Nothing contained in NRS 709.050 to 709.170, inclusive, must be so construed as to deprive the Public Utilities Commission of Nevada of full power to regulate and control, as prescribed by law, the service, practices, regulations and charges, subject to the maximum charges fixed by the board of county commissioners upon granting the franchise, and subject also to the provisions of NRS 709.110, of all utilities receiving franchises as provided in NRS 709.050 to 709.170, inclusive.