65 ILCS 5/11-119-1
Every city or village owning and operating its electric light plant and system or its gas plant and system, may pay for improving, enlarging or extending the plant and system by the issuance and sale of revenue bonds. These bonds shall bear interest at a rate of not to exceed the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, payable semi-annually, and shall mature within the period of usefulness of the project for which they are issued, such period of usefulness to be determined by the corporate authorities, but in no event more than 30 years from the date of completion of the project. The bonds shall be sold in such manner as the corporate authorities shall determine, except that if issued to bear interest at the rate of 7% annually, the bonds shall be sold for not less than par and accrued interest, and except that the selling price of bonds bearing less than 7% interest shall be such that the interest cost to the municipality of the money received from the sale of such bonds, shall not exceed 7% annually, computed to maturity according to standard tables of bond values.
With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.
The amendatory Acts of 1971, 1972 and 1973 are not a limit upon any municipality which is a home rule unit.
65 ILCS 5/11-119-1