Section 729.5 Of Article 2. Rates From California Public Utilities Code >> Division 1. >> Part 1. >> Chapter 4. >> Article 2.

. A public utility, other than one-way radio paging services, shall not change a group of customers from one rate schedule to another rate schedule, if the change would result in an increase of more than 10 percent in the rate charged to the affected customers, without first notifying customers of the change. Upon the request of an affected customer, the commission may hold a hearing on the change.