Supplemental Indenture, dated as of March 22, 2012



 Exhibit 4.1 
 RECORDING REQUESTED BY 
 AND WHEN RECORDED MAIL TO: 

U.S. BANK NATIONAL ASSOCIATION 
 633 W. FIFTH STREET, 24th FLOOR 
 LOS ANGELES, CA 90071 

ATTN: CORPORATE TRUST SERVICES 
 Index as a UCC Filing and an Indenture 
 This is a Security Agreement and
a Mortgage of Chattels 
 as well as a Mortgage of Real Estate and Other Property 

SIXTY-FIRST SUPPLEMENTAL INDENTURE 
 FROM 
 SAN DIEGO GAS & ELECTRIC COMPANY 

TO 

U.S. BANK NATIONAL ASSOCIATION, as Trustee 
 **************** 
 Dated as of March 22, 2012 







 THIS SIXTY-FIRST SUPPLEMENTAL INDENTURE IS A SECURITY 

AGREEMENT AND A MORTGAGE OF CHATTELS AS WELL AS 
 A MORTGAGE OF REAL ESTATE AND OTHER PROPERTY 
 THIS SIXTY-FIRST
SUPPLEMENTAL INDENTURE, dated as of the 22nd day of March 2012, by and between SAN DIEGO GAS & ELECTRIC COMPANY, a corporation duly organized and existing under and by virtue of the laws of the State of California, having its principal
office in that State in the City of San Diego (the “Company”), and U.S. BANK NATIONAL ASSOCIATION, a banking association duly organized under an act known as the “National Bank Act,” of the United States of America, having
a corporate trust office in the City of Los Angeles, State of California, as Trustee (the “Trustee”). 

WHEREAS, the Company executed and delivered a Mortgage and Deed of Trust (the “Original Indenture”), dated July 1,
1940, to The Bank of California, National Association, as predecessor trustee to Bankers Trust Company of California, National Association, as predecessor trustee to First Trust of California, National Association, (subsequently renamed U.S. Bank
Trust National Association) as predecessor trustee to the Trustee, to secure payment of the principal of and the interest on all bonds of the Company at any time outstanding thereunder according to their tenor and effect, and to provide the terms
and provisions with respect to its First Mortgage Bonds, 3 3/8% Series due July 1, 1970, issued in the aggregate principal amount of $16,000,000 and heretofore retired; and 

WHEREAS, the Company executed and delivered to the then current trustee, a First Supplemental Indenture dated as of December 1,
1946, a Second Supplemental Indenture dated as of March 1, 1948, a Third Supplemental Indenture dated as of April 1, 1952, a Fourth Supplemental Indenture dated as of April 1, 1954, a Fifth Supplemental Indenture dated as of
October 1, 1955, a Sixth Supplemental Indenture dated as of October 1, 1957, a Seventh Supplemental Indenture dated as of October 1, 1960, an Eighth Supplemental Indenture dated as of March 1, 1967, a Tenth Supplemental Indenture
dated as of December 1, 1968, an Eleventh Supplemental Indenture dated as of February 1, 1970, a Twelfth Supplemental Indenture dated as of September 1, 1971, a Thirteenth Supplemental Indenture dated as of January 15, 1974, a
Fourteenth Supplemental Indenture dated as of December 15, 1974, a Fifteenth Supplemental Indenture dated as of May 1, 1975, a Seventeenth Supplemental Indenture dated as of July 15, 1976, an Eighteenth Supplemental Indenture dated as
of March 15, 1977, a Nineteenth Supplemental Indenture dated as of May 1, 1978, a Twentieth Supplemental Indenture dated as of March 15, 1980, a Twenty-First Supplemental Indenture dated as of August 1, 1980, a Twenty-Second
Supplemental Indenture dated as of July 15, 1981, a Twenty-Third Supplemental Indenture dated as of January 15, 1982, a Twenty-Fourth Supplemental Indenture dated as of August 16, 1982, a Twenty-Fifth Supplemental Indenture dated as
of August 16, 1982, a Twenty-Sixth Supplemental Indenture dated as of August 16, 1982, a Twenty-Seventh Supplemental Indenture dated as of June 2, 1983, a Twenty-Eighth Supplemental Indenture dated as of July 15, 1983, a
Twenty-Ninth Supplemental Indenture dated as of September 1, 1983, a Thirty-First, Supplemental Indenture dated as of May 1, 1984, a Thirty-Second Supplemental Indenture dated as of December 1, 1984, a Thirty-Third Supplemental
Indenture dated as of September 1, 1985, a Thirty-Fourth Supplemental Indenture dated as of December 1, 1985, a Thirty-Fifth Supplemental Indenture dated as of July 1, 1986, a Thirty-Sixth Supplemental Indenture dated as of
December 1, 1986, a Thirty-Seventh Supplemental Indenture dated as of September 1, 1987, a Thirty-Eighth Supplemental Indenture dated as of April 15, 1990, a Thirty-Ninth Supplemental Indenture dated as of December 1, 1991, a
Fortieth Supplemental Indenture dated as of April 1, 1992, a Forty-First Supplemental Indenture dated as of June 15, 1992, a Forty-Second Supplemental Indenture dated as of September 1, 1992, a Forty-Third Supplemental Indenture dated
as of December 1, 1992, a Forty-Fourth Supplemental Indenture dated as of April 1, 1993, a Forty-Fifth Supplemental Indenture dated as of June 1, 1993, a Forty-Sixth Supplemental Indenture dated as of July 1, 1993, a
Forty-Seventh Supplemental Indenture dated as of June 1, 1995, a Forty-Eighth Supplemental Indenture dated as of June 1, 1995, a Forty-Ninth Supplemental Indenture dated as of June 1, 2004, a Fiftieth Supplemental Indenture dated as
of May 19, 2005, a Fifty-First Supplemental Indenture dated as of November 17, 2005, a Fifty-Second Supplemental Indenture dated as of June 8, 2006, a Fifty-Third Supplemental Indenture dated as of September 1, 2006, a
Fifty-Fourth Supplemental Indenture dated as of September 20, 2007, a Fifty-Fifth Supplemental Indenture dated as of May 14, 2009, a Fifty-Sixth Supplemental Indenture dated as of May 13, 2010, a Fifty-Seventh Supplemental Indenture
dated as of August 26, 2010, a Fifty-Eighth Supplemental Indenture dated as of August 18, 2011, a Fifty-Ninth Supplemental Indenture dated as of October 6, 2011 and a Sixtieth Supplemental Indenture dated as of November 17, 2011,
whereby, among other things, the Company set forth certain of the 

