In some cases, meter readings are estimated, and "Estimated Statement" is printed on the customer's bill.
In these cases, the billing system will estimate a customer's usage based on the length of the billing cycle, previous usage for corresponding billing periods, and PUD staff may make adjustments based on other factors and weather conditions.
If an estimated bill is issued, any difference between estimated and actual usage will automatically be corrected on the next bill when an actual read is obtained.