The time in which an electricity deliverer must provide the information requested under subsection (b) may be extended by an agreement between the municipality and the electricity deliverer. If an electricity deliverer receives, during a single month, information requests from more than 2 municipalities, or the aggregate population of the requesting municipalities is 100,000 customers or more, the electricity deliverer is entitled to an additional 30 days to respond to those requests.
35 ILCS 645/5-10