A coming after the commencement of the Interest Act of 1978 an arbitrator has the same power as the Court to award interest up to the date of institution of the proceedings. In cases which arose prior to the commencement of the Interest Act 1978, the arbitrator has no such power under provisions of the previous 8 Interest Act of 1839. In the instant case, as pointed out above, there is no dispute about the competence of the arbitrator to grant interest. The arbitrator, as noted above, granted interest but did not grant any interest after the date of the award till the date of the decree. Therefore, the decision in Abhaduta Jena C (supra) has no relevance. Reference was also made to the decision of this Court in the case of Gujarat Water Supply and Sewerage Board vs. Unique Erectors (Gujarat) (P) Ltd. and another - (1989) 1 SCC 532, wherein a two-Judge Bench of this Court relied on the previous decision of this Court in · Abhaduta Jena (supra) and dealt with the aspect of grant of D interest by the arbitrator in paragraphs 14, 15 and 16 of the said judgment. In Gujarat Water Supply (supra), this Court held that an arbitrator can award. the interest which can cover three periods namely; (a) the perio,d prior to the commencement of the arbitration proceeding, (b) period during which the E arbitration proceeding was pending and (c) the period between the date of the award to the date of the decree i.e. the post award period. The learned Judge has held that in the light of the decision in At. 1aduta Jena (supra) the arbitrator could not have awarded interest "for the period between August 22, 1984 F and till the date of the publication of the award i.e. July 1985". That was the period during which the arbitration proceeding was pending. Ultimately, the Court deleted the interest awarded by the arbitrator for the period from August 22, 1984 till the date of the award. (See para 16 of the report). It may be again G pointed out here that in this case the award in which interest has been given by the arbitrator has been finally upheld. Therefore, the principles decided in Gujarat Water Supply (supra) have no application to the facts of the case.