Illinois Administrative Code › Title 83 - PUBLIC UTILITIES › Part 460 - CERTIFICATION REQUIREMENTS AND STANDARDS OF SERVICE FOR METER SERVICE PROVIDERS › Subpart D - STANDARDS OF SERVICE › Section 460.440 - Corrections and Adjustments for Meter Error

Current through Register Vol. 48, No. 28, July 12, 2024
a)
				Regardless of the source of inaccuracy in a customer's meter usage data, the MSP
				shall correct the data and provide corrected data for all affected billing periods
				to all entities billing the customer.
b)
				Whenever any test made by an MSP or by the Commission shows a meter to have an
				average error of more than 2%, a correction of the metering data shall be determined
				by the MSP and that correction shall be conveyed within 3 business days to the
				customer and to other entities involved in billing the customer.
c) When a meter is found to have an average error
				of more than 2%, the MSP shall determine the metering data correction using the
				actual percentage of error as determined by the test, not the difference between the
				allowable error and the error found as a result of a test.
d) If the meter is found to run faster than
				allowable, the MSP shall determine the correction to the metering data for that
				meter. In determining the correction it shall be presumed, unless demonstrated
				otherwise, that the inaccuracy has existed for a period of two years. This period of
				presumed inaccuracy shall not exceed the time for which records of the current
				customer's usage exist.
e) If the meter
				is found to be slower than allowable, the MSP shall determine the correction to the
				metering data for that meter. In determining the correction, it shall be presumed,
				unless demonstrated otherwise, that the inaccuracy has existed for a period of 1
				year prior to the test for small commercial and residential customers and 2 years
				prior to the test for all other customers.
f) In the case of a non-registering meter that has
				been read during the period of non-registration, the MSP shall not determine a
				correction to metering data for estimated consumption extending over more than twice
				the regular interval between readings.
g) No corrections to metering data for meter error
				shall extend beyond the in-service date of the meter discovered to be in error, nor
				shall any correction be required to extend beyond the date upon which the current
				customer first occupied the premises at which the error is discovered.
h) Whenever an MSP or the Commission's
				representative finds that a service watt-hour meter, while in service, exhibits
				creep, the MSP shall make an estimate of the registration caused by the creep during
				the period as specified under subsection (c) and shall make a corresponding
				correction in the metering data.
i) Any
				correction to metering data made by the MSP and all records relating to the
				adjustment of the customer's billing or charges shall be retained for at least two
				years.
j) Provisions of this Subpart do
				not apply to situations in which the customer's wires, meters or other service
				equipment have been tampered with and the customer enjoyed the benefit of the
				tampering.