65 ILCS 5/11-80-5

The corporate authorities of each municipality, with the concurrence of two-thirds of all of the alderpersons, trustees or commissioners elected therein, may levy and collect annually, in addition to all other taxes now authorized by law, a tax of not to exceed .05% of the value, as equalized or assessed by the Department of Revenue, of the taxable property in the municipality, to be used exclusively for the purpose of lighting streets. The tax authorized by this Section is in addition to taxes for general corporate purposes authorized by Section 8-3-1.

The foregoing tax rate limitation, insofar as it is applicable to municipalities of less than 500,000 population, may be increased or decreased under the referendum provisions of the General Revenue Law of Illinois.