ER27-432-000 · 2026-11-06 · Southwest Power Pool, Inc.

Clean8536-7e21cab7-1b8e-4b1a-925e-3a1d8da6d4fc.pdf

PDF page 1

SCHEDULE 15
CONDITIONAL HIGH IMPACT LARGE LOAD SERVICE
For each Point of Delivery of the Conditional High Impact Large Load Service
(“CHILLS”), the Transmission Customer and Network Customer must compensate the
Transmission Provider for the CHILLS up to the monthly sum of the applicable charges set forth
below in addition to other applicable charges specified in the Tariff. All effective rates under this
schedule will be posted in the Revenue Requirements and Rates File (“RRR File”) on the SPP
website.

1.
Zonal Rates per Kilowatt: The Transmission Customer and Network Customer
must pay the zonal rate (per kilowatt) based upon the Zone where the load is located for the
CHILLS. The zonal rate will be the hourly rate applicable to Non-Firm Point-To-Point
Transmission Service for the specific on-peak or off-peak hour of the CHILLS usage. For each
hour without Curtailment, the hourly charge will be calculated using kilowatts of the CHILLS
Reserved Capacity. For each hour with Curtailment, the hourly charge will be calculated using
the Curtailment kilowatt limit specified by the Transmission Provider. CHILLS load exceeding
the Curtailment limit specified by the Transmission Provider or the CHILLS Reserved Capacity is
subject to additional charges and penalties pursuant to Part VII, Section 44.4 of this Tariff.

The Zones are as follows:
Zone 1: American Electric Power – West
Zone 2: Kansas City Board of Public Utilities
Zone 3: City Utilities of Springfield, Missouri
Zone 4: Empire District Electric Company
Zone 5: Grand River Dam Authority
Zone 6: Evergy Metro, Inc.
Zone 7: Oklahoma Gas & Electric Company
Zone 8: Midwest Energy, Inc.
Zone 9: Evergy Missouri West, Inc.
Zone 10: Southwestern Power Administration
Zone 11: Southwestern Public Service
Zone 12: Sunflower Electric Power Corporation
Zone 13: Western Farmers Electric Cooperative

PDF page 2

Zone 14: Evergy Kansas Central, Inc. (Evergy Kansas Central, Inc. and Evergy Kansas South,
Inc.)
Zone 15: Reserved for Future Use
Zone 16: Lincoln Electric System
Zone 17: Nebraska Public Power District
Zone 18: Omaha Public Power District
Zone 19: Upper Missouri Zone
Zone 100: Colorado Springs Utilities
Zone 101: Platte River Power Authority
Zone 102: Tri-State G&T Association – West
Zone 103: Colorado River Storage Project Zone
Zone 104: Loveland Area Projects Zone
No changes in Zones will be made without submitting a filing to the Commission.

2.
Caps: The total demand charge in any month for usage up to the CHILLS Reserved
Capacity will not exceed the monthly rate times the amount in kilowatts of CHILLS Reserved
Capacity in such month.

3.
Redispatch Costs: The redispatch costs will be calculated in accordance with the
formula and protocols shown in Attachment K.

4.
Discounts: The Transmission Provider may offer discounts under this
Schedule. Three principal requirements apply to discounts for transmission service as
follows: (1) any offer of a discount made by the Transmission Provider must be announced to all
Eligible Customers solely by posting on the OASIS, (2) any customer-initiated requests for
discounts must occur solely by posting on the OASIS, and (3) once a discount is negotiated, details
must be immediately posted on the OASIS. For any discount agreed upon for service to a Point(s)
of Delivery, the Transmission Provider must offer the same discounted CHILLS rate for the same
time period to all Eligible Customers on all unconstrained transmission paths that go to the same
Point(s) of Delivery on the Transmission System. In offering discounts, the Transmission
Provider’s goal will be to maximize transmission revenues.