  
 1 








 
particulars of the Bonds of series designated “First Mortgage Bonds, 2 3/4% Series due December 1, 1981” issued in the aggregate principal amount of $2,800,000, “First
Mortgage Bonds, Series C due 1978” issued in the aggregate principal amount of $10,000,000, “First Mortgage Bonds, Series D due 1982” issued in the aggregate principal amount of $512,000,000, “First Mortgage Bonds, Series E due
1984” issued in the aggregate principal amount of $17,000,000, “First Mortgage Bonds, Series F due 1985” issued in the aggregate principal amount of $18,000,000, “First Mortgage Bonds, Series G due 1987” issued is the
aggregate principal amount of $12,000,000, “First Mortgage Bonds, Series H due 1990” issued in the aggregate principal amount of $30,000,000, “First Mortgage Bonds, Series I due 1997” issued in the aggregate principal amount of
$25,000,000, “First Mortgage Bonds, Series J due 1998” issued in the aggregate principal amount of $35,000,000, “First Mortgage Bonds, Series K due 2000” issued in the aggregate principal amount of $40,000,000, “First
Mortgage Boards, Series L due 2001” issued in the aggregate principal amount of $45,000,000, “First Mortgage Bonds, Series M due 2004” issued in the aggregate principal amount of $75,000,000, “First Mortgage Bonds, Series N due
1979” issued in the aggregate principal amount of $50,000,000, “First Mortgage Bonds, Series O due 1982” issued in the aggregate principal amount of $40,000,000, “First Mortgage Bonds, Series P due 2006” issued in the
aggregate principal amount of $45,000,000, “First Mortgage Bonds, Series Q due 2007” issued in the aggregate principal amount of $50,000,000, “First Mortgage Bonds, Series R due 2008” issued in the aggregate principal amount of
$50,000,000, “First Mortgage Bonds, Series S due 2010” issued in the aggregate principal amount of $50,000,000, “First Mortgage Bonds, Series T due 2010” issued in the aggregate principal amount of $75,000,000, “First
Mortgage Bonds, Series U-1 due 1984, and U-2 due 1994” issued in the aggregate principal amount of $6,567,000 for Series U-1 and $13,268,000 for Series U-2, “First Mortgage Bonds, Series V due 2011” issued in the aggregate amount of
$50,000,000, “First Mortgage Bonds, Series W due 1988” issued in the aggregate principal amount of $40,000,000, “First Mortgage Bonds, Series X due 1987” issued in the aggregate principal amount of $20,000,000, “First
Mortgage Bonds, Series Y due 1987” issued in the aggregate principal amount of $15,000,000, “First Mortgage Bonds, Series Z, due 2013” issued in the aggregate principal amount of $65,000,000, “First Mortgage Bonds, Series AA, due
2018” issued in the aggregate principal amount of $150,000,000, “First Mortgage Bonds, Series BB, due 2018” issued in the aggregate principal amount of $150,000,000, “First Mortgage Bonds, Series CC, due 2008” issued in the
aggregate principal amount of $53,000,000, “First Mortgage Bonds Series DD, due 2008” issued in the aggregate principal amount of $27,000,000, “First Mortgage Bonds, Series EE, due 2015” issued in the aggregate principal amount
of $100,000,000, “First Mortgage Bonds, Series FF, due 2007” issued in the aggregate principal amount of $35,000,000, “First Mortgage Bonds, Series GG, due 2021” issued in the aggregate principal amount of $44,250,000,
“First Mortgage Bonds, Series HH, due 2021” issued in the aggregate principal amount of $381,350,000, “First Mortgage Bonds, Series II due 2023” issued in the aggregate principal amount of $25,000,000, “First Mortgage Bonds,
Series JJ, due 2015” issued in aggregate principal amount of $100,000,000, “First Mortgage Bonds, Series KK, due 2015” issued in the aggregate principal amount of $14,400,000, “First Mortgage Bonds, Series LL, due 2022”
issued in the aggregate principal amount of $60,000,000, “First Mortgage Bonds, Series MM due 2002” issued in the aggregate principal amount of $80,000,000, “First Mortgage Bonds, Series NN” issued in the aggregate principal
amount of $118,615,000, “First Mortgage Bonds, Series OO” issued in the aggregate principal amount of $250,000,000, “First Mortgage Bonds, Series PP, due 2018” issued in the aggregate principal amount of $70,795,000, “First
Mortgage Bonds, Series QQ, due 2018” issued in the aggregate principal amount of $14,915,000, “First Mortgage Bonds, Series RR, due 2021” issued in the aggregate principal amount of $60,000,000, “First Mortgage Bonds, Series SS,
due 2018” issued in the aggregate principal amount of $92,945,000, “First Mortgage Bonds, Series TT due 2020” issued in the aggregate principal amount of $57,650,000, “First Mortgage Bonds, Series UU due 2020” issued in the
aggregate principal amount of $16,700,000, “First Mortgage Bonds, Series VV due 2034” issued in the aggregate principal amount of $43,615,000, “First Mortgage Bonds, Series WW due 2034” issued in the aggregate principal amount of
$40,000,000, “First Mortgage Bonds, Series XX due 2034” issued in the aggregate principal amount of $35,000,000, “First Mortgage Bonds, Series YY due 2034” issued in the aggregate principal amount of $24,000,000, “First
Mortgage Bonds, Series ZZ due 2034” issued in the aggregate principal amount of $33,650,000, “First Mortgage Bonds, Series AAA due 2039” issued in the aggregate principal amount of $75,000,000, “First Mortgage Bonds, Series BBB
due 2035” issued in the aggregate principal amount of $250,000,000, “First Mortgage Bonds, Series CCC due 2015” issued in the aggregate principal amount of $250,000,000, “First Mortgage Bonds, Series DDD due 2026” issued in
the aggregate principal amount of $250,000,000, “First Mortgage Bonds, Series EEE due 2018” issued in the aggregate principal amount of $161,240,000, “First Mortgage Bonds, Series FFF due 2037” issued in the aggregate principal
amount of $250,000,000, “First Mortgage Bonds, Series GGG due 2039” issued in the aggregate principal amount of $300,000,000, “First Mortgage Bonds, Series HHH due 2040” issued in the aggregate principal amount of $250,000,000,
“First Mortgage Bonds, Series III due 2040” issued in the aggregate principal amount of 

