The Attorney General shall represent the Public Service Commission in any and all legal proceedings which it may have the power to institute and which, pursuant to such power, it has instituted, and in all legal proceedings against it, and shall institute such legal proceedings which the commission may request or deem necessary, provided it has the power to institute them, to enforce the provisions of this title or compel obedience to and observance of the same by any person, firm, company, or corporation, upon which such obedience or observance is imposed. The Attorney General, with the approval of the Governor, may employ any special counsel to institute or defend such legal proceedings or to assist the Attorney General therein, and to contract with the special counsel concerning a reasonable compensation for his or their services, which compensation shall be paid out of the treasury on a warrant drawn by the comptroller on the treasury upon approval by the Governor.