; (B) in clause (x), by striking the period and inserting ; and ; and (C) by adding at the end the following: (xi) a medium intensity approach lighting system with runway alignment indicator lights. ; (2) by redesignating subparagraphs (Q) and (R) as subparagraphs (S) and (T), respectively; (3) by redesignating subparagraphs (M) through (P) as subparagraphs (N) through (Q), respectively; (4) by inserting after subparagraph (L) the following: (M) constructing or acquiring airport-owned infrastructure or equipment, notwithstanding revenue producing capability, as defined in subsection (24), required for the on-airport distribution or storage of unleaded aviation gas for use by piston-driven aircraft, including on-airport construction or expansion of pipelines, storage tanks, low-emission fuel systems, and airport-owned and operated fuel trucks providing exclusively unleaded aviation fuels, unless the Secretary determines that an alternative fuel may be safely used for a limited time. ; (5) by inserting after subparagraph (Q) (as redesignated by paragraph (3)), the following: (R) acquiring or installing new renewable energy generation infrastructure (such as solar, geothermal, or wind) that provide power for on-airport uses and energy storage systems, and necessary substation upgrades to support such infrastructure.