  
 2 








 
$500,000,000, “First Mortgage Bonds, Series JJJ due 2021” issued in the aggregate principal amount of $350,000,000 and “First Mortgage Bonds, Series LLL due 2041” issued in
the aggregate principal amount of $250,000,000, respectively, all of which First Mortgage Bonds have heretofore been retired or redeemed, except the Series KK due 2015, the Series OO, the Series RR due 2021, the Series VV due 2034, the Series WW due
2034, the Series XX due 2034, the Series YY due 2034, the Series ZZ due 2034, the Series AAA due 2039, the Series BBB due 2035, the Series CCC due 2015, the Series DDD due 2026, the Series EEE due 2018, the Series FFF due 2037, the Series GGG due
2039, the Series HHH due 2040, the Series III due 2040, the Series JJJ due 2021 and the Series LLL due 2041, which are presently issued and outstanding; and 
 WHEREAS, certain of the provisions of the Original Indenture have been amended by the aforesaid Second and Tenth Supplemental Indentures, a Ninth Supplemental Indenture dated as of August 1, 1968, a
Sixteenth Supplemental Indenture dated August 28, 1975, and a Thirtieth Supplemental Indenture dated September 23, 1983; and 
 WHEREAS, the Original Indenture and each of said Supplemental Indentures have been recorded in the Official Records of the Recorders of the Counties of San Diego, Orange, Riverside, and Imperial in the
State of California, the Counties of Yuma and Maricopa in the State of Arizona and the County of Clark in the State of Nevada, as follows: 
  

											
	  	  	 	  	 Counties of

	 Document
	  	 Official Records
	  	 San Diego
	  	 Orange
	  	 Riverside
	  	 Imperial

	 Original

Indenture
	  	 Book
 Page

Date
	  	 1087
 1

Oct. 10, 1940
	  	 1062
 300

Oct. 10, 1940
	  	 1765
 364

July 13, 1955
	  	 1369
 232

Nov. 22, 1974

						
	 First

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 2321
 48

Jan. 2, 1947
	  	 1506
 472

Jan. 9, 1947
	  	 1765
 499

July 13, 1955
	  	 1369
 332

Nov. 22, 1974

						
	 Second

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 2537
 363

Mar. 16, 1948
	  	 1616
 190

Mar. 15, 1948
	  	 1765
 448

July 13, 1955
	  	 1369
 343

Nov. 22, 1974

						
	 Third

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 4424
 535

Apr. 3, 1952
	  	 2311
 116

Apr. 3, 1952
	  	 1765
 475

July 13, 1955
	  	 1369
 370

Nov. 22, 1974

						
	 Fourth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 5193
 217

Apr. 2, 1954
	  	 2701
 153

Apr. 2, 1954
	  	 1765
 336

July 13, 1955
	  	 1369
 409

Nov. 22, 1974

						
	 Fifth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 5893
 291

Dec. 5, 1955
	  	 3304
 205

Dec. 5, 1955
	  	 1829
 3

Dec. 5, 1955
	  	 2369
 456

Nov. 22, 1974

						
	 Sixth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 6829
 390

Nov. 12, 1957
	  	 4099
 109

Nov. 12, 1957
	  	 2175
 538

Nov. 12, 1957
	  	 1369
 492

Nov. 22, 1974

						
	 Seventh

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 1960 Series 1
 File No.
202061
 Oct. 10, 1960
	  	 5455
 385

Oct. 10, 1960
	  	 2780
 3

Oct. 10, 1960
	  	 1369
 541

Nov. 22, 1974

						
	 Eighth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 1967 Series 8
 File No.
33860
 Mar. 13, 1967
	  	 8197
 129

Mar. 13, 1967
	  	 Endorsement
 No.
20925
 Mar. 13, 1967
	  	 1369
 618

Nov. 22, 1974



  
 3 









											
						
	 Ninth

Supplemental
 Indenture
	  	 Book
 Page

Doc. No.
 Date
	  	 1968 Series 9

138926
 Aug. 14, 1968
	  	 8691
 69

9816
 Aug. 14, 1968
	  	 78781
 Aug. 14,
1968
	  	 1369
 694

Nov. 22, 1974

						
	 Tenth

Supplemental
 Indenture
	  	 Book
 Page

Doc. No.
 Date
	  	 1968 Series 9

215131
 Dec. 9, 1968
	  	 8810
 375

Dec. 9, 1968
	  	 Endorsement
 No.
119982
 Dec. 9, 1968
	  	 1369
 706

Nov. 22, 1974

						
	 Eleventh

Supplemental
 Indenture
	  	 Book
 Page

Doc. No.
 Date
	  	 1970
 27782

Feb. 16, 1970
	  	 9217
 516

Feb. 16, 1970
	  	 Endorsement
 No.
14780
 Feb. 16, 1970
	  	 1369
 725

Nov. 22, 1974

						
	 Twelfth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
212688
 Sept. 20, 1971
	  	 9810
 539

Sept. 20, 1971
	  	 Endorsement
 No.
106508
 Sept. 20, 1971
	  	 1369
 744

Nov. 22, 1974

						
	 Thirteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
74-006878
 Jan. 10, 1974
	  	 11055
 1

Jan. 10, 1974
	  	 Endorsement
 No.
3853
 Jan. 10, 1974
	  	 1369
 763

Nov. 22, 1974

						
	 Fourteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
74-322156
 Dec. 11, 1974
	  	 11303
 458

Dec. 11, 1974
	  	 Endorsement
 No.
157219
 Dec. 11, 1974
	  	 1369
 1689

Dec. 11, 1974

						
	 Fifteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
755-108612
 May 7, 1975
	  	 11395
 1879

May 7, 1975
	  	 Instrument
 No.
52617
 May 7, 1975
	  	 1374
 809

May 7, 1975

						
	 Sixteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
75-235624
 Sept. 2, 1975
	  	 11500
 1620

Sept. 2, 1975
	  	 Instrument
 No.
107732
 Sept. 3, 1975
	  	 1378
 952

Sept. 2, 1975

						
	 Seventeenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
76-224493
 July 16, 1976
	  	 11815
 640

July 16, 1976
	  	 Instrument
 No.
103484
 July 16, 1976
	  	 1389
 687

July 16, 1976

						
	 Eighteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
77-100483
 Mar. 18, 1977
	  	 12110
 58

Mar. 18, 1977
	  	 Instrument
 No.
45619
 Mar. 18, 1977
	  	 1398
 1675

Mar. 18, 1977

						
	 Nineteenth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
78-194210
 May 12, 1978
	  	 12672
 1803-1822