5.
Real Power Losses: The Transmission Customer and Network Customer will be
responsible for real power losses determined in accordance with Attachment M and Part VII,
Section 45.4 of this Tariff.

PDF page 3

6. 
Wholesale Distribution Service: Where Wholesale Distribution Service is 
provided to effectuate CHILLS, the Transmission Customer and Network Customer must pay all 
charges levied pursuant to the Wholesale Distribution Service Agreement and Schedule 10. 
 
7.  
Base Plan Zonal Charges, Subregional Charge, and Region-wide Charges: The 
Transmission Customer and Network Customer must pay the applicable Schedule 11 zonal rate 
(per kilowatt) based upon the Zone where the load is located, the applicable Schedule 11 
Subregional Charge (per kilowatt) based upon the Subregion where the load is located, and the 
applicable Schedule 11 region-wide rate for CHILLS. The rates will be the applicable point-to-
point hourly rates for the specific on-peak or off-peak hour of CHILLS usage.  The hourly charges 
will be calculated using hourly kilowatts as stated in Section 1 of Schedule 15. The total Schedule 
11 zonal charge in any month for usage up to the CHILLS Reserved Capacity will not exceed the 
Schedule 11 point-to-point zonal monthly rate times the amount in kilowatts of CHILLS Reserved 
Capacity in such month. The total Schedule 11 region-wide charge in any month for usage up to 
the CHILLS Reserved Capacity will not exceed the Schedule 11 point-to-point region-wide rate 
times the amount of kilowatts of CHILLS Reserved Capacity in such month.  
 
8.  
Resales: Resales are not permissible for CHILLS.

PDF page 4

Colorado Springs Utilities
Rate Sheet for Point-To-Point Transmission Service

The currently effective rates for Point-To-Point Transmission Service in the Colorado
Spring Utilities (“CSU”) rate Zone are set forth in the “CSU PTP Rate Att T” tab of the Revenue
Requirements and Rates File (“RRR File”) posted on the SPP website.

Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue
Requirement in accordance with Section IV.A of Attachment J. The rates, including any
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website.

Point-To-Point Transmission Service and Conditional High Impact Large Load Service
Revenue Crediting for Point-To-Point Rates
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any
adjustments for Schedule 7 and 8 revenues, and Schedule 15 revenues, implemented in accordance
with Section 34.1(2) of this Tariff. The rates, including any applicable adjustments for Schedule
7 and 8 revenues, and Schedule 15 revenues, shall be set forth in the RRR File.

Firm Point-To-Point Transmission Service
The Transmission Customer shall compensate the Transmission Provider each month for
Reserved Capacity at the sum of the applicable charges set forth in the RRR File, calculated
pursuant to the CSU formula rate shown in Attachment H, Addendum 54 and described below:
1.
Yearly delivery: one-twelfth of the rate per MW of Reserved Capacity per year.
2.
Monthly delivery: rate per MW of Reserved Capacity per month.
3.
Weekly delivery: rate per MW of Reserved Capacity per week.
4.
Daily on-peak delivery: rate per MW of Reserved Capacity per day.
5.
Daily off-peak delivery: rate per MW of Reserved Capacity per day.

PDF page 5

The total demand charge in any week, pursuant to a reservation for Daily delivery, shall
not exceed the rate specified for Weekly delivery multiplied by the highest amount in megawatts
of Reserved Capacity in any day during such week.

