Arizona Corporation Commission Energy Workshop February 16, 2001
2 3/16/01ACCEnergy Workshop 2001/2002 Agenda California Energy Situation Update - Staff Energy Preparedness for 2001 and 2002 –Arizona Public Service Company –Salt River Project –Tucson Electric Power –Arizona Electric Power Cooperative –Western Area Power Administration –Southwest Gas Corporation Contingency Response Plan - Staff
3 3/16/01ACCEnergy Workshop 2001/2002 California Update
4 3/16/01ACCEnergy Workshop 2001/2002 Western Interconnection WSCC California Desert Southwest
WSCC EHV Transmission
Reference: NERC Reliability Assessment WSCC Data June 2000 Min.Reserve Min.Reserve Requirements
7 3/16/01ACCEnergy Workshop 2001/2002 History of Reserve Margins Per Dan Nix of CEC 5/17/00
8 3/16/01ACCEnergy Workshop 2001/2002 WSCC Generation Additions
9 3/16/01ACCEnergy Workshop 2001/2002 WSCC Generation Mix +28,189 +2,219
Wholesale Gas Supply Basins And Pipelines
11 3/16/01ACCEnergy Workshop 2001/2002 California ISO Forecast Per Dan Nix of CEC 5/17/00
WSCC NON-SIMULTANEOUS TRANSFER CAPABILITIES (MW) 4/00
75% OTC 90% OTC
Arizona EHV Transmission San Juan Navajo Glen Canyon North Gila Palo Verde Silver King Kyrene Liberty South Saguaro Vail Greenlee Cholla Mohave Mead Four Corners Springerville McKinley Tortolita Phoenix Tucson Yuma Westwing Coronad o Pinnacle Peak Transmission Import Constrained Area
15 3/16/01ACCEnergy Workshop 2001/2002 AZ-NM-S.Nev Reserve Requirements (MW) 1 Total Min. Reserve Load Year Resources Requirements Responsibility ,932 20,834 18, ,187 22,060 19, ,581 24,757 21, ,521 25,454 22, ,576 26,379 23, ,076 27,348 24, ,076 28,256 25, ,576 29,140 25, ,576 30,048 26, ,576 30,966 27,430 1 Per WSCC Information Summary, June , ,242 2,444
16 3/16/01ACCEnergy Workshop 2001/2002 Arizona-NM-S. NV Generation Mix +11,763
17 3/16/01ACCEnergy Workshop 2001/2002 Arizona Generation 2001
18 3/16/01ACCEnergy Workshop 2001/2002 New Arizona Generation 2002
19 3/16/01ACCEnergy Workshop 2001/2002 Staff Summary AZ Supply Plans Met WSCC Reserve Req & 2002 Dependent Upon New Plants Existing Gas Supply & Delivery is Critical and Subject to Curtailment New Plants Utilize Fuel Portfolio’s With Interruptible Gas Purchases But Sell Firm Electric Commodity Transmission Capacity Is Marginal With Local Transmission Import Constraints Exposed To System Deficiencies In WSCC
20 3/16/01ACCEnergy Workshop 2001/2002 What Actions Are Needed? Prepare a coordinated load reduction strategy –Voluntary reduction / Price induced ? –Emergency response Encourage distributed resource solutions Encourage new EHV transmission to accompany new plant additions ACC Web Site
21 3/16/01ACCEnergy Workshop 2001/2002 Questions ?