Sec. 11. Transactions involving tangible personal property are exempt from the state gross retail tax, if:
(1) the property is classified as production plant, storage plant, production expenses, or underground storage expenses according to the uniform system of accounts, which was adopted and prescribed for the utility by the Indiana utility regulatory commission; and
(2) the person acquiring the property is a public utility that furnishes or sells natural or artificial gas in a retail transaction described in IC 6-2.5-4-5.