(35 ILCS 173/5-50)
    Sec. 5-50. Exemptions. The tax imposed under this Act shall not apply to:
        (1) Gas used by business enterprises located in an
    
enterprise zone certified by the Department of Commerce and Economic Opportunity pursuant to the Illinois Enterprise Zone Act;
        (2) Gas used by governmental bodies, or a
    
corporation, society, association, foundation, or institution organized and operated exclusively for charitable, religious, or educational purposes. Such use shall not be exempt unless the government body, or corporation, society, association, foundation, or institution organized and operated exclusively for charitable, religious, or educational purposes has first been issued a tax exemption identification number by the Department of Revenue pursuant to Section 1g of the Retailers' Occupation Tax Act. A limited liability company may qualify for the exemption under this Section only if the limited liability company is organized and operated exclusively for educational purposes. The term "educational purposes" shall have the same meaning as that set forth in Section 2h of the Retailers' Occupation Tax Act;
        (3) Gas used in the production of electric energy.
    
This exemption does not include gas used in the general maintenance or heating of an electric energy production facility or other structure;
        (4) Gas used in a petroleum refinery operation;
        (5) Gas purchased by persons for use in liquefaction
    
and fractionation processes that produce value added natural gas byproducts for resale;
        (6) Gas used in the production of anhydrous ammonia
    
and downstream nitrogen fertilizer products for resale.
    The Department may adopt rules to implement the provisions of this Section.
(Source: P.A. 93-31, eff. 10-1-03.)