May 12, 1978
	  	 Instrument
 No.
94450
 May 12, 1978
	  	 1415
 1638

May 12, 1978

						
	 Twentieth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
80-082569
 Mar. 11, 1980
	  	 13530
 722

Mar. 11, 1980
	  	 Instrument
 No.
47195
 Mar. 11, 1980
	  	 1448
 1221

Mar. 11, 1980

						
	 Twenty-First

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
80-245100
 Aug. 1, 1980
	  	 13687
 349

Aug. 1, 1980
	  	 Instrument
 No.
139349
 Aug. 1, 1980
	  	 1455
 1660

Aug. 1, 1980



  
 4 









											
						
	 Twenty-Second

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
81-22576
 July 17, 1981
	  	 Instrument
 No.
24605
 July 17, 1981
	  	 Instrument
 No.
135815
 July 17, 1981
	  	 1472
 508

July 17, 1981

						
	 Twenty-Third

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
82-02387
 Jan. 27, 1982
	  	 Instrument
 No.
82-031423
 Jan. 27, 1982
	  	 Instrument
 No.
16093
 Jan. 27, 1982
	  	 1479
 1714

Jan. 27, 1982

						
	 Twenty-Fourth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
82-257258
 Aug. 19, 1982
	  	 File/Page
 No.
82-291894
 Aug. 19, 1982
	  	 File/Page
 No.
82/143370212
 Aug. 19, 1982
	  	 1489
 Aug. 19,
1982

						
	 Twenty-Fifth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
82-257259
 Aug. 19, 1982
	  	 File/Page
 No.
82-291895
 Aug. 19, 1982
	  	 File/Page
 No.
82-143371
 Aug. 19, 1982
	  	 1489
 236

Aug. 19, 1982

						
	 Twenty-Sixth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
82-257260
 Aug. 19, 1982
	  	 File/Page
 No.
82-291896
 Aug. 19, 1982
	  	 File/Page
 No.
82/143372260
 Aug. 19, 1982
	  	 1489
 Aug. 19,
1982

						
	 Twenty-Seventh

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
83-200545
 June 15, 1983
	  	 File/Page
 No.
83-253901
 June 15, 1983
	  	 File/Page
 No.
118670
 June 15, 1983
	  	 1503
 743

June 15, 1983

						
	 Twenty-Eighth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
83-252396
 July 22, 1983
	  	 File/Page
 No.
83-316224
 July 22, 1983
	  	 File/Page
 No.
147671
 July 22, 1983
	  	 1505
 583

July 22, 1983

						
	 Twenty-Ninth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page
 No.
83-339007
 Sept. 22, 1983
	  	 File/Page
 No.
83-417956
 Sept. 22, 1983
	  	 File/Page
 194083

Sept. 22, 1983
	  	 1508
 1425

Sept. 22, 1983

					
	 	  	 	  	 Counties of
	  	 	  	 
	Thirtieth	  	 Official
 Records
	  	 Yuma
	  	 Maricopa
	  	  	  	  
	 Supplemental

Indenture
 Consisting of
 Original and

Twenty-Nine
 Supplemental
 Indentures thereto
	  	 Book
 Page

Book
 Page

Date
	  	 Docket 1352

272-1002
 Docket 1353

1-264
 Sept. 28, 1983
	  	 File No.

83-399354
  

 
 Oct. 3, 1983
	  		  	


															
		
	  	  	 Counties of

	 Document
	  	 Official Records
	  	 San Diego
	  	 Orange
	  	 Riverside
	  	 Imperial
	  	 Yuma
	  	 Maricopa

	 Thirty-First

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

84-161897
 5/2/84
	  	 File/Page

84-180870
 5/2/84
	  	 File/Page
 92011

5/2/84
	  	 1520
 1552

4/30/84
	  	 Docket 1382

743-761
 4/30/84
	  	 File No.

84-186813
 5/2/84

								
	 Thirty-Second

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

84-466428
 12/14/84
	  	 File/Page

84-517843
 12/14/84
	  	 File/Page
 267452

12/14/84
	  	 1533
 753

12/14/84
	  	 Docket 1413

216-235
 12/14/84
	  	 File No.

84-537706
 12/14/84



  
 5 









															
								
	 Thirty-Third

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

85-323210
 9/4/85
	  	 File/Page

85-333505
 9/4/85
	  	 File/Page
 198810

9/4/85
	  	 1546
 708

9/4/85
	  	 Docket 1450
 816

9/4/85
	  	 File No.

85-418309
 9/4/85

								
	 Thirty-Fourth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

85-42465
 12/2/85
	  	 File/Page

85-481794
 12/2/85
	  	 File/Page
 270136

12/2/85
	  	 1550
 1573

12/3/85
	  	 Docket 1463
 215

12/3/85
	  	 File No.

85-568874
 12/2/85

								
	 Thirty-Fifth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

86-279922
 7/8/86
	  	 File/Page

86-290957
 7/8/86
	  	 File/Page
 158161

7/8/86
	  	 1562
 549

7/8/86
	  	 Docket 1491

639-657
 7/8/86
	  	 File No.

