Costs-The total amount of expenses, or class of expenses incurred, which is the basis of the automatic adjustment clause.
Over collection-The amount equal to revenues received under an automatic adjustment clause which exceeds the amount of costs incurred.
Revenue-The total proceeds received under the automatic adjustment clause.
Under collection-The amount equal to costs incurred under an automatic adjustment clause which exceeds the amount of revenues received.
52 Pa. Code § 54.190
This section cited in 52 Pa. Code § 54.187 (relating to default service rate design and the recovery of reasonable costs).