tier 4 facility means, with respect to any taxable year, an electric generating facility using a type of technology which accounts for at least 1.5 percent but less than 2 percent of annual domestic electricity production in the preceding taxable year, as determined by the Secretary on the basis of data reported by the Energy Information Administration. (c) Credit period For purposes of this section, the credit period with respect to any qualified production facility is the 10-year period beginning with the date the facility was originally placed in service. (d) Qualified production facility For purposes of this section— (1) In general The term qualified production facility means any facility which— (A) was originally placed in service after the date of the enactment of this Act, (B) generates electricity, (C) is located in the United States or a possession of the United States (as such terms are used in section 638), (D) utilizes emerging technology, and (E) is certified by the Secretary, after consultation with the Secretary of Energy, as a qualified production facility for purposes of this section. (2) Denial of double benefit Such term shall not include any facility which has been treated as a qualified facility for purposes of section 45(d), as an advanced nuclear power facility for purposes of section 45J, as a qualified facility for purposes of section 45Q, as energy property for purposes of section 48, as a qualified investment for purposes of section 48A, 48B, or 48C, or as qualified emerging energy property for purposes of section 48D, for any taxable year. (e) Emerging technology For purposes of this section— (1) In general The term emerging technology means— (A) any new or improved power conversion fuel-based technology— (i) which— (I) reduces emission of air pollutants that can be reasonably anticipated to endanger public health or welfare to below the volume or rate required by the Clean Air Act, in the case of a type of facility which has significant emission of air pollutants, or (II) yields at