86-347412
 7/8/86

								
	 Thirty-Sixth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

86-576027
 12/10/86
	  	 File/Page

86-606666
 12/10/86
	  	 File/Page
 314771

12/10/86
	  	 1571
 240

12/10/86
	  	 Docket 1512
 5-24

12/10/86
	  	 File/Page

86-680502
 12/10/86

								
	 Thirty-Seventh

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

87-532270
 9/21/87
	  	 File/Page

87-530266
 9/21/87
	  	 File/Page
 273181

9/21/87
	  	 1588
 844

9/21/87
	  	 Docket 1555
 844

9/21/87
	  	 File/Page

87-585903
 9/21/87

								
	 Thirty-Eighth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

90-217585
 4/23/90
	  	 File/Page

90-212277
 4/23/90
	  	 File/Page
 146794

4/23/90
	  	 1646
 1280

4/23/90
	  	 Docket 1686

92-120
 4/23/90
	  	 File/Page

88-176460
 4/23/90

								
	 Thirty-Ninth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

91-632073
 12/09/91
	  	 File/Page

91-674397
 12/09/91
	  	 File/Page
 425578

12/09/91
	  	 1687
 743

12/09/91
	  	 Docket 1771

711-728
 12/09/91
	  	 File/Page

91-0574751
 12/09/91

								
	 Fortieth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

92-185636
 4/1/92
	  	 File/Page

92-202372
 4/1/92
	  	 File/Page
 115201

4/1/92
	  	 Book/Page

92-06577
 4/1/92
	  	 Docket 1790

954-970
 4/1/92
	  	 File/Page

92-0169646
 4/1/92

								
	 Forty-First

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

92-0363471
 6/11/92
	  	 File/Page

92-393790
 6/11/92
	  	 File/Page
 214904

6/11/92
	  	 Book/Page

92-011833
 6/11/92
	  	 Docket 1804

73-88
 6/11/92
	  	 File/Page

92-0317072
 6/11/92

								
	 Forty-Second

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

92-0650893
 10/13/92
	  	 File/Page

92-692066
 10/13/92
	  	 File/Page
 384167

10/13/92
	  	 Book/Page

92-21988
 10/13/92
	  	 Docket 1824

670-689
 10/13/92
	  	 File/Page

92-0575062
 10/13/92

								
	 Forty-Third

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

92-0788665
 12/9/92
	  	 File/Page

92-845626
 12/10/92
	  	 File/Page
 471625

12/10/92
	  	 Book/Page

92-27082
 12/9/92
	  	 Docket 1834

187-206
 12/9/92
	  	 File/Page

92-0700568
 12/9/92

								
	 Forty-Fourth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

93-0257065
 4/27/93
	  	 File/Page

93-0277892
 4/27/93
	  	 File/Page
 153382

4/27/93
	  	 Book/Page

93-009487
 4/27/93
	  	 Docket 1859
 Fee
09300
 4/27/93
	  	 File/Page

93-0246725
 4/26/93

								
	 Forty-Fifth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

93-0395609
 6/23/93
	  	 File/Page

93-0420127
 6/23/93
	  	 File/Page
 239922

6/23/93
	  	 Book/Page

93-14224
 6/23/93
	  	 Docket
 Fee 14413

6/23/93
	  	 File/Page

93-0403060
 6/23/93

								
	 Forty-Sixth

Supplemental
 Indenture
	  	 Book
 Page

Date
	  	 File/Page

93-0474705
 7/26/93
	  	 File/Page

93-0496100
 7/26/93
	  	 File/Page
 288868

7/27/93
	  	 Book/Page

93-17399
 7/27/93
	  	 Docket
 Fee 17163

7/27/93
	  	 File/Page

93-0487598
 7/27/93



  
 6 









															
								
	 Forty-Seventh

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

95-0230457
 6/01/95
	 	 File/Page

95-0232951
 6/01/95
	 	 File/Page
 175604

6/01/95
	 	 Book/Page
 95-11739

6/01/95
	 	 Docket
 246-264

6/01/95
	 	 File/Page

95-0313576
 6/01/95

								
	 Forty-Eighth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

95-0230458
 6/01/95
	 	 File/Page

95-0232952
 6/01/95
	 	 File/Page
 175605

6/01/95
	 	 Book/Page
 95-11740

6/01/95
	 	 Docket
 265-284

6/01/95
	 	 File/Page

95-0343577
 6/01/95

								
	 Forty-Ninth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

05-00384477
 1/14/05
	 	 File/Page
 04-683110

7/28/04
	 	 File/Page

04-0766976
 9/28/04
	 	 Book/Page
 04-021901

7/15/04
	 	 Docket
 04-29663

8/16/04
	 	 File/Page

04-941699
 8/13/04

								
	 Fiftieth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

20050441722
 5/25/05
	 	 File/Page

2005000405730
 5/26/05
	 	 File/Page

20050145832
 5/25/05
	 	 Book/Page
 019964

5/25/05
	 	 Docket
 200522373

5/25/05
	 	 File/Page

20050711918
 5/27/05

								
	 Fifty-First

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

20051016267
 11/23/05
	 	 File/Page

2005000945695
 11/28/05
	 	 File/Page

20050981667
 11/29/05
	 	 Book/Page

2006005449
 1/30/06
	 	 Docket
 200553032

12/2/05
	 	 File/Page

20051852692
 12/7/05

								
	 Fifty-Second

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2006-0413693
 6/12/06
	 	 File/Page

2006000404447
 6/16/06
	 	 File/Page

2006-0422620
 6/12/06
	 	 Book/Page

2006-032418
 7/11/06
	 	 Docket
 2006-23999

6/12/06
	 	 File/Page

2006-0802735
 6/14/06

								
	 Fifty-Third

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2006-0683713
 9/26/06
	 	 File/Page

2006000643109
 9/27/06
	 	 File/Page
 713252

9/27/06
	 	 Book/Page
 06-46145

9/28/06
	 	 Docket
 2006-39635

9/29/06
	 	 File/Page

20061310143
 10/3/06

								
	 Fifty-Fourth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2007-0625504
 9/25/07
	 	 File/Page

2007000581227
 9/25/07
	 	 File/Page

2007-0600369
 9/25/07
	 	 Book/Page

2007-036497
 9/25/07
	 	 Docket
 2007-33238

9/25/07
	 	 File/Page

2007-1062404
 9/26/07

								
	 Fifty-Fifth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2009-0320954
 6/12/09
	 	 File/Page

2009000305886
 6/12/09
	 	 File/Page

2009-0311041
 6/18/09
	 	 Book/Page

2009-017587
 6/12/09
	 	 Docket
 16744

6/15/09
	 	 File/Page

20090542104
 6/15/09

								
	 Fifty-Sixth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2010-0252569
 5/20/10
	 	 File/Page

2010000239342
 5/21/10
	 	 File/Page

2010-0235807
 5/21/10
	 	 Book/Page

2010-012850
 5/21/10
	 	 Docket
 2010-12687

5/21/10
	 	 File/Page

20100431348
 5/21/10

								
	 Fifty-Seventh

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2010-0490784
 9/16/10
	 	 File/Page

2010000458947
 9/16/10
	 	 File/Page

2010-0443991
 9/16/10
	 	 Book/Page

2010-023359
 9/16/10
	 	 Docket
 2010-22669

9/16/10
	 	 File/Page

20100800415
 9/16/10

								
	 Fifty-Eighth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

2011-0503399
 09/28/11
	 	 File/Page

2011000478379
 09/28/11
	 	 File/Page

2011-0432021
 09/29/11
	 	 Book/Page

2011-023234
 09/28/11
	 	 Docket
 2011-21920

09/28/11
	 	 File/Page

20110802020
 09/28/11



  
 7 









											
	 Document
	  	 Official Records
	  	 County of Clark
	  	 	  	 	  	 
	 Fifty-Ninth

Supplemental
 Indenture

including the
 Original Indenture

and fifty-eight
 prior supplemental

indentures thereto
	  	 Book
 Page

Date
	  	 File/Page

201110120001817
 10/12/11
	  		  		  	

  

