The following changes are being introduced with the new eMarket:
- Participants must submit a unit's Real Time High Operating Limit (RTHOL) value along with its dispatch limits as part of the schedule detail parameter data, pursuant to Market Rule III.13.6.4.1 and to Market Operation Manual M11, §2.5.3 item 27.
- Some offer parameters must be submitted at the asset level, e.g. unit offer and ARD bid parameters. They must be submitted as part of the schedule detail parameters. Specifically, the dispatch limits must be submitted as part of the schedule detail data; that is: Emergency Minimum, Economic Minimum, Economic Maximum, and Real Time High Operating limits for generators; Minimum Consumption and Maximum Consumption limits for dispatchable Asset-Related Demands (ARDs). This change is introduced to eliminate the precedence confusion that currently exists where a default value is defined at the asset-level, which can optionally be overridden with a daily value in a schedule detail, which in turn can optionally be overridden for a given market day on an hourly basis with hourly override values.
- All time values that appear in the data exchange messages and XML data files are specified using the lexical representation specified by the ISO 8601 standard, including the time zone indicator, and expressed in Eastern Standard Time. For example, with the lexical representation yyyy-mm-ddThh:mm:ss-hh:mm, 2011-02-01T11:00:00-05:00 represents 11am EST of February 2, 2011. Furthermore, all time values are formulated to represent market hour beginning rather than market hour ending. Thus the value in the example above represents the 12th hour of the market day, with 2011-02-01T00:00:00-05:00 representing the 1st hour of market day 2011 02 01.
- The maximum number of price-sensitive demand bids that can be submitted for a given hour of a market day has been increased to ten (10).
- The maximum number of Increment offers or Decrement bids that can be submitted for a given hour of a market day is now limited to fifty (50).
- New messages are defined to perform explicit deletes using web services or XML file uploads. The following explicit delete operations are defined:
- Delete an asset schedule, subject to certain restrictions
- Delete a Load Response Offer
- Delete a portfolio
Implicit delete operations are supported with submit data messages that contain either hourly or curve data by submitting a message containing an empty container element. Implicit delete operations can be performed with the following submit data messages:
- ARD Hourly Override data
- ARD Ramp Rate data
- ARD Schedule Bid data
- Unit Hourly Override data
- Unit Ramp Rate data
- Unit Schedule Bid data
- Unit Regulation Hourly data
- Demand Bid data
- The need to specify segment IDs when submitting multi-segmented curve data messages in web services or XML file upload is eliminated and the ability to delete a single segment of data is eliminated. The data can be submitted in any order and eMarket will save it in the required order. To delete a single segment, a whole new set of data without the data segment to eliminate must be submitted. Data sets that fit this curve data model are unit energy offers and ARD energy bids in schedule offer/bid messages. The same principle is applied to price-sensitive demand bids and virtual (Inc/Dec) demand bids although there is no need for eMarket to order the data submitted.
The new eMarket application is enhanced to provide more extensive validation of Participant offers and bids, in particular conflicting parameter offer/bid values. For example,
- eMarket will ensure that if a unit has a non-zero CSO value, its Economic Maximum dispatch limit is non-zero.
- eMarket will ensure that the dispatch limits are properly nested while taking into account daily offer values with hourly overrides; i.e., on an hour-by-hour basis, ensure that
0 ≤ Emergency Min ≤ Economic Min ≤ Economic Max ≤ Real Time High Operating limits. - eMarket will ensure that the startup and notification time offer values are properly nested, i.e., "Hot" times ≤ "Intermediate" times ≤ "Cold" times, and that transition times are also properly nested, i.e. Hot-to-Cold time ≥ Hot-to-Intermediate time.
- eMarket will check that when a unit is flagged as Must Run for an hour, it is not flagged Unavailable for a subsequent hour before its Minimum Run Time is elapsed, and conversely when a unit is flagged as Unavailable for an hour, it is not flagged as Must Run for a subsequent hour before its Minimum Down Time is elapsed. A warning will be returned to the user if either of the rules is violated.
- eMarket will perform various checks of the Maximum Daily Energy value when one is submitted for a unit and the unit is self-scheduled for any interval of time during the market day. A warning will be returned to the user if any of the rules is violated.

