DST is observed by CAISO, ERCOT, ISONE, NYISO, PJM, and SPP.
XML Submissions
- CAISO/ERCOT
- 'FromInterval' scheduling is used and intervals have to be listed sequentially.
- Daylight Savings Time (DST) Submissions, from the APX ISO Scheduling API Specification: For the “Long Day” (Daylight-to-Standard time transition in the Fall) with 25 hours, the additional hour should be referenced as Interval 3 (for a submission with the first interval beginning at midnight).
|
Hourly Interval Submissions, ”Long Day” |
|
|
APX FromInterval |
ISO Hour Ending |
|
1 |
01:00 |
|
2 |
02:00 |
|
3 |
02:00* |
|
4 |
03:00 |
|
…............................................................................................................ |
|
|
24 |
23:00 |
|
25 |
24:00 |
- ISONE, NYISO, PJM and SPP
- Since GMT scheduling is used by these ISOs, there are no DST issues.
CSV Submissions
- All ISOs
- For all ISO regions alike, HE scheduling is used, so 2x is used for the duplicate hour.
- Daylight Savings Time (DST) Submissions:
Column Name
Data Type
Description
Required
Hour
string
Hour of the day, in “Hour Ending” (1-24). Use “2x” for the duplicate hour on the Daylight Saving Time long day
Y