Current Year Rate Data

Historical Rate Data

If you have any questions, please contact Sheila Cook, Rates Manager,

970-447-6345 or scook​@wapa.gov

LAP Transmission and LAP, CRSP & WACM BA Ancillary Services Rates

Effective Oct 1, 2025-March 31, 2026

** On April 1, 2026, RMR became a member of SPP.  Subsequently, the formula rates for transmission and ancillary services under Rate Schedules L-NT1, L-FPT1, L-NFPT1, L-NFJDT, L-UU1, L-AS1, L-AS2, L-AS3, L-AS4, L-AS5, L-AS6, L-AS7, and L-AS9 were superseded by  LAPT-ATRR, LAPT-DCTIE-IMEU and LAPT-AS1 and are no longer applicable. **

Current LAPT-ATRR, LAPT-DCTIE-IMEU and LAPT-AS1 Rate Schedules and more can be found at https://www.oasis.oati.com/LAPT/index.html.  Navigate to the “RATES” folder on the left-hand side of the screen.

​** For current year rate data and historical data, please see the appropriate section to the left **

Oct 1, 2025-March 31, 2026 Transmission Rates​
Network Integration Transmission Service – L-NT1 (Attachment H to OATT) $84,976,253
Firm Transmission Service – L-FPT1 (Schedule 7 to OATT) $3.96/kW-month
Non-Firm Transmission Service – L-NFPT1 (Schedule 8 to OATT) 5.43 mills/kWh / $3.96/kW-month
​Non-Firm Joint Dispatch Transmission Service – L-NFJDT (Schedule 8R to OATT Attachment R)
(For the Western Energy Imbalance Service Market WEIS) 		​$0.00/MWh
Unreserved Use Penalties – L-UU1 (Schedule 10 to OATT) ​​200% of LAP’s Firm Point-to-Point rate
WestConnect Regional Non-Firm Transmission Service – WC-8 $11.43 MWh On-Peak / $10.34 MWh Off-Peak
​​LAP Transmission System Load 1,786,192 kW
Oct 1, 2025-March 31, 2026 Ancillary Services Rates​​
Scheduling/Dispatch Service – L-AS1 (Schedule 1 to OATT) $20.68/schedule/day
​​Reactive Supply & Voltage Control – L-AS2 (Schedule 2 to OATT) $0.109/kW-month
​Regulation and Frequency Response – L-AS3 (Schedule 3 to OATT) Wind Capacity Multiplier Solar Capacity Multiplier​ $0.477/kW-month
Wind multiplier: 157% / Solar multiplier: 221%
Energy Imbalance – L-AS4​ (CRCM SP-EI6) (Schedule 4R to OATT Attachment R)
(Within the Western Energy Imbalance Service Market (WEIS) Footprint) 		Charges shall reflect the pass-through of all the applicable charges/credits associated with the WEIS Tariff assessed to RMR for embedded load in the WACM BAA of such entity that does not make adequate alternate arrangements in the WEIS Market to satisfy its Energy Imbalance Service obligation. RMR will also charge an administrative fee to cover RMR’s cost of administering this service on behalf of such entities. *see rate schedule for additional details
Link to Administrative Fee​s
Generator Imbalance – L-AS9​ (CRCM SP-EI6)
(Schedule 9R and OATT Attachment R)
(Within the Western Energy Imbalance Service Market (WEIS) Footprint) 		Charges shall reflect the pass-through of all the applicable charges/credits associated with the WEIS Tariff assessed to RMR for embedded load in the WACM BAA of such entity that does not make adequate alternate arrangements in the WEIS Market to satisfy its Energy Imbalance Service obligation. RMR will also charge an administrative fee to cover RMR’s cost of administering this service on behalf of such entities. *see rate schedule for additional details
Link to Administrative Fee​s
​Spinning Reserves – L-AS5​ (CRCM SP-SSR6)
(Schedule 5 to OATT) 		​Pass Through (purchase price, energy activation, plus administrative fee)
Link to Administrative Fee​s
Supplemental Reserves – L-AS6​ (CRCM SP-SSR6)
(Schedule 6 to OATT) 		​Pass Through (purchase price, energy activation, plus administrative fee)
Link to Administrative Fee​s
Oct 1, 2025-March 31, 2026 WACM Service
Balancing Authority Real Power Losses – L-AS7 2.50% - Using WIES Market's hourly locational marginal price (LMP) for the LAP settlement location. **See rate schedule for additional details. Link to Loss Study (PDF) [oasis.oati.com]

Last modified on May 11th, 2026