If we're unable to get an actual read of your meter, we'll send you an estimated bill. This may be because the meter is behind a locked gate, protected by guard dogs or it was otherwise inaccessible.
Estimated bills are based on past energy usage which takes into account seasonal factors. When historical usage information isn't available, estimates will be based on the average energy usage of similar customers in the geographic region over the same period.
If you've received an estimated bill, your next actual meter-read bill will correct any discrepancy in your usage and what you've paid for on your estimated bill. This may mean that your next bill will be more or less expensive than expected.
You can find out if your bill is estimated by looking for 'Reading Type' or 'Current Reading' on page 2 of your bill.