# ASSUMPTIONS USED TO DETERMINE FIRM TRANSMISSION SERVICE Capacity RESERVATIONS FOR FISCAL YEARS 2005-2009

## PARKER-DAVIS PROJECT

AK-CHIN; 87-BCA-10000; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Arizona Electric Power Cooperative; 03-DSR-11153; terminates 12/31/08

Extended existing 40,000 kW capacity reservation from 1/09 to 9/09

Arizona Power Pooling Association-AEPCO; 87-BCA-10085; terminates
9/30/08

Extended existing 21,550 kW capacity reservation from 10/08 to 9/09

Arizona Power Pooling Association-Mesa; 87-BCA-10085; terminates 9/30/08

Extended existing 9,429 kW capacity reservation from 10/08 to 9/09

Arizona Power Pooling Association-ED-2; 87-BCA-10001; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Arizona Power Pooling Association-ED-2; 87-BCA-10135; terminates 9/30/08

Extended existing 32,000 kW capacity reservation from 10/08 to 9/09

Arizona Power Pooling Association-Mesa; 87-BCA-10135; terminates 9/30/08

Extended existing 121,440 kW capacity reservation from 10/08 to 9/09

Arizona Power Pooling Association-SWTC; 87-BCA-10135; terminates 9/30/08

Extended existing 199,400 kW capacity reservation from 10/08 to 9/09

Aha Macav; 93-PAO-10529; terminates 9/30/08

Extended existing 10,000 kW capacity reservation from 10/08 to 9/09

Arizona Public Service; DE-MS65-85WP39510; terminates 9/30/08

Extended existing typical 126,086 kW reservation from 10/08 to 9/09

Colorado River Agency; 87-BCA-10003; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Colorado River Agency; 87-BCA-10087; terminates 9/30/08

Extended existing 7,667 kW capacity reservation from 10/08 to 9/09

Colorado River Commission; 87-BCA-10004; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Colorado River Commission; 87-BCA-10086; terminates 9/30/08

Extended existing 50,308 kW capacity reservation from 10/08 to 9/09

Edwards AFB; 87-BCA-10088; terminates 9/30/08

Extended existing 16,762 kW capacity reservation from 10/08 to 9/09

Electrical District 3; 87-BCA-10089; terminates 9/30/08

Extended existing 2,208 kW capacity reservation from 10/08 to 9/09

Electrical District 3; 87-BCA-10090; terminates 9/30/08

Extended existing 2,588 kW capacity reservation from 10/08 to 9/09

Electrical District 3; 87-BCA-10005; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Electrical District 4; 87-BCA-10006; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Electrical District 5; 87-BCA-10008; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Electrical District 7; 87-BCA-10010; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Fort Mojave Indian Tribe; 87-BCA-10091, terminates 9/30/08

Extended existing 1,649 kW capacity reservation from 10/08 to 9/09

Fredonia, AZ; 87-BCA-10092, terminates 9/30/08

Extended existing 1,479 kW capacity reservation from 10/08 to 9/09

Gila Bend Aux; 87-BCA-10094, terminates 9/30/08

Extended existing 394 kW capacity reservation from 10/08 to 9/09

Imperial Irrigation District; 90-PAO-10337; terminates 12/31/04

Extended existing 160,000 kW capacity reservation from 1/05 to 9/09

Imperial Irrigation District; 87-BCA-10095, terminates 9/30/08

Extended existing 29,946 kW capacity reservation from 10/08 to 9/09

Luke AFB; 87-BCA-10096, terminates 9/30/08

Extended existing 2,230 kW capacity reservation from 10/08 to 9/09

March AFB; 92-PAO-10469, terminates 9/30/08

Extended existing 4,380 kW capacity reservation from 10/08 to 9/09

Marine Corps Air Station Yuma; 87-BCA-10097, terminates 9/30/08

Extended existing 2,006 kW capacity reservation from 10/08 to 9/09

Maricopa Cty Muni Water Con District 1; 87-BCA-10011; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Needles, CA; 87-BCA-10098, terminates 9/30/08

Extended existing 4,668 kW capacity reservation from 10/08 to 9/09

Nellis AFB; 87-BCA-10099, terminates 9/30/08

Extended existing 2,780 kW capacity reservation from 10/08 to 9/09

Nevada Operations Office for the Test Site; 87-BCA-10100, terminates
9/30/08

Extended existing 2,217 kW capacity reservation from 10/08 to 9/09

Safford, AZ; 87-BCA-10016; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Salt River Project; 87-BCA-10103, terminates 9/30/08

Extended existing 27,867 kW capacity reservation from 10/08 to 9/09

San Carlos Irrigation Project; 87-BCA-10018; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