																	
	 	 	 Counties of

	 Document
	 	 Official Records
	 	 Clark
	 	 San Diego
	 	 Orange
	 	 Riverside
	 	 Imperial
	  	 Yuma
	 	 Maricopa

	 Sixtieth

Supplemental
 Indenture
	 	 Book
 Page

Date
	 	 File/Page

201112010001775
 12/1/2011
	 	 File/Page

2011-0643662
 12/1/11
	 	 File/Page

2011000611302
 12/1/11
	 	 File/Page

2011-0529988
 12/1/11
	 	 Book/Page

2011-028759
 12/1/11
	  	 Docket
 2011-26889

12/1/11
	 	 File/Page

20110993917
 12/1/11


 WHEREAS, the Board of Directors of the Company has duly authorized the creation of an additional series
of bonds to be designated “First Mortgage Bonds, Series MMM, due 2042,” as hereinafter set forth in this Sixty-First Supplemental Indenture; and 
 WHEREAS, the execution and delivery of this Sixty-First Supplemental Indenture has been duly authorized by resolution of the Board of Directors of the Company; and 

WHEREAS, all the conditions and requirements necessary to make this Sixty-First Supplemental Indenture a valid, binding and legal
instrument in accordance with its terms and for the purposes herein expressed have been performed and fulfilled and the execution and delivery hereof have been in all respects duly authorized. 

NOW, THEREFORE, in order further to secure the payment of the principal of and premium, if any, and interest on all of the bonds of the
Company at any time outstanding under the Original Indenture, as from time to time amended and supplemented (the “Indenture”) and to secure the performance and observance of each and every of the covenants, conditions and agreements
of the Indenture, as from time to time amended and supplemented, and for and in consideration of the premises, and of the sum of One Dollar ($1.00) to the Company duly paid by the Trustee (the receipt whereof is hereby acknowledged), the Company has
executed and delivered this Sixty-First Supplemental Indenture and has granted, bargained, sold, warranted, released, conveyed, assigned, transferred, mortgaged, pledged, hypothecated, granted a security interest in, set over and confirmed, and by
these presents does grant, bargain, sell, warrant, release, convey, assign, transfer, mortgage, pledge, hypothecate, grant a security interest in, set over and confirm unto U.S. Bank National Association, as Trustee, and to its respective successors
in said trust forever, with power of sale, all property, real, personal and mixed, now owned or hereafter acquired or to be acquired by the Company, and wheresoever situated (except such property as is expressly excepted or excluded from the lien
and security interest of the Indenture, and property of a successor corporation or corporations excluded from the lien and security interest thereof by the provisions of Section 3 of Article XIV thereof) subject to the rights reserved by the
Company in and by other provisions of the Indenture, including in the property subject and to be subject to the lien and security interest thereof and hereof (without in any manner limiting or impairing by the enumeration of the same the scope and
intent of the foregoing or of any general description contained in the Original Indenture or in this or any other supplemental indenture) all lands, rights-of-way, other land rights, flowage and other water rights, power houses, dams, reservoirs,
docks, roads, and buildings, structures and other land improvements; steam, and other electric generating plants, including buildings and other structures, turbines, generators, exciters, boilers and other boiler plant equipment, condensing
equipment, and all auxiliary equipment; stations and substations; electric transmission and distribution systems, including structures, poles, towers, fixtures, conduits, insulators, wires, cables, transformers, services and meters; steam heating
plants and systems, including mains and equipment; gas plants, transmission and distribution systems, including pipe lines, structures, tanks, mains, compressor stations, purifier stations, pressure holders, governors, services and meters;
communication systems, office, shop and other buildings and structures, and equipment; apparatus and equipment and materials and supplies of all other kinds and descriptions; and all municipal and other franchises, leaseholds, licenses, permits, and
privileges; 

  
 8 








 TOGETHER WITH all and singular the tenements, hereditaments and appurtenances belonging or
in any wise appertaining to the aforesaid property or any part thereof with the reversion and reversions, remainder and remainders, tolls, rents and revenues, issues, income, proceeds, product and profits thereof, and all the estate, right, title
and interest and claim whatsoever, at law as well as in equity, which the Company now has or may hereafter acquire in and to the aforesaid property and franchises and every part and parcel thereof (except such property as is expressly excepted or
excluded from the lien and security interest of the Indenture, and property of a successor corporation or corporations excluded from the lien and security thereof by the provisions of Section 3 of Article XIV thereof), subject to the rights
reserved by the Company in and by other provisions of the Indenture; 
 It is hereby agreed by the Company that, except as
aforesaid, all the property, rights, and franchises acquired by the Company after the date hereof shall be as fully embraced within the lien and security interest hereof as if such property were now owned by the Company and were specifically
described herein and conveyed and a security interest therein granted hereby; 
 SAVING AND EXCEPTING, HOWEVER, anything to the
contrary notwithstanding contained herein or in the granting clauses of the Original Indenture and said Supplemental Indentures (a) such property described or referred to in any of such granting clauses as has been from time to time, released
or sold free from the lien and security interest of the Original Indenture (or the Original Indenture, as supplemented) in accordance and compliance with the provisions thereof (or of the Original Indenture, as supplemented, as the case may be), and
(b) all of the following property (whether now owned by the Company or hereafter acquired by it): (1) all gas, electric energy and steam produced, purchased or otherwise acquired; (2) all contracts, choses in action, shares of stock,
bonds, notes, evidences of indebtedness, and other securities, other than any of the foregoing which may be required to be deposited from time to time with the Trustee in accordance with the provisions of the Indenture or are required by some
express provision thereof to be deposited with the Trustee; (3) merchandise and appliances at any time acquired for the purpose of sale or lease to customers and others and contracts for the sale of merchandise and appliances; (4) motor
vehicles; (5) timber on land owned by the Company; (6) minerals or mineral rights in lands owned by the Company; (7) oil, coal or gas, or oil, coal or gas rights in land owned by the Company or gas wells or oil wells or equipment
therefor or coal mines or equipment therefor; (8) fuel and other personal property which are consumable in their use in the operation of the properties of the Company; (9) bills and accounts receivable; (10) cash on hand and in banks
other than such cash as may be deposited from time to time with the Trustee in accordance with the provisions of the Indenture or as is required by some express provision thereof to be deposited with the Trustee; and (11) the last day of the
term of each leasehold estate now or hereafter enjoyed by the Company. The Company may, however, expressly subject to the lien and security interest and operation of the Original Indenture and all indentures supplemental thereto all or any part of
the property of the character described in clause (b) of this paragraph; 
 TO HAVE AND TO HOLD all said properties, real,
personal and mixed, mortgaged, pledged, or conveyed and in which a security interest has been granted by the Company as aforesaid, or intended so to be, unto the Trustee and its successors and assigns forever, subject, however, to Permitted Liens as
defined in the Indenture; 
 IN TRUST NEVERTHELESS, for the equal pro rata benefit and security as provided in the Original
Indenture and all indentures supplemental thereto of all and every of the bonds issued and to be issued in accordance with the provisions of the Original Indenture and all indentures supplemental thereto, without preference, priority or distinction
as to lien or security interest of any over the others by reason of priority in time of the issue, negotiation or maturity thereof, subject, however, to the provisions of the Original Indenture and all indentures supplemental thereto relating to any
sinking fund or similar fund for the benefit of the bonds of any particular series; 
 The Company does further covenant and
agree with the Trustee as follows: 
 ARTICLE I 
 SERIES MMM BONDS 
 Section 1: There is hereby created, for
issuance under the Original Indenture as supplemented by the said Supplemental Indentures (including this Sixty-First Supplemental Indenture), a series of bonds designated Series 

