It is declared by the General Assembly of Georgia that in the exercise of powers specifically granted to them by law, local governing authorities of cities and counties are acting pursuant to state policy. OCGA § 36-65-1
This chapter is intended to articulate clearly and express affirmatively the policy of the State of Georgia that in the exercise of such powers, such local governing authorities shall be immune from antitrust liability to the same degree and extent as enjoyed by the State of Georgia. OCGA § 36-65-2