; (B) district heating and cooling systems; and (C) infrastructure for delivering alternative fuels; . (3) Competitive grants Section 546(c)(2) of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17156(c)(2) ) is amended by inserting , including projects to expand the use of alternative fuels before the period at the end. (4) Funding Section 548(a) of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17158(a) ) is amended to read as follows: (a) Authorization of appropriations (1) Grants There is authorized to be appropriated to the Secretary for the provision of grants under the program $3,500,000,000 for each of fiscal years 2022 through 2026. (2) Administrative costs There is authorized to be appropriated to the Secretary for administrative expenses of the program $35,000,000 for each of fiscal years 2022 through 2026. . (5) Technical amendments Section 543 of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17153 ) is amended— (A) in subsection (c), by striking subsection (a)(2) and inserting subsection (a)(3) ; and (B) in subsection (d), by striking subsection (a)(3) and inserting subsection (a)(4) . (c) Smart Federal building program (1) Definitions In this subsection: (A) Secretary The term Secretary means the Secretary of Energy. (B) Smart building The term smart building means a building, or collection of buildings, with an energy system that— (i) is flexible and automated; (ii) has extensive operational monitoring and communication connectivity, allowing remote monitoring and analysis of all building functions; (iii) takes a systems-based approach in integrating the overall building operations for control of energy generation, consumption, and storage; (iv) communicates with utilities and other third-party commercial entities, if appropriate; (v) protects the health and safety of occupants and workers