Non-Firm Point-To-Point Transmission Service
The Transmission Customer shall compensate the Transmission Provider for Non-Firm
Point-To-Point Transmission Service up to the sum of the applicable charges set forth in the RRR
File, calculated pursuant to the CSU formula rate shown in Attachment H, Addendum 54 and
described below:
1.
Monthly delivery: rate per MW of Reserved Capacity per month.
2.
Weekly delivery: rate per MW of Reserved Capacity per week.
3.
Daily on-peak delivery: rate per MW of Reserved Capacity per day.
4.
Daily off-peak delivery: rate per MW of Reserved Capacity per day.
5.
Hourly on-peak delivery: rate per MW of Reserved Capacity per hour.
6.
Hourly off-peak delivery: rate per MW of Reserved Capacity per hour.
The total demand charge in any day, pursuant to a reservation for Hourly delivery, shall
not exceed the rate specified for Daily on-peak delivery multiplied by the highest amount in
megawatts of Reserved Capacity in any hour during such day. In addition, the total demand charge
in any week, pursuant to a reservation for Hourly or Daily delivery, shall not exceed the rate
specified for Weekly delivery multiplied by the highest amount in megawatts of Reserved Capacity
in any hour during such week.

PDF page 6

Loveland Area Projects 
Rate Sheet for Point-To-Point Transmission Service 
 
 
The currently effective rates for Point-To-Point Transmission Service in the Loveland Area 
Projects (“LAP”) rate Zone are set forth in the “LAP PTP Rate Att T” tab of the Revenue 
Requirements and Rates File (“RRR File”) posted on the SPP website.  Transmission Owners(s) 
that have Commission approved rate(s) in the LAP rate Zone are: Western Area Power 
Administration-Rocky Mountain Region (“WAPA-RMR”), Platte River Power Authority 
(“PRPA”), and Tri-State G&T Association-West (“TSGT-West”). 
 
 
Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates   
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be 
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue 
Requirement in accordance with Section IV.A of Attachment J.  The rates, including any 
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website. 
 
Revenue Crediting for Point-To-Point Rates 
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any 
adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency Use 
revenues, implemented in accordance with Section 34.1(2) of this Tariff.  The rates, including any 
applicable adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency 
Use revenues, shall be set forth in the RRR File. 
 
Firm Point-To-Point Transmission Service 
The Transmission Customer shall compensate the Transmission Provider each month for 
Reserved Capacity at the sum of the applicable charges set forth in the RRR File, calculated 
pursuant to the WAPA-RMR, PRPA, and TSGT-West formula rate shown in Attachment H, 
Addendums 57, 58, and 36, respectively, and described below:  
1. 
Yearly delivery: one-twelfth of the rate per MW of Reserved Capacity per year; the sum 
of WAPA-RMR, PRPA, and TSGT-West Annual Transmission Revenue Requirements

PDF page 7

determined under these entities’ formula rate, divided by the WAPA-LAP rate Zone total
load.
.
2.
Monthly delivery: rate per MW of Reserved Capacity per month; the Yearly delivery
divided by 12.
3.
Weekly delivery: rate per MW of Reserved Capacity per week; the Yearly delivery divided
by 52.
4.
Daily delivery: rate per MW of Reserved Capacity per day; Weekly delivery divided by 7.

The total demand charge in any day, pursuant to a reservation for Hourly delivery, shall
not exceed the rate specified for Daily delivery multiplied by the highest amount in megawatts of
Reserved Capacity in any hour during such day. In addition, the total demand charge in any week,
pursuant to a reservation for Hourly or Daily delivery, shall not exceed the rate specified for

PDF page 8

Weekly delivery multiplied by the highest amount in megawatts of Reserved Capacity in any hour 
during such week.

PDF page 9

Platte River Power Authority 
Rate Sheet for Point-To-Point Transmission Service 
 
 
The currently effective rates for Point-To-Point Transmission Service in the Platte River Power 
Authority (“PRPA”) rate Zone are set forth in the “PRPA PTP Rate Att T” tab of the Revenue 
Requirements and Rates File (“RRR File”) posted on the SPP website. Transmission Owners(s) 
that have Commission approved rate(s) in the PRPA rate Zone are: the Platte River Power 
Authority (“PRPA TO”), Tri-State G&T Association-West (“TSGT-West”), and Western Area 
Power Administration-Rocky Mountain Region (“WAPA-RMR”). 
 
Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates   
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be 
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue 
Requirement in accordance with Section IV.A of Attachment J.  The rates, including any 
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website. 
 
Point-To-Point Transmission Service and Conditional High Impact Large Load Service 
Revenue Crediting for Point-To-Point Rates 
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any 
adjustments for Schedule 7 and 8 revenues, and Schedule 15 revenues, implemented in accordance 
with Section 34.1(2) of this Tariff.  The rates, including any applicable adjustments for Schedule 
7 and 8 revenues, and Schedule 15 revenues, shall be set forth in the RRR File. 
 
Firm Point-To-Point Transmission Service 
The Transmission Customer shall compensate the Transmission Provider each month for 
Reserved Capacity at the sum of the applicable charges set forth in the RRR File, calculated 
pursuant to the PRPA TO, TSGT-West and WAPA-RMR formula rate shown in Attachment H, 
Addendums 55, 36 and 57, respectively, and described below:  
1. 
Yearly delivery: one-twelfth of the rate per MW of Reserved Capacity per year; the sum 
of PRPA TO, TSGT-West, and WAPA-RMR Annual Transmission Revenue

PDF page 10

Requirements determined under these entities’ formula rate, divided by the PRPA rate
Zone total load.
2.
Monthly delivery: rate per MW of Reserved Capacity per month; the Yearly delivery
divided by 12.
3.
Weekly delivery: rate per MW of Reserved Capacity per week; the Yearly delivery divided
by 52.
4.
Daily delivery: rate per MW of Reserved Capacity per day; Weekly delivery divided by 7.

PDF page 11

Weekly delivery multiplied by the highest amount in megawatts of Reserved Capacity in any hour 
during such week.

PDF page 12

SPP West Region Average  
Rate Sheet for Point-To-Point Transmission Service 
 
 
The currently effective rates for Point-To-Point Transmission Service with a Point of 
Delivery located in the Western Interconnection but not in the SPP West Region are set forth in 
the “West Thru&Out Zonal PTP” tab of the Revenue Requirements and Rates File (“RRR File”) 
posted on the SPP website.  
 
Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates   
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be 
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue 
Requirement in accordance with Section IV.A of Attachment J.  The rates, including any 
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website. 
 
Revenue Crediting for Point-To-Point Rates 
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any 
adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency Use 
revenues, implemented in accordance with Section 34.1(2) of this Tariff.  The rates, including any 
applicable adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency 
Use revenues, shall be set forth in the RRR File. 
 
Firm Point-To-Point Transmission Service 
The Transmission Customer shall compensate the Transmission Provider each month for 
Firm Point-To-Point Transmission Service at the applicable rate per megawatt of Reserved 
Capacity. The annual rate shall be based on the total of the Zonal Annual Transmission Revenue 
Requirements specified in Attachment H for all Zones in the SPP West Region, including Zone 19 
West and Zone 104 West but excluding Zone 19 East and Zone 104 East, with adjustments as 
specified in this Attachment T with regard to Section 34.1 of the Tariff and Section IV.A of 
Attachment J.  To calculate the annual rate per megawatt, such total adjusted Zonal Annual 
Transmission Revenue Requirement shall be divided by the sum of the twelve-month average 
coincident peak loads (in megawatts) for Zones in the SPP West Region that are applicable in

PDF page 13

calculating the zonal Load Ratio Shares, but excluding the loads for Zone 19 East and Zone 104
East. The calculation of the rate applicable to each period of Firm Point-To-Point Transmission
Service is described below:
1.
Per month

=
Annual rate divided by 12;
2.
Per week

=
Annual rate divided by 52;
3.
Per day “on-peak”
=
Annual rate divided by 260; and
4.
Per day “off-peak”
=
Annual rate divided by 365.
The total demand charge in any week, pursuant to a reservation for daily delivery, shall not
exceed the rate specified for weekly delivery multiplied by the highest amount in megawatts of
Reserved Capacity in any day during such week.

