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Federal Register / Vol. 86, No. 165 / Monday, August 30, 2021 / Notices based assessment methodology described above.
Alternative Arrangements Exporting Intermittent Resource Requirement: An entity that exports the output from an intermittent generator to another BA Area will be required to dynamically meter or dynamically schedule that resource out of WALC to another BA unless arrangements, satisfactory to WALC, are made for that entity to acquire this service from a third-party or self-supply as outlined below. An intermittent generator is one whose output is volatile and variable due to factors beyond direct operational control and, therefore, is not dispatchable.
Selfor Third-party Supply: WALC
may allow an entity to supply some or all of its required regulation, or contract with a third party. This entity must have revenue quality metering at every load and generation point, with accuracy as defined by NERC, to include MW flow data availability at 6-second or smaller intervals. WALC will evaluate the entitys metering, telecommunications and regulating resource, as well as the required level of regulation, to determine whether the entity qualifies to self-supply under this provision. If approved, the entity is required to enter into a separate agreement with WALC
which will specify the terms of selfsupply.
Customer Accommodation For entities unwilling to take Regulation Service, self-provide as described above, or obtain the service from a third party, WALC will assist the entity in dynamically metering its loads/resources to another BA. Until such time as meter configuration is accomplished, the entity will be responsible for charges assessed under this schedule.
Rate Schedule DSWEI4
SCHEDULE 4 to OATT
Supersedes Rate Schedule DSWEI3
dated October 1, 2016, Through September 30, 2021
United States Department of Energy
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Western Area Power Administration Desert Southwest Region and Western Area Lower Colorado Balancing Authority Energy Imbalance Service Approved Under Rate Order No.
WAPA175
Effective The first day of the first full billing period beginning on or after October 1,
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2016, and extending through September 30, 2021, or until superseded by another rate schedule, whichever occurs earlier.
Note: This rate schedule was extended by Rate Order No. WAPA200 through September 30, 2026.
Applicable Energy Imbalance Service is provided when there is a difference between the scheduled and actual delivery of energy to a load located within a Balancing Authority Area BA Area over a single hour. The Transmission Service Provider TSP or the Balancing Authority BA who performs this function for the TSP must offer this service when transmission is used to serve load within its BA Area.
The Western Area Lower Colorado Balancing Authority WALC performs this function for the Federal TSP.
Customers of a Federal TSP must purchase this service from WALC or make alternative comparable arrangements to satisfy their Energy Imbalance obligations. Non-Federal TSPs must have separate agreements with WALC that specify the terms of Energy Imbalance Service. WALC may charge a transmission customer for either energy imbalances under this schedule or generator imbalances under Schedule 9 for imbalances occurring during the same hour, but not both unless the imbalances aggravate rather than offset each other.
Formula Rate Charges for energy imbalances are based on the deviation bands as follows:
1. For deviations within 1.5 percent with a minimum of 4 MW of the metered load, the settlement for on-peak and off-peak hours is 100 percent.
2. For deviations greater than 1.5 up to 7.5 percent or greater than 4 MW up to 10 MW of the metered load, the settlement for on-peak hours is 110
percent for under-delivery and 90
percent for over-delivery, and the settlement for off-peak hours is 110
percent for under-delivery and 75
percent for over-delivery.
3. For deviations greater than 7.5
percent or 10 MW of the metered load, the settlement for on-peak hours is 125
percent for under-delivery and 75
percent for over-delivery, and the settlement for off-peak hours is 125
percent for under-delivery and 60
percent for over-delivery.
The deviation bands will be applied hourly and any energy imbalances that occur as a result of the transmission customers scheduled transactions will be netted on a monthly basis and settled financially at the end of the month. For purposes of this schedule, the proxy
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prices used to determine financial settlement will be derived from the Palo Verde electricity price indexes, or similar alternative, for on-peak and offpeak. WALC may accept settlement in energy in lieu of financial settlement.
During periods of BA operating constraints, WALC reserves the right to eliminate credits for over-delivery. The cost to WALC of any penalty assessed by a regulatory authority due to a violation of operating standards resulting from under or over-delivery of energy may be passed through to customers.
Rate Schedule DSWSPR4
SCHEDULE 5 to OATT
Supersedes Rate Schedule DSWSPR3
dated October 1, 2016, Through September 30, 2021
United States Department of Energy Western Area Power Administration Desert Southwest Region and Western Area Lower Colorado Balancing Authority Operating ReserveSpinning Reserve Service Approved Under Rate Order No.
WAPA175
Effective The first day of the first full billing period beginning on or after October 1, 2016, and extending through September 30, 2021, or until superseded by another rate schedule, whichever occurs earlier.
Note: This rate schedule was extended by Rate Order No. WAPA200 through September 30, 2026.
Applicable Spinning Reserve Service is needed to serve load immediately in the event of a system contingency and may be provided by generating units that are on-line and loaded at less than maximum output. The Transmission Service Provider TSP or the Balancing Authority BA who performs this function for the TSP must offer this service when transmission is used to serve load within its BA Area.
The Western Area Lower Colorado Balancing Authority WALC performs this function for the Federal TSP.
Customers of a Federal TSP must purchase this service from WALC or make alternative arrangements to satisfy their Spinning Reserve obligations.
Formula Rate
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