The Louisiana Public Service Commission applied to this Court for review of the district court’s issuance of a writ of mandamus ordering it to render its decision on South Central Bell’s application for a rate increase no later than April 18, 1976, and, in default thereof, ordering it to permit South Central Bell to put into effect the proposed rate increase, conditioned upon South Central Bell furnishing bond or security to insure full refund, with legal interest to telephone subscribers should the increase ultimately be determined excessive. This Court granted writs with a stay order in order to review the district court’s judgment. La., 329 So.2d 683 (1976).
South Central Bell filed an application for a rate increase on April 18, 1975, which has not been acted upon by the Commission.1 On April 8, 1976, the district court issued a mandamus ordering the Commission to render its decision no later than April 18, 1976. In default of a timely decision, the Commission was ordered to put the proposed rate increase, subject to a bond to assure refunds.
The questions presented for our review are two: (1) is mandamus relief proper, and (2) may the courts order the increased rates into effect under bond' in the present case until such time as there is a ruling upon the rate increase application by the Commission ?
Article 4, Section 21 (D) (2) and (3) of the Louisiana Constitution of 1974 provide:
“(2) Within twelve months after the effective filing date, the commission shall render a full decision on each application, petition, and proposed rate schedule.
“(3) After the effective filing date of any proposed schedule by a public utility which would result in a rate increase, the commission may permit the proposed schedule to be put into effect, in whole or in part, pending its decision on the application for rate increase and subject to protective bond or security approved by the commission. If no decision is rendered on the application within twelve months after such filing date, the proposed increase may be put into effect, but only if and as provided by law and subject to protective bond or security requirements, until final action by a court of last resort.”
We find mandamus a proper remedy. The Commission is constitutionally required to render a decision within twelve months from the filing of an application. LSA-Const. Art. 4 § 21(D)(2) (1974). While mandamus does not lie to require a particular decision, it does lie to require public officials and agencies to render a decision required by law. Bussie v. Long, 257 La. 623, 243 So.2d 776 (1971); Delord v. Lozes et al., 142 La. 328, 76 So. 759 (1917); Karno v. Louisiana Tax Commission, 233 So.2d 592 (La.App. 4th Cir. 1970), writ refused 256 La. 251, 236 So.2d 30 (1970).
The contingent rate increase ordered by the trial judge presents a more difficult *191question. Article 4 § 21(D)(3) of the 1974 Constitution provides:
“If no decision is rendered . . . the proposed increase may be put into effect, but only if and as provided by law and subject to protective bond or security requirements, until final action by a court of last resort.” (Italics ours.)
The legislature has enacted no law implementing the protective bond procedure, and the Commission is under no duty to establish its own. Further, the Constitutional Convention Debate 117th Day’s Proceedings, pp. 76-77 makes it clear that no increase may go into effect, absent a ruling by the Commission, until the State Legislature adopts enabling legislation. For the Court to order the provisional rate increase in effect, absent enabling legislation, would be contrary to the constitutional provision.
South Central Bell contends, however, that the district court had the authority under its equity powers to order the rate increase in default of a prompt decision. The Constitution, however, has dealt with the subject of rate increases based on delayed decisions and relegated the matter to legislative action. Hence, the area is not one where there is no express law. LSA-C.C. Art. 21. We conclude, therefore, that the order was improvidently issued.
Admittedly, in 1975, South Central Bell earned a rate of return on equity of 8.6 percent. Under our prior holdings, this rate does not justify judicial intervention at this stage in the rate-making process. See South Central Bell Tel. Co. v. L.P.S.C., 272 So.2d 667 (La.1973); South Central Bell Tel. Co. v. L.P.S.C., 256 La. 497, 236 So.2d 813 (1970).
The year within which South Central Bell was entitled to a decision has now expired. The Commission assigns as the reason for delay the reorganization of the Commission under the 1974 Constitution. In the posture of the case, it is imperative that the case be brought to a speedy conclusion. Hence, we conclude that a mandamus should issue, ordering the Commission to render its decision without undue delay.
For the reasons assigned, the judgment of the district court is reversed and set aside. It is ordered, adjudged, and decreed that a writ of mandamus issue herein to the Louisiana Public Service Commission and to its members, directing the Commission to render its decision on South Central Bell Telephone Company’s application for a rate increase (Commission Docket Number U-12785) no later than thirty days from the finality of this judgment.
SUMMERS, J., dissents and assigns reasons.
DIXON, J., concurs.