Non-Firm Point-To-Point Transmission Service
The Transmission Customer shall compensate the Transmission Provider for Non-Firm
Point-To-Point Transmission Service at the applicable rate per megawatt of Reserved Capacity.
The rates for Non-Firm Point-To-Point Transmission Service shall be calculated based on the
annual rate for Firm Point-To-Point Transmission Service. The calculation of the rate applicable
to each period of Non-Firm Point-To-Point Transmission Service is described below:
1.
Per month

=
Annual rate divided by 12;
2.
Per week

=
Annual rate divided by 52;
3.
Per day “on-peak”
=
Annual rate divided by 260;
4.
Per day “off-peak”
=
Annual rate divided by 365;
5.
Per hour “on-peak”
=
Annual rate divided by 4160; and
6.
Per hour “off-peak”
=
Annual rate divided by 8760.
The total demand charge in any day, pursuant to a reservation for hourly delivery, shall not exceed
the rate specified for daily delivery multiplied by the highest amount in megawatts of Reserved
Capacity in any hour during such day. In addition, the total demand charge in any week, pursuant
to a reservation for hourly or daily delivery, shall not exceed the rate specified for weekly delivery
multiplied by the highest amount in megawatts of Reserved Capacity in any hour during such
week.

PDF page 14

Tri-State G&T Association-West  
Rate Sheet for Point-To-Point Transmission Service 
 
 
The currently effective rates for Point-To-Point Transmission Service in the Tri-State G&T 
Association-West (“TSGT-West”) rate Zone are set forth in the “TSGT West PTP Rate Att T” tab 
of the Revenue Requirements and Rates File (“RRR File”) posted on the SPP website. 
Transmission Owner(s) that have Commission approved rate(s) in the TSGT-West rate Zone are: 
Tri-State G&T Association-West (“TSGT-West TO”), and Western Area Power Administration-
Rocky Mountain Region (“WAPA-RMR”), and Basin Electric Power Cooperative (“Basin”). 
 
Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates   
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be 
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue 
Requirement in accordance with Section IV.A of Attachment J.  The rates, including any 
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website. 
 
Revenue Crediting for Point-To-Point Rates 
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any 
adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency Use 
revenues, implemented in accordance with Section 34.1(2) of this Tariff.  The rates, including any 
applicable adjustments for Schedules 7, 8, 14, and 15 revenues, and Incremental Market Efficiency 
Use revenues, shall be set forth in the RRR File. 
 
Firm Point-To-Point Transmission Service 
The Transmission Customer shall compensate the Transmission Provider each month for 
Reserved Capacity at the sum of the applicable charges set forth in the RRR File, the formula rate 
of TSGT-WEST TO WAPA-RMR, and Basin set forth in Attachment H, Addendums 36, 57, and 
59, and as described below:  
1. 
Yearly delivery: one-twelfth of the rate per MW of Reserved Capacity per year; the sum 
of TSGT-West TO, WAPA-RMR, and Basin Annual Transmission Revenue Requirements

PDF page 15

determined under the entities’ formula rate, divided by the TSGT-West rate Zone total
load.

2.
Monthly delivery: rate per MW of Reserved Capacity per month; the Yearly delivery
divided by 12.
3.
Weekly delivery: rate per MW of Reserved Capacity per week; the Yearly delivery divided
by 52.
4.
Daily delivery: rate per MW of Reserved Capacity per day; Weekly delivery divided by 7.

PDF page 16

Weekly delivery multiplied by the highest amount in megawatts of Reserved Capacity in any hour 
during such week.

