(1) "Agricultural consumer" means a public utility customer whose utility service is classified as an agricultural user or an irrigation user pursuant to a utility tariff established by the commission or a public utility customer who is seeking such tariff status.
(2) "Commission" means the public utilities commission created in article 2 of this title.
(3) "Public utility" means an electric utility or gas utility.
(4) "Residential consumer" means a public utility customer whose utility service is limited to his residence.
(5) "Small business consumer" means a public utility customer whose utility service is classified as a small business user or a small commercial user pursuant to a utility tariff established by the commission or a public utility customer who is seeking such tariff status.