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How should the utility bill a customer when there is a discrepancy between the base meter and the remote register?

Wisconsin Administrative Code § PSC 185.34 provides the procedures for determining backbills (or refunds) for customers when there is a discrepancy between the base meter and ROM. This code section, listed below, is fairly complex. The following pdf document includes a flow chart, definitions of terms, and examples to assist in understanding the procedures for determining backbills (or refunds). If you have questions, please contact David Prochaska at (608) 266-5739 or by e-mail at David.Prochaska@wisconsin.gov.

pdf document (40 kb) Flow chart, definitions of terms, and examples to assist in understanding the procedures for determining backbills (or refunds)

PSC 185.34 Adjustment of bills (ROM). 
(1) STOPPED ROM.  A stopped ROM is defined as one that has recorded zero consumption during the last meter reading period.  The consumption that was measured by the base meter and not recorded by the remote register shall be backbilled as current consumption.  The usage backbilled as current consumption shall not exceed the customer's average usage per billing period based on the latest 12-months usage.  Any amount greater than this usage shall be backbilled pursuant to sub (2).
 
(2) STOPPED AND UNDER-REGISTERING ROM.  Unrecorded ROM consumption (base meter reading less ROM reading) resulting from sub (1) or an under-registering ROM shall be prorated from the date of the last base meter reading.  Pursuant to s. 196.635, Stats., the utility may backbill for prorated amounts associated with the last 24 months.
 
(3) OVER-REGISTERING ROM.  A ROM over registration ( OM reading less base meter reading) shall be prorated from the date of the last base meter reading.  The utility shall refund prorated amounts associated with the period since the meter was installed or last tested, not to exceed the last 6 years.
 

History:  Cr. Register, January, 1997, No. 493, eff. 2-1-97.