PDF page 17

Colorado River Storage Project 
Rate Sheet for Point-To-Point Transmission Service 
 
 
The currently effective rates for Point-To-Point Transmission Service in the Colorado 
River Storage Project (“WAPA-CRSP”) rate Zone are set forth in the “CRSP PTP Rate Att T” tab 
of the Revenue Requirements and Rates File (“RRR File”) posted on the SPP website.  
Transmission Owners that have Commission approved rate(s) in the WAPA-CRSP rate Zone are: 
Western Area Power Administration-Colorado River Storage Project (“WAPA-CRSP TO”), 
Farmington Electric Utility System (“FEUS”), Deseret Power (“Deseret”), and Tri-State G&T 
Association-West (“TSGT-West”). 
  
Balanced Portfolio Reallocation Adjustment of Point-To-Point Rates   
Rates for Point-To-Point Transmission Service specified in this Attachment T shall be 
adjusted to reflect any amount reallocated from the Zonal Annual Transmission Revenue 
Requirement in accordance with Section IV.A of Attachment J.  The rates, including any 
applicable reallocation adjustment, shall be set forth in the RRR File posted on the SPP website. 
 
Point-To-Point Transmission Service and Conditional High Impact Large Load Service 
Revenue Crediting for Point-To-Point Rates 
Rates for Point-To-Point Transmission Service under this Attachment T shall reflect any 
adjustments for Schedule 7 and 8 revenues, and Schedule 15 revenues, implemented in accordance 
with Section 34.1(2) of this Tariff.  The rates, including any applicable adjustments for Schedule 
7 and 8 revenues, and Schedule 15 revenues, shall be set forth in the RRR File. 
 
Firm Point-To-Point Transmission Service 
The Transmission Customer shall compensate the Transmission Provider each month for 
Reserved Capacity at the sum of the applicable charges set forth in the RRR File, calculated 
pursuant to the WAPA-CRSP TO and TSGT-West formula rate shown in Attachment H, 
Addendums 56 and 36, respectively, and described below:  
1. 
Yearly delivery: one-twelfth of the rate per MW of Reserved Capacity per year; WAPA-
CRSP TO and TSGT-West Annual Transmission Revenue Requirements determined under

PDF page 18

these entities’ formula rate, divided by the WAPA-CRSP rate Zone total load plus
$25,257.817/MW for FEUS plus $2,477.139/MW for Deseret.
2.
Monthly delivery: rate per MW of Reserved Capacity per month; the Yearly delivery
divided by 12 plus $2,104.818/MW for FEUS plus $206.428 /MW for Deseret.
3.
Weekly delivery: rate per MW of Reserved Capacity per week; the Yearly delivery divided
by 52 plus $485.727/MW for FEUS plus $47.637 /MW for Deseret.
4.
Daily delivery: rate per MW of Reserved Capacity per day; Weekly delivery divided by 7
plus $69.390/MW for FEUS plus $6.805/MW for Deseret.

Non-Firm Point-To-Point Transmission Service
The Transmission Customer shall compensate the Transmission Provider for Non-Firm
Point-To-Point Transmission Service up to the sum of the applicable charges set forth in the RRR
File, calculated pursuant to the WAPA-CRSP TO and TSGT-West formula rate shown in
Attachment H, Addendums 56 and 36 and described below:
1.
Monthly delivery: rate per MW of Reserved Capacity per month; the Firm Yearly delivery
divided by 12 plus $2,104.818/MW for FEUS plus $206.428/MW for Deseret.
2.
Weekly delivery: rate per MW of Reserved Capacity per week; the Firm Yearly delivery
divided by 52 plus $485.727/MW for FEUS plus $47.637/MW for Deseret.
3.
Daily delivery: rate per MW of Reserved Capacity per day; Firm Weekly delivery divided
by 7 plus $69.390/MW for FEUS plus $6.805/MW for Deseret.
4.
Hourly delivery: rate per MW of Reserved Capacity per hour; Monthly delivery divided
by 730 hours plus $2.883/MW for FEUS plus $0.283/MW for Deseret.

PDF page 19

Weekly delivery multiplied by the highest amount in megawatts of Reserved Capacity in any hour 
during such week.