  
 9 








 
MMM, due 2042, each of which shall bear the descriptive title “First Mortgage Bonds, Series MMM, due 2042” (herein sometimes referred to as “Series MMM Bonds”), and the
form thereof shall contain suitable provisions with respect to the matters hereinafter in this Section specified. The Series MMM Bonds shall mature on April 1, 2042 and shall be issued in denominations of $1,000 and integral multiples thereof
as the Company may from time to time execute and deliver. The Series MMM Bonds shall bear interest at the rate and from the date, shall be expressed to mature as to principal, and shall be payable as to principal and premium, if any, and interest at
such place or places and in such money, all as provided in the form of Series MMM Bond set forth on Exhibit A hereto (the “Form of Bond”) and by the applicable provisions of the Indenture. In addition, March 22, 2012
shall be an Interest Payment Date for the Series MMM Bonds for purposes of Section 9 of Article II of the Indenture, provided that no interest shall be payable on such date. The principal and premium, if any, and interest on the Series
MMM Bonds shall be payable at the corporate trust office of the Trustee in the Borough of Manhattan, City and County of New York, State of New York. The Series MMM Bonds shall be dated as in Section 9 of Article II of the Indenture provided
with respect to registered bonds without coupons. 
 The Series MMM Bonds shall further be redeemable, exchangeable,
transferable and otherwise have the terms set forth in the Form of Bond. 
 The Series MMM Bonds shall otherwise be of such
terms, provisions, tenor and form as provided in this Sixty-First Supplemental Indenture. 
 Section 2: The Series
MMM Bonds shall be executed, authenticated and delivered in accordance with the provisions and shall be entitled to the protection and security of the Original Indenture, as supplemented by this Sixty-First Supplemental Indenture and the other
supplemental indentures, and shall be subject to all of the terms, conditions and covenants and limitations thereof. The aggregate principal amount of the Series MMM Bonds, which may be executed by the Company and authenticated and delivered by the
Trustee and secured by the Indenture as from time to time in effect, is limited only to the extent provided in Section 1 of Article II of the Original Indenture. 
 Section 3: The Series MMM Bonds shall be issued only as fully registered bonds without coupons. The fully registered bonds without coupons and the certificate of authentication to be endorsed
on all Series MMM Bonds shall be substantially in the form set forth on the Form of Bond. In addition, the Series MMM Bonds may be issuable in whole or in part in the form of one or more securities that evidence all or part of the bonds of such
series which is issued to a depositary or a nominee thereof for such series (a “Global Security”) and, in such case, the Board of Directors of the Company (or an authorized officer designated by the Board of Directors of the
Company) shall appoint a clearing agency registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), designated to act as depositary (a “depositary”) for such Global Securities. The
definitive Series MMM Bonds shall be numbered in such manner as the Company shall at any time or from time to time determine. 

Section 4: In the event the Series MMM Bonds are issued as a Global Security the following provisions, in addition to the
provisions of the Indenture, shall apply: 
 (1) Each Global Security authenticated under the Indenture shall be
registered in the name of the depositary designated for such Global Security or a nominee thereof and delivered to such depositary or a nominee thereof or custodian therefor, and each such Global Security shall constitute a single bond for all
purposes of this Supplemental Indenture. 
 (2) Notwithstanding any other provision in this Supplemental Indenture, no
Global Security may be exchanged in whole or in part for Series MMM Bonds registered, and no transfer of a Global Security in whole or in part may be registered, in the name of any person other than the depositary for such Global Security or a
nominee thereof unless (A) such depositary has notified the Company that it is unwilling or unable to continue as depositary for the Global Securities and a successor depositary has not been appointed by the Company within 90 days of receipt by
the Company of such notification, (B) if at any time the depositary ceases to be a clearing agency registered under the Exchange Act at a time when the depositary is required to be so registered to act as such depositary and no successor
depositary shall have been appointed by the Company within 90 days after it became aware of such cessation, (C) the Company, in its sole discretion, executes and delivers to the Trustee a written order signed in the name of the Company by its
Chairman of the Board, its President or a Vice President, and by its Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary to the effect that such Global Securities 