San Carlos Irrigation Project; 87-BCA-10104; terminates 9/30/08

Extended existing 15,496 capacity reservation from 10/08 to 9/09

San Carlos Irrigation Project; 87-BCA-10127; terminates 9/30/08

Extended existing 78,000 capacity reservation from 10/08 to 9/09

Southern California Edison; 95-PAO-10656; terminates 8/31/04

Extended existing 9,000 kW capacity reservation from 9/04 to 9/09

Sundance Energy; 01-DSR-11119; terminates 5/31/07

Extended existing 320,000 kW capacity reservation from 6/07 to 9/09

Thatcher, AZ; 87-BCA-10105, terminates 9/30/08

Extended existing 308 kW capacity reservation from 10/08 to 9/09

Thatcher, AZ; 87-BCA-10020; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Tohona O'odha; 87-BCA-10102, terminates 9/30/08

Extended existing 2,665 kW capacity reservation from 10/08 to 9/09

UNS Electric; 87-BCA-10140; terminates 5/31/08

Extended existing 314,487 kW capacity reservation from 6/08 to 9/09

Wellton-Mohawk Irrigation Drainage District; 87-BCA-10021; terminates
9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Wellton-Mohawk Irrigation Drainage District; 87-BCA-10142; terminates
9/30/08

Extended existing 13,000 kW capacity reservation from 10/08 to 9/09

Wellton-Mohawk Irrigation Drainage District; 87-BCA-10106, terminates
9/30/08

Extended existing 2,827 kW capacity reservation from 10/08 to 9/09

Wellton-Mohawk Irrigation Drainage District; 96-DSR-10715, terminates
9/30/08

Extended existing 33,066 kW capacity reservation from 10/08 to 9/09

Wickenberg, AZ; 87-BCA-10107, terminates 9/30/08

Extended existing 1,709 kW capacity reservation from 10/08 to 9/09

Yuma County Water Users' Association; 96-DSR-10715, terminates 9/30/08

Extended existing 4,237 kW capacity reservation from 10/08 to 9/09

Yuma Irrigation District; 87-BCA-10108, terminates 9/30/08

Extended existing 885 kW capacity reservation from 10/08 to 9/09

Yuma Proving Ground; 87-BCA-10023; terminates 9/30/24

> Increased existing capacity reservation by 1% for change in
> Parker-Davis loss adjustment factor

Yuma Proving Ground; 87-BCA-10109, terminates 9/30/08

Extended existing 4,754 kW capacity reservation from 10/08 to 9/09

## INTERTIE PROJECT 

230/345-kV Transmission System:

Arizona Power Authority; DE-MS65-85WP39502; terminates 9/30/17

> Reduced existing capacity reservation by 1% for change in Parker-Davis
> loss adjustment factor

Arizona Electric Power Cooperative; 03-DSR-11153; terminates 12/31/08

Extended existing 40,000 kW capacity reservation from 1/09 to 9/09

AJO Improvement Company; 96-DSR-10749; terminates 1/1/07

Extended existing 2,910 kW capacity reservation from 1/07 to 9/09

Arizona Power Pooling Association-Mesa; 87-BCA-10135; terminates 9/30/08

Extended existing 47,000 kW capacity reservation from 10/08 to 9/09

Arizona Power Pooling Association-SWTC; 87-BCA-10135; terminates 9/30/08

Extended existing 75,248 kW capacity reservation from 10/08 to 9/09

Central Arizona Water Conservation District; 93-PAO-10537; terminates
9/30/11

> Reduced existing capacity reservation by 1% for change in Parker-Davis
> loss adjustment factor

Imperial Irrigation District; 90-PAO-10337; terminates 12/31/04

Extended existing 123,750 kW capacity reservation from 1/05 to 9/09

US Bureau of Reclamation; 87-BCA-10047, terminates 9/30/21

> Reduced existing capacity reservation by 1% for change in Parker-Davis
> loss adjustment factor

500-kV Transmission System:

POWEREX and/or New Contractor(s); 01-DSR-11108; terminates 1/1/05

Extended existing 100,000 kW capacity reservation from 1/05 to 9/09

Sierra Pacific Resources and/or New; 03-DSR-11150; terminates 1/31/05

Extended existing 52,000 kW capacity reservation from 2/05 to 9/09

New Firm Transmission Service Sales; Intertie 500-kV phase-in period

10/04 to 9/05 - 198,000 kW; 10/05 to 9/06 - 298,000 kW;

10/06 to 9/07 - 398,000 kW; 10/07 to 9/08 - 398,000 kW;

10/08 to 9/19 -- 398,000 kW

## CENTRAL ARIZONA PROJECT 

Arizona Public Service; 02-DSR-11143; terminates 8/31/07

Extended existing 35,000 kW capacity reservation from 9/07 to 9/09

UNS Electric; 87-BCA-10140; terminates 2/28/08

Extended existing 106,536 kW capacity reservation from 3/08 to 9/09

## MULTI-SYSTEM 

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New Firm Transmission Service Sales resulting from the additional
capacity made available by implementing a Multi-System Transmission
Service Rate: 78,000 kW