What are the criteria for getting charged a Capacity Replacement Non-Compliance Charge (CRNCC)?
- Any combination of cleared or replaced ZRCs that are on full or partial Generator Planned Outage for greater than thirty-one (31) days in total during a season.
- Or for any reason for full or partial Generation Outages that were not planned but were known and could have been reasonably anticipated at the time of the PRA.
- Or unavailable because subject to a Diversity Contract that is not available for greater than one (1) month during a season.
Where will the charges be applied?
The charges will be applied to the originally cleared Resource.
What are the Generation Outage Priorities?
Planned – Equipment is known to be operable with little risk of a forced outage. Required for preventive maintenance, for troubleshooting, or repairs that are not viewed as urgent work. Equipment capacity upgrades, equipment additions or replacement due to obsolescence. This includes periodic overhauls of generation equipment.
Urgent – Equipment is still operable but carries an increased risk of forced outage or equipment loss. The equipment remains in service until maintenance crews are ready to perform the work.
Emergency – Equipment is removed from service by the Operator, as soon as possible because of safety concerns or increased risk to the grid.
Forced – Equipment is relayed out of service.
What CROW outages are looked at in calculating CRNCC?
MISO will use CROW outages prioritized as Planned. Also, all outages not prioritized as Planned, but that were:
- Known or reasonably known at the time of the PRA.
-Were determined by the IMM to be incorrectly prioritized in CROW shall be included.
What are the requirements for submitting a Generator outage schedule?
Either the Generator owner or Operator must submit maintenance outage scheduled for all generation facilities 10 MW and above to MISO for a minimum of 24-month period. 36 months if it’s a nuclear Generator and must be updated daily.
Should Wind Generator Resources with less than 10MW at their facilities submit outage schedules? Yes, these resources are requested to submit outage schedules. These are utilized to improve wind resource forecast accuracy.
What are the Generation Equipment Request Types?
Out of Service – Equipment is out of service.
Deration – Units that are online and available but with limited total output.
Economy – Units that are offline for economic reasons but available if needed.
What are the requirements for reporting economy outages?
- Outage must be entered as an economy equipment request type as soon as the condition it identified.
- The planned start and estimated end times must be entered.
- The requestor notes must indicate that the unit is offline but available.
- The recall time must indicate the time needed to bring he unit online.
When do you submit a derate outage?
Derate outages should be submitted when the available output is below the machine’s capability. Individual outages for each machine must be submitted unless modeled otherwise in MISO’s Energy Management System (EMS). Regarding intermittent resources (including wind generation), derate information is not required for individual wind turbines, but determined on the total capability at the point of injection into the transmission system of CPNode.
All the resources need to submit outages if they meet derate threshold or if it is below Module E must offer requirements (Whichever is restrictive)
If after the derate, unit availability is higher than their Must offer requirement AND doesn’t meet threshold, CROW outage card is not needed.
Are derates required when the wind is not blowing?
No, you do not need to submit derates if the wind is not blowing, but it is required when the resources or portion of the resource is not available.
What is a derate threshold?
If a machine’s seasonal capability is reduced (greater than or equal to 10% or greater than 5MW or equal than or equal to 50MW) a derate outage submission is required.
Can a derate threshold be applied to determine if a reduction qualifies for an outage submission?
Yes, a derate threshold may be applied to determine if a reduction qualifies.
Do I need to submit incremental hours for derates?
No, largest hourly reduction per operating day may be submitted.
How should a derate be entered to reflect ambient temperature impacts?
You need to submit a CROW ticket for any derate below your must offer requirement. Ambient condition adjustments were made to your seasonally corrected generation verification test capacity (GVTC). If your offer is below your seasonally corrected GVTC, you must enter a derate. Ambient derates should be prioritized as Urgent.
How should derates be entered due to transmission outages that require a generator to de-rate?
A generation derate must be submitted in accordance with MISO's guidelines regardless of what is limiting the resource (e.g. deliverability or availability). Cause Code needs to be 126 Transmission System Limitation. If coded 126, the resource will have a Tier 2 Exemption for Schedule 53 calculation during that time-period and the outage will not count towards CRNCC. Cause-code 126 requires linkage to an existing transmission ticket. Outage code 126 is available for all outage priorities. Outage tickets should be prioritized per the rules in BPM-008 Section 4.6. Transmission outages scheduled after the PRA would not be subject to the CRNCC.
If I have a forced outage, when should I report this to MISO?
This report must be made as soon as possible after the occurrence of the outage and within 30 minutes of the outage.
Do I need to submit a schedule for the forced outage?
Yes, you must develop an associated schedule for the outage and submit the schedule as a forced outage to MISO. This must include an estimated end time and must be updated periodically if necessary. This must be done as soon as possible and within 30 minutes of the event.
Can a unit have overlapping outages Out of Service (OOS) versus Derate?
Yes, a unit can have an overlapping unplanned and planned outages on the same unit for the same time period. In this scenario the unit is offline for the duration of the Out of Service ticket and derated for the other time. You cannot have for example two Out of Service outages overlapping or two derate outages overlapping for the same machine.
How do I submit multiple derates on the same unit?
1) Add your unit to the blank outage ticket.
2) Set the planned start, planned end, priority, outage cause, then set the derate value, then change continuous to noncontinuous.
3) Navigate to the Outage Details/Approval tab.
4) By clicking the Add button in the bottom right a user can add as many additional time periods as necessary for the outage and change the derated to value for each period.
How do I submit unplanned derates on top of a planned derate?
Update your planned derate ticket to complete a minute prior to when the unplanned derate starts. Then when the unplanned derate completes submit a planned derate to start one minute later.
How do I change “default” derate settings from “planned”?
There is no default derate priority setting, priority is set for each individual outage.
Are derate outages in CROW auto approved?
Yes, these are auto approved.
Can I perform ZRC replacement for resources on forced outage?
No, you cannot replace ZRCs for resources on Forced Outages other than for Catastrophic Outages. ZRC replacement can only be used for limited reasons, one being resources on Planned outages at risk of going over 31 days in a season per Module E-1 of the Tariff and BPM-011-r29.
If I have a resource on planned outages or derates for greater than 31 days, how many ZRCs do I need to replace?
For derates, the Must offer obligation in ICAP terms must be met without considering the threshold, to protect against any CRNCC charged. For OOS resources 95%+ needs to be replaced for the resource to not have a Resource Adequacy Requirement (RAR)
What if we want to replace ZRCs for a portion of the season but are getting them from another MP?
You can do ZRC replacement with any uncleared ZRCs in your account, or you can get them from other MPs. The ZRC transactions and ZRC replacement are by default for the rest of the season, but you can also follow the steps below to have it be for only part of the season.
- An MP could transfer ZRCs to the other MP (they would be for the remainder of the season from the transfer time).
- The other MP could use the ZRCs as replacement with an effective date.
- The other MP could select and identify a termination date for the ZRC replacement.
- After the ZRC replacement is terminated, the ZRCs will be reinstated to the other MP.
- The other MP could do a ZRC transaction back to the original MP (reverse of step 1)
How do I find more information on ZRC transactions and replacement?
MECT User guide: https://cdn.misoenergy.org/MECT%20User%20Guide91551.pdf
ZRC Replacement presentation: https://cdn.misoenergy.org/20230524%20RASC%20Item%2004b%20ZRC%20Replacement628921.pdf