Exhibit 21.1

PNW has the following subsidiaries: 1) Arizona Public Service Company

2) APS Energy Services Company, Inc.

3) El Dorado Investment Company

4) Pinnacle West Energy Corporation (merged into PWCC 8/1/06)

5) SunCor Development Company

6) APSES Holdings, Inc.

      APS Energy L.P. (dissolved 9/29/06)

7) Pinnacle West Marketing & Trading Co., LLC

Pinnacle West Energy affiliates:

1) GenWest, LLC	} now under PWCC
2) APACS Holdings, LLC	} now under PWCC

Arizona Public Service Company has the following subsidiaries/affiliates:

1) APS Foundation, Inc.

2) Axiom Power Solutions, Inc.

3) BIXCO, Inc.

4) PWE NEWCO, Inc.

5) Powertree Carbon Co., LLC

     APS Energy Services Company has the following affiliates:

1) Apex Power LLC

2) Northwind Phoenix LLC (a Delaware LLC/subsidiary of APSES)

3) Tucson District Energy, LLC (an Arizona LLC/subsidiary of Northwind Phx LLC)

4) Crest Power, LLC

     El Dorado has or has had the following investments/affiliates:

1)	Acoustic Locating Services, LLC
2)	Aegis Technologies, Inc.
3)	Arizona Business Accelerator
4)	Arizona Professional Baseball Ltd Partnership
5)	Dominion Fund II (Dissolved as of 12/31/02)
6)	El Dorado Ventures / El Dorado Ventures II (Dissolved as of 12/31/02)
7)	El Dorado Ventures III (Dissolving)
8)	Gateway Data Sciences Corp. (Dissolved as of 12/31/02)
9)	NAC Holding Inc./ NAC International Inc. (All stock sold on 11/18/04 to USEC, Inc)
10)	NxtPhase Corporation
11)	Phoenix Downtown Theater LLC
12)	Phoenix Suns Ltd Partnership (Sold on 6/30/04)
13)	PowerOneData, Inc.
14)	Serveron Corporation
15)	Underground Imaging Technologies, LLC (Vermeer Manufacturing Company)

SunCor has the following subsidiaries and other related entities:

1.	Avimor Water Reclamation Company (fka Foothills Sewer Company, Inc.)
2.	Centrepoint Associates, LLC (Kimco)
3.	Club West Golf Course, LLC
4.	Coral Canyon HD, LLC (SITLA)
5.	Golf de Mexico, S.A. de C.V.
6.	Hayden Ferry Lakeside, LLC (SunCor is Sole Member- purchased Benton-Robb interest)
	Lakeside Residential Communities, LLC
	BV at Hayden Ferry Lakeside, LLC
	Edgewater at Hayden Ferry Lakeside, LLC
	Waterford at Hayden Ferry Lakeside, LLC
	Hayden Ferry Lakeside II, LLC
	Hayden Ferry Lakeside III, LL
7.	Hidden Hills of Scottsdale, LLC
8.	Highland Water Company, Inc.
9.	Kabuto SunCor JV (Kabuto Int’l Corp.)
10.	Marina Heights, LLC
11.	Palm Valley 303 Building 1, LLC
12.	Palm Valley Golf Club, Inc.
13.	Palm Valley Professional Plaza, LLC
14.	Ranch Communities of America, LLC (NZ Legacy, LLC)
15.	Rancho Viejo de Santa Fe, Inc.
	Rancho Viejo Village Center, LLC (Dissolved 04-04-05)
	Ranchland Utility Company
	Santa Fe Water Resource Alliance, LLC
16.	Riverside Distribution Center, LLC (Ryan Buckeye, LLC)
17.	Scottsdale Mountain Limited Partnership
18.	SDC Prescott, LLC
19.	SDC Prescott Valley, LLC
20.	SDC Yavapai, LLC
21.	Sedona Golf Resort LC (Sedona Assoc. LP)
22.	StoneRidge Commercial, LLC (WLD Prescott, LLC)
23.	StoneRidge — Prescott Valley LLC (WLD Prescott, LLC)
	StoneRidge Golf Course, LLC
24.	SunCor Homes, Inc. (fka Golden Heritage Homes, Inc.)       SunCor Construction AZ, Inc. (fka Golden Heritage Construction, Inc.)      Golden Heritage Construction Nevada, LLC
	SunCor Financial, LLC (fka HFS Mortgage, LLC)
25.	SunCor Construction, Inc. (fka SCM, Inc.)
26.	SunCor Golf, Inc.
	Westworld Golf Course, LLC
27.	SunCor Idaho, Inc.
	Avimor, LLC (fka SunCor Idaho, LLC and Spring Valley Development, LLC)
	SunCor Realty & Management Idaho, LLC
28.	SunCor New Mexico, Inc.
	SunCor Albuquerque, LLC
	SunCor Construction NM, LLC
29.	SunCor Realty & Management Company
30.	SunCor Utah, Inc.
	Coral Canyon Town Center, LLC (SITLA and Southern
	Utah Homebuilders Association)
	Coral Canyon Town Center II, LLC (SITLA)
31.	SunRidge Canyon, LLC
32.	Talavi Associates, LLC (WLD Partners)
33.	TypeTwo, Inc. (Kabuto Int’l Corp.)