(1) The amount of the industrial facility tax, in each year for a replacement facility, shall be determined by multiplying the total mills levied as ad valorem taxes for that year by all taxing units within which the facility is situated by the taxable value of the real and personal property of the obsolete industrial property for the tax year immediately preceding the effective date of the industrial facilities exemption certificate after deducting the taxable value of the land and of the inventory as specified in section 19.

    (2) The amount of the industrial facility tax, in each year for a new facility or a speculative building for which an industrial facilities exemption certificate became effective before January 1, 1994, shall be determined by multiplying the taxable value of the facility excluding the land and the inventory personal property by the sum of 1/2 of the total mills levied as ad valorem taxes for that year by all taxing units within which the facility is located other than mills levied for school operating purposes by a local school district within which the facility is located or mills levied under the state education tax act, 1993 PA 331, MCL 211.901 to 211.906, plus 1/2 of the number of mills levied for local school district operating purposes in 1993.

    (3) Except as provided in subsection (4), the amount of the industrial facility tax in each year for a new facility or a speculative building for which an industrial facilities exemption certificate becomes effective after December 31, 1993, shall be determined by multiplying the taxable value of the facility excluding the land and the inventory personal property by the sum of 1/2 of the total mills levied as ad valorem taxes for that year by all taxing units within which the facility is located other than mills levied under the state education tax act, 1993 PA 331, MCL 211.901 to 211.906, plus, subject to section 14a, the number of mills levied under the state education tax act, 1993 PA 331, MCL 211.901 to 211.906.

    (4) For taxes levied after December 31, 2007, for the personal property tax component of an industrial facilities exemption certificate for a new facility or a speculative building that is sited on real property classified as industrial real property under section 34c of the general property tax act, 1893 PA 206, MCL 211.34c, the amount of the industrial facility tax in each year for a new facility or a speculative building shall be determined by multiplying the taxable value of the facility excluding the land and the inventory personal property by the sum of 1/2 of the total mills levied as ad valorem taxes for that year by all taxing units within which the facility is located other than mills levied on industrial personal property under the state education tax act, 1993 PA 331, MCL 211.901 to 211.906, and the number of mills from which industrial personal property is exempt under section 1211(1) of the revised school code, 1976 PA 451, MCL 380.1211. For taxes levied after December 31, 2007, for the personal property tax component of an industrial facilities exemption certificate for a new facility or a speculative building that is sited on real property classified as commercial real property under section 34c of the general property tax act, 1893 PA 206, MCL 211.34c, the amount of the industrial facility tax in each year for a new facility or a speculative building shall be determined by multiplying the taxable value of the facility excluding the land and the inventory personal property by the sum of 1/2 of the total mills levied as ad valorem taxes for that year by all taxing units within which the facility is located other than the number of mills from which the property is exempt under section 1211(1) of the revised school code, 1976 PA 451, MCL 380.1211. As used in this subsection, “industrial personal property” means the following:

    (a) Except as otherwise provided in subdivision (b), personal property classified under section 34c of the general property tax act, 1893 PA 206, MCL 211.34c, as industrial personal property.

    (b) Beginning December 31, 2011, industrial personal property does not include a turbine powered by gas, steam, nuclear energy, coal, or oil the primary purpose of which is the generation of electricity for sale.

    (5) For a termination or revocation of only the real property component, or only the personal property component, of an industrial facilities exemption certificate as provided in this act, the valuation and the tax determined using that valuation shall be reduced proportionately to reflect the exclusion of the component with respect to which the termination or revocation has occurred.