No. 14. Electricity Supply. 1973. to that Island, will be the rates prescribed by the Governor with the concurrence of the Company and published in the Gazette. (3) The Minister or the Company will be at liberty from time to time to serve on the other of them a notice in writing proposing that the tariff rates for the time being in force be varied in the manner specified in the notice or in such other manner as may be agreed in writing between them or as may be determined by arbitration in accordance with the provisions of sub-section (6) of this section. (4) If, during the period of 60 days following the ser- vice by either the Minister or the Company of any such notice, the other of them approves in writing the variation proposed in the notice or both of them agree in writing some other varia- tion, the variation so approved or agreed will take effect in the manner prescribed in sub-section (7) of this section. (5) If, during the aforesaid period of 60 days following the service bv either the Minister or the Company of any such notice, the other of them fails to approve in writing the variation proposed in the notice, or they fail to r gree in writing some other variation, then, the nature of the variation (if any) will be determined by a single arbitrator appointed in accordance with the provisions of sub-section (1) of section 30. (6) In determining whether any or what variation of the tariff rates should be made thP arbitrator shall have regard- (a) to the principle that the Company's revenues must be sufficient to enable the Company- ii (i) to meet all expenses incurred in the produc- tion of 3uch revenues, including depreciation of assets and interest on indebtedness, and (ii) to repay i's indebtedness, and (iii) to provide for such proportion of the cost of replacement of its assets as is not already provided under sub-paragraph (i) of this paragraph, and (iv) to provide a reasonable proportion of the capital cost of expanding its undertaking to meet any demand for an increased service to the public, and (v) to pay regular dividends on its share capital at a commercial rate; and