; and (II) uses direct measurements of the applicable facilities, which may include measurements made in the course of participation in a voluntary program or public disclosure of the quantified methane emission intensity of the applicable facilities. (ii) Public availability The information provided to the Secretary by a generator to make a determination under this subparagraph shall be available to the public upon such determination. (C) Standards The Secretary shall promulgate the standards for measurement necessary to implement subparagraph (A) not less than 2 years after the date of enactment of this title and shall update such standards every 5 years thereafter, based on the best available science. (3) Hydropower utilizing a new reservoir In determining the carbon intensity of each generating unit using hydropower associated with a reservoir constructed after the date of enactment of this Act, the Secretary shall account for the greenhouse gas emissions that can be attributed to the hydropower facility, including the applicable new reservoir. (e) Quantity of credits issued for certain categories of generating units (1) Qualified combined heat and power systems (A) In general The Secretary shall issue to a generator generating zero-emission electricity during a calendar year using a generating unit that is a qualified combined heat and power system a quantity of zero-emission electricity credits for such generation that is equal to— (i) the product obtained by multiplying— (I) the number of megawatt-hours of electric energy generated by the qualified combined heat and power system during such calendar year; by (II) the number that equals— (aa) 1.0; less (bb) the quotient obtained by dividing— (AA) the carbon intensity of the qualified combined heat and power system; by (BB) 0.82; less (ii) the product obtained by multiplying— (I) the number of megawatt-hours of electric energy generated by the qualified combined heat and power system that are consumed onsite during such calendar year