized to be appropriated $100,000,000 to provide funds under section 4(e) for each of fiscal years 2021 through 2025.