(a) The following businesses or practitioners shall be excluded from occupation tax, registration fees, or regulatory fees under the provisions of this article but shall be subject to taxation and regulation as otherwise provided by general law and municipal charters:

(1) Those businesses regulated by the Georgia Public Service Commission;

(2) Those electrical service businesses organized under Chapter 3 of Title 46; and

(3) Any farm operation for the production from or on the land of agricultural products, but not including any agribusiness.

(b) This article shall not be construed to repeal other provisions of general law relating to local governments' occupation tax, registration fees, or regulatory fees for businesses or practitioners of professions or occupations.