220 ILCS 5/16-103.1
An electric utility that serves at least 2,000,000 customers must provide tariffed service to Unit Owners' Associations, as defined by Section 2 of the Condominium Property Act, for condominium properties that are not restricted to nonresidential use at rates that do not exceed on average the rates offered to residential customers on an annual basis. Within 10 days after the effective date of this amendatory Act, the electric utility shall provide the tariffed service to Unit Owners' Associations required by this Section and shall reinstate any residential all-electric discount applicable to any Unit Owners' Association that received such a discount on December 31, 2006. For purposes of this Section, "residential customers" means those retail customers of an electric utility that receive (i) electric utility service for household purposes distributed to a dwelling of 2 or fewer units that is billed under a residential rate or (ii) electric utility service for household purposes distributed to a dwelling unit or units that is billed under a residential rate and is registered by a separate meter for each dwelling unit.
220 ILCS 5/16-103.1