Ohio Rev. Code Ann. § 5733.39
(A) As used in this section:
(1) "Compliance facility" means property that is designed, constructed, or installed, and used, at a coal-fired electric generating facility for the primary purpose of complying with acid rain control requirements under Title IV of the "Clean Air Act Amendments of 1990," 104 Stat. 2584, 42 U.S.C.A. 7651, and that controls or limits emissions of sulfur or nitrogen compounds resulting from the combustion of coal through the removal or reduction of those compounds before, during, or after the combustion of the coal, but before the combustion products are emitted into the atmosphere. "Compliance facility" also includes any of the following:
(B) An electric company shall be allowed a nonrefundable credit against the tax imposed by section 5733.06 of the Revised Code for Ohio coal used in any of its coal-fired electric generating units after April 30, 2001, but before January 1, 2010. Section 5733.057 of the Revised Code shall apply when calculating the credit allowed by this section. The credit shall be claimed at the following rates per ton of Ohio coal burned in a coal-fired electric generating unit during the taxable year ending immediately preceding the tax year: for tax years before tax year 2006, three dollars per ton; and for tax years 2006, 2007, 2008, and 2009, one dollar per ton. The credit is allowed only if both of the following conditions are met during such taxable year: