Iowa Attorney General Op. No. 11300050 (Aug. 30, 2011)

(taxpayer entitled to sales and use tax refund with respect to purchase of electricity used to run fans and pumps in cooling tower used to produce ethanol; electricity primarily used in ethanol manufacturing process; Iowa Code Sec. 423.3(47)(b) exempts sale of electricity consumed by machinery or equipment described in Sec. 423.3(47)(a) as being "directly and primarily used in processing by a manufacturer"; under Iowa Code Sec. 423.50, electricity is sales tax exempt when it is purchased and used in processing of tangible personal property that is intended to be sold ultimately at retail; "processing" included the conversion of raw material into marketable tangible personal property; cooling tower used directly and primarily in ethanol manufacturing process).