Section 3
SEC. 3. This franchise is granted subject to the provisions of the Constitution, and of Commonwealth Act numbered One hundred forty-six, as amended, as far as rates are concerned: Provided, That after the Public Service Commission shall have authorized the rates that the grantee shall charge, the grantee shall be subject to inspection and supervision regarding the maintenance and operation of its plant by the Public Service Commission, which shall from time to time enforce its rules and regulations."