" These paragraphs were amended in 1956 to read: " Not withstanding anything contained in the , except sub section (2) of section 32A, and the provisions in the licence of a licensee, the licensee shall so adjust his rates for the sale of electricity whether by enhancing or reducing them that his clear profit in any year of account shall not, as far as possible, exceed the amount of reasonabe return: Provided that such rates shall not be enhanced more than once in any year of account: Provided further that the licensee shall not be deemed to have failed so to adjust his rates if the clear profit in any year of account has not exceeded the amount of reasonable return by fifteen per centum of the amount of reasonable return: Provided further that the licensee shall not enhance the rates for the supply of electricity until after the expiry of a notice in writing of not less than sixty clear days of his intention to so enhance the rates, given by him to the State Government and to the Board: Provided further that if the rates of supply fixed in pursuance of the recommendations of a rating committee constituted under section 57A are lower 527 than those notified by the licensee 'under and in accordance with the preceding proviso, the licensee shall refund to the consumers the excess amount recovered by him from them.