(a) This part applies to purchase of utility services from nonregulated and regulated utility suppliers. It includes the acquisition of liquefied petroleum gas as a utility service when purchased from regulated utility suppliers.

(b)(7) This part does not apply to third party financed projects. However, it may be used for any purchased utility services directly resulting from such projects, including those authorized by—

(A) 10 U.S.C. 2394 for energy, fuels, and energy production facilities for periods not to exceed 30 years;

(B) 10 U.S.C. 2394a for renewable energy for periods not to exceed 25 years;

(C) 10 U.S.C. 2917 for geothermal resources that result in energy production facilities;

(D) 10 U.S.C. 2809 for potable and waste water treatment plants for periods not to exceed 32 years; and

(E) 10 U.S.C. 2812 for lease/purchase of energy production facilities for periods not to exceed 32 years.