Regardless of the number of service points on an account, an Ameren delivery services bill and/or the corresponding EDI810 and EDI867 transactions are always produced together when the account bills. However, the service points that make up the account may have slightly different billing periods since service points bill independently of each other. For example, a DS5 lighting service point often bills on the first day of the four business day Ameren billing window. However, DS1, DS2, DS3, and DS4 service points may or may not bill on the first day of the Ameren billing window.
EDI 867M transactions are created per service point. So, if an account has one electric service point, then only one EDI 867M will be produced each time that the account bills. If an account has a DS2 service point as well as a DS5 (lighting) service point, then two EDI 867M transactions will be produced each time the account bills. Note that the number of meters associated with a service point has no impact on the number of EDI 867M transactions that are produced.
There are a relatively small number of Ameren Illinois accounts that have one or more subtractive meters on them. The designation in the EDI 867 that a meter’s usage is subtractive can be found on the REF segment when element one is “JH” and element two is “S” (the “S” stands for “Subtractive”). Thus, a subtractive meter is denoted in the EDI 867 transaction as follows: REF*JH*S.<br><br>
Conversely, a typical non-subtractive meter is noted as REF*JH*A in the EDI 867 transaction (where the “A” stands for “Additive”).
A RES can change the billing option for an account via the EDI 814C transaction. The billing option change will always be effectuated for the billing period after the date requested in the EDI 814C transaction.
On the spring forward day, the interval meter data in the EDI 867 will only contain 23 values, with no interval read for hour ending 3:00. For this date the hourly readings will be for hours ending 1:00, 2:00, 4:00, …<br><br>
On the fall back day, the interval meter data in the EDI 867 will contain 25 values, with two interval reads for hour ending 2:00. For this date the hourly readings will be for hours ending 1:00, 2:00, 2:00, 3:00, …
For most interval metered accounts, reads are taken at the end of each hour, and 15, 30, and 45 minutes after each hour. However, Ameren does not provide 15 minute interval data in the EDI 867 transaction. Instead, Ameren provides hourly interval data in the EDI 867. Since a billing period can end in-between hours, Ameren accounts for this by showing that hour twice – once in two separate EDI 867 transactions.<br><br>
The first time that the hour is shown is as the final hour of a billing period. The usage will not represent a full hours’ worth of data, but will instead represent the usage up through when the read was taken. For example, if the final read for a billing period was taken at 14:30, the usage shown in the EDI 867 for hour ending 15:00 will only be for the first 30 minutes of the hour.<br><br>
The second time that the hour is shown is as the first hour in the EDI 867 for the next billing period. The usage will not represent a full hours’ worth of data, but will instead represent the usage from the time of the end read of the previous billing period through the end of that hour. For example, if the last read from the previous billing period was taken at 14:30, the usage shown in the EDI 867 for hour ending 15:00 will only be for the final 30 minutes of the hour.
EDI, EDI 867M transactions, subtractive meter,