(a) An electric utility shall continue offering to retail customers each tariffed service that it offered as a distinct and identifiable service on the effective date of this amendatory Act of 1997 until the service is (i) declared competitive pursuant to Section 16-113, or (ii) abandoned pursuant to Section 8-508. Nothing in this subsection shall be construed as limiting an electric utility’s right to propose, or the Commission’s power to approve, allow or order modifications in the rates, terms and conditions for such services pursuant to Article IX or Section 16-111 of this Act.
     (b) An electric utility shall also offer, as tariffed services, delivery services in accordance with this Article, the power purchase options described in Section 16-110 and real-time pricing as provided in Section 16-107.
     (c) Notwithstanding any other provision of this Article, each electric utility shall continue offering to all residential customers and to all small commercial retail customers in its service area, as a tariffed service, bundled electric power and energy delivered to the customer’s premises consistent with the bundled utility service provided by the electric utility on the effective date of this amendatory Act of 1997. Upon declaration of the provision of electric power and energy as competitive, the electric utility shall continue to offer to such customers, as a tariffed service, bundled service options at rates which reflect recovery of all cost components for providing the service. For those components of the service which have been declared competitive, cost shall be the market based prices. Market based prices as referred to herein shall mean, for electric power and energy, either (i) those prices for electric power and energy determined as provided in Section 16-112, or (ii) the electric utility’s cost of obtaining the electric power and energy at wholesale through a competitive bidding or other arms-length acquisition process.
     (d) Any residential or small commercial retail customer which elects delivery services is entitled to return to the electric utility’s bundled utility tariffed service offering provided in accordance with subsection (c) of this Section upon payment of a reasonable administrative fee which shall be set forth in the tariff. Notwithstanding any other obligation of an electric utility in this Section: (1) if the residential or small commercial customer has not elected delivery services within 2 billing cycles after returning to the electric utility’s bundled utility tariffed service offering, then the electric utility shall be entitled, but not required, to impose the condition that such customer may not elect delivery services for up to 12 months after the date on which the customer returned to bundled utility tariffed service and (2) the electric utility shall be entitled, but not required, to impose the condition that a customer who has left delivery service for the electric utility’s bundled service not be permitted to return to the same alternative retail electric supplier within up to 2 billing cycles after the customer returned to bundled utility tariffed service other than in situations, including, but not limited to, where the return was in error, inadvertent, or the result of any other unintended operational consequence.
     (e) The Commission shall not require an electric utility to offer any tariffed service other than the services required by this Section, and shall not require an electric utility to offer any competitive service.