Plaintiffs appeal from a dismissal of their cause of action which, among other things not relevant to this appeal, sought a judgment declaring the city of Traverse City’s ordinance amendment 102 invalid.
The center of the controversy is a light and power plant which has been owned and operated by the city of Traverse City since 1928. The plant is situated on the waterfront at the south end of the west .Grand Traverse bay and supplies the electrical needs of the city, its residents, and industrial concerns. After the completion of an extensive study, the city commission in February, 1965, adopted an ordinance authorizing the issuance of $2,500,000 in self-liquidating revenue bonds for the purpose of building an addition to the present' light and power plant. A referendum election on this ordinance resulted in a 2-to-l vote in favor of issuing the bonds. Following the favorable referendum election, the city sold the *95revenue bonds and entered into numerous contracts which obligated the city to expend more than $2,000,-000. .
The plans for the project revealed that the rear portion of the planned addition was designed to be 98 feet high. In June, 1966, plaintiff David L. Stif-fler, who owned property a few lots west of the power plant, advised the city that the zoning ordinance only permitted construction of 75-foot-high buildings. In order to comply with that ordinance the proposed addition would have to be redesigned, to a 75-foot height by leaving certain coal handling-equipment exposed on top of the building. This would cost approximately $150,000 and even then the legal effect of the redesign would be contingent upon a liberal construction of a section of the city’s zoning ordinance which excepts “necessary mechanical appurtenances” from height limitations. Exposing the coal equipment would impair the appearance of the addition and would adversely affect the safety of the employees. Relocation of the plant would cost an additional $800,000, not including site costs'
As the result of much expert consultation and commission deliberation, ordinance amendment 102 was adopted by the city commission on July 18,1966. It provided:
“The city of Traverse City ordains: That chapter 14, section 14.152 shall be amended to add subsection 4 to read as follows:
“4. Public utility buildings in M-l & M-2 zones may be erected to a' height not exceeding 100 feet provided that the structure is set back from all required yard lines a distance of one foot for each three feet of its height above 75 feet said setback to apply only to that portion of the structure above 75 feet in height.”
No referendum was sought on this amendment.
*96On July 1, 1966, the city paid $110,000 plus interest as the first principal payment on the revenue bond obligations. On August 11, 1966, the contract for construction was awarded and construction began that same month. This action was commenced September 30, 1966, and was tried and dismissed in November, 1966.
Plaintiffs contend on appeal that in adopting ordinance amendment 102 the city commission acted arbitrarily, capriciously, and discriminatorily. They primarily rely upon Taber v. City of Benton Harbor (1937), 280 Mich 522, where the Court restrained the erection of a 140-foot water tower in a residentially zoned area by holding that a city must comply with its zoning ordinances. The Taber Case is distinguishable because there the Court was not considering a legislative act of rezoning. On page 526 of Taber, supra, the Court said:
“Under the circumstances in this case, no sound reason is perceived why the city should not be bound by the ordinance in question so long as such ordinance is in force and defendant is not excepted from its provisions as would be an individual or private corporation in attempting to engage upon the same project under the same conditions. It is undoubtedly true that under the provisions of the charter the city owes a duty to its inhabitants to maintain an adequate water system, but in so providing it cannot proceed in disregard of the plain legislative enactments of the duly elected representatives of its citizens.” (Emphasis supplied.)
If the “plain legislative enactments of the duly elected representatives” alter zoning regulations in a given area as in the case at hand, such legislative judgment should not be disturbed by the judicial branch of government unless the exercise of that judgment bears no reasonable relationship to the *97public interest.1 In Lamb v. City of Monroe (1959), 358 Mich 136, tbe Supreme Court said at pages 143 and 144:
“It is not tbe function of tbis Court, or of any court, to approve or disapprove zoning ordinances as to wisdom or desirability. An appeal lies, it is true, from tbe legislative determination, but it is to tbe ballot box, not to tbe courts. If tbe legislative body bas authority to act in tbe premises, and tbe requirements of administrative due process bave been observed witb respect to tbe adoption, interpretation, and administration of tbe ordinance, we will not disturb tbe legislative judgment or tbe executive action. In other words, if there is a debatable question that debate is not for us. But if there is whimsical action or an arbitrary ipse dixit, a legislative judgment bas not, in tbe legal sense, been exercised at all, and we will protect against tbe arbitrary action. Cf. Brae Burn, Inc., v. City of Bloomfield Hills (1957), 350 Mich 425.”
Although a municipality’s operation of a public utility may be a proprietary activity, such a municipality is engaged in a public enterprise for a public purpose. Wolgamood v. Village of Constantine (1942), 302 Mich 384, 394, 395.
Tbe charter of the city of Traverse City incorporated tbe following municipal powers by reference :2
*98“Each city may in its charter provide: *
“(3) For the exercise of all municipal powers in the management and control of municipal property and in the administration of the municipal government, whether such powers be expressly enumerated or not; for any act to advance the interests of the city, the good government and prosperity of the municipality and its inhabitants and through its regularly constituted authority to pass all laws and ordinances relating to its municipal concerns subject to the constitution and general laws of this state.” .(CL 1948, § 117.4j [Stat Ann 1949 Rev § 5.2083]).
“The council may enact such ordinances and adopt such resolutions as may be necessary for the care, protection, preservation and control of the lighting works and all the fixtures, appurtenances, apparatus, buildings and machinery connected therewith or belonging thereto, and to carry into effect the provisions of this chapter, and the powers herein conferred in respect to the erection, purchase, management and control of such works.” (CL 1948, § 107.9 [Stat Ann 1949 Rev § 5.1903]).
From the facts of this case it is clear that the Traverse City city commission carefully exercised its judgment in accordance with the authority vested in it. The need to expand the public utility facility, as proposed, satisfies the public interest required to justify the adoption of the zoning amendment. The good-faith action of a lawmaking body acting for the public welfare may not be questioned by a court. See Gray v. Grand Trunk W. R. Co. (1958), 354 Mich 1.
The enactment of ordinance amendment 102 was not unreasonable when considered in conjunction with the entire scheme of existing zoning districts. The zoning ordinance regulating the adjoining cen*99tral business district permits buildings to be erected' to a height of 125 feet. As ably phrased by the trial court, “The particular ordinance does not do violence to the zoning plan as a whole.”
Judgment affirmed; No costs, a public question being involved.
Holbrook, P. J., and J. H. Gtllis, J., concurred.“A zoning ordinance can be amended only to subserve the public interest. * * * But the determination of when the publie interest does require an amendment is within the legislative discretion of the municipality.” 8 MeQuillin, Municipal Corporations (1965 rev), § 25.68, pp 179, 180.
Chapter 1, § 3 of the charter of the city of Traverse City provides : “Further, unless otherwise provided in this charter, said city and its officers shall be vested with any and all powers, expressed and implied, which cities and their officers are, or hereafter may be, permitted to exercise or to provide for in their charters, including all powers granted to cities and officers of cities of the fourth class by Act No. 215 of the Publie Acts of 1895, as amended, and permitted to cities by Aet No. 279 of the Publie Aets of 1909, as amended, as fully and completely as though those powers were specifically *98ineorpor'ated into and provided for in this charter, and in no case shall any enumeration of particular powers in this charter be held to be exclusive.”