  
 10 









 
shall be exchangeable as described below, or (D) a “completed default” (as defined in the Indenture) has occurred and is continuing with respect to the Series MMM Bonds. If any of
the events described in clauses (A) through (D) of the preceding sentence occur, the beneficial owners of interests in the Global Securities will be entitled to exchange those interests for definitive Series MMM Bonds and, without
unnecessary delay but in any event not later than the earliest date on which those interests may be so exchanged, the Company will prepare and deliver to the Trustee definitive Series MMM Bonds in such form and denominations as are required by or
pursuant to the Indenture, and in an aggregate principal amount equal to the principal amount of such Global Securities, such bonds to be duly executed by the Company. On or after the earliest date on which such beneficial interests may be so
exchanged, such Global Securities shall be surrendered from time to time by the depositary as shall be specified in the order from the Company with respect thereto (which the Company agrees to deliver) to the Trustee, as the Company’s agent for
such purpose, and in accordance with any instructions given to the Trustee and the depositary (which instructions shall be in writing but need not be contained in or accompanied by an officers’ certificate or be accompanied by an opinion of
counsel), to be exchanged, in whole or in part, for definitive Series MMM Bonds as described above without charge. The Trustee shall authenticate and make available for delivery, in exchange for each portion of each surrendered Global Security, a
like aggregate principal amount of definitive Series MMM Bonds of authorized denominations as the portion of such Global Security to be exchanged. Promptly following any such exchange in part, such Global Security shall be returned by the Trustee to
such depositary or its custodian. If a definitive Series MMM Bond is issued in exchange for any portion of a Global Security after the close of business at the place where such exchange occurs on or after (i) any regular record date for a date
interest is due (an “Interest Payment Date”) for such bond and before the opening of business at that place of payment on the next Interest Payment Date, or (ii) any special record date for the payment of interest for such bond
which was not punctually paid or duly provided for on any Interest Payment Date and before the opening of business at such place of payment on the related proposed date for the payment of such interest, as the case may be, interest shall not be
payable on such Interest Payment Date or proposed date for payment, as the case may be, in respect of such definitive bond, but shall be payable on the Interest Payment Date or proposed date for payment, as the case may be, only to the person to
whom interest in respect of such portion of such Global Security shall be payable in accordance with the provisions of the Indenture. 
 (3) Subject to Clause (2) above, any exchange or transfer of a Global Security for other Series MMM Bonds may be made in whole or in part, and all bonds issued in exchange for or upon transfer
of a Global Security or any portion thereof shall be registered in such names as the depositary for such Global Security shall direct. 
 (4) Every Series MMM Bond authenticated and delivered upon registration of transfer of, or in exchange for or in lieu of, a Global Security or any portion thereof, shall be authenticated and
delivered in the form of, and shall be, a Global Security, unless such bond is registered in the name of a person other than the depositary for such Global Security or a nominee thereof. 

(5) Unless otherwise specified as contemplated by Section 1 of Article I of this Supplemental Indenture for the Series MMM
Bonds evidenced thereby, every Global Security authenticated and delivered hereunder shall bear a legend in substantially the following form: 

  
 11 









 THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS
REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER
THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY OTHER PERSON IS WRONGFUL, INASMUCH AS THE REGISTERED OWNER
HEREOF HAS AN INTEREST HEREIN. 
 Section 5: The Series MMM Bonds may contain or have imprinted thereon such
provisions or specifications not inconsistent with the Indenture as may be required to comply with the rules of any stock exchange or any federal or state authority or commission, or to comply with usage with respect thereto, and may bear such other
appropriate endorsements or notations as are authorized or permitted by the Indenture. 
 Section 6: In the manner
and subject to certain conditions and limitations specified herein and in the Indenture, Series MMM Bonds may be exchanged without a service charge for a like aggregate principal amount of such Series MMM Bonds of other authorized denomination or
denominations; provided that the Company may require payment of a sum or sums sufficient to reimburse it for any stamp tax or other governmental charge payable in connection therewith. 

Section 7: The Company shall maintain in the Borough of Manhattan, City and County of New York, State of New York, and in
such other place or places as the Company may designate at any time or from time to time, an office or agency where Series MMM Bonds, including Series MMM Bonds issued in definitive form, may be presented for payment, registration, transfer and
exchange as provided therein or in the Indenture. Such office or agency shall be the corporate trust office of the Trustee unless and until the Company shall designate another office or agency by notice in writing delivered to the Trustee.

 Section 8: No transfer or exchange of any Series MMM Bonds pursuant to any of the provisions of this
Article I shall be made except upon and in accordance with all of the applicable terms, provisions and conditions of said bonds and of the Indenture. 
 ARTICLE II 
 MISCELLANEOUS PROVISIONS 

Section 1: This instrument is executed and shall be construed as an indenture supplemental to the Original Indenture and
shall form a part thereof and, as supplemented by this Sixty-First Supplemental Indenture, the Original Indenture as heretofore supplemented and amended is hereby confirmed. 
 Section 2: All terms used in this Sixty-First Supplemental Indenture shall be taken to have meaning as in the Original Indenture, as heretofore supplemented and amended, except terms which may
be otherwise expressly defined herein and in cases where the context clearly indicates otherwise. 
 Section 3: In
order to facilitate the filing of this Sixty-First Supplemental Indenture, the same may be executed in several counterparts, each of which, when so executed, shall be deemed to be an original, but such counterparts shall constitute but one and the
same instrument. 
 Section 4: All of the covenants, stipulations, promises and agreements in this Sixty-First
Supplemental Indenture by or on behalf of the Company shall bind its successors and assigns, whether so expressed or not. 

Section 5: To the extent any provision in this Sixty-First Supplemental Indenture conflicts with any provision in the
Indenture, the provisions of this Sixty-First Supplemental Indenture shall govern; provided, however, that in the event such conflict would require bondholder consent, the terms and provisions of the Indenture shall govern. 


  
 12 









 Section 6: The Original Indenture, as heretofore amended and supplemented,
insofar as it applies to the Series MMM Bonds, this Sixty-First Supplemental Indenture and the Series MMM Bonds shall be governed by and construed in accordance with the laws of the State of California, without regard (to the extent permitted by
applicable law) to conflicts of laws principles thereof; provided, that, notwithstanding the foregoing, the creation, perfection and enforcement of any mortgage or lien on real property or improvements thereon or fixtures attached thereto
under the Original Indenture, as heretofore amended and supplemented, insofar as it applies to the Series MMM Bonds, or this Sixty-First Supplemental Indenture shall be governed by and construed in accordance with the laws of the State where such
real property or improvements thereon or fixtures attached thereto, as the case may be, are located, without regard (to the extent permitted by applicable law) to conflicts of laws principles thereof. 

{Signature Page Follows} 

  
 13 









 IN WITNESS WHEREOF, SAN DIEGO GAS & ELECTRIC COMPANY has caused this Sixty-First
Supplemental Indenture to be signed in its name and behalf by its duly authorized officer and its corporate seal to be hereunto affixed duly attested by its Secretary or one of its Assistant Secretaries, and U.S. BANK NATIONAL ASSOCIATION, to
evidence its acceptance of the trusts hereby created, has caused this Sixty-First Supplemental Indenture to be signed in its name and behalf by its duly authorized officer as of the day and year first above written. 

 

			
	SAN DIEGO GAS & ELECTRIC COMPANY
		
	By:  	 	/s/ Robert M. Schlax
	Name: Robert Schlax
	Title: Vice President, Chief Financial Officer, Controller, Treasurer and Chief Accounting Officer


  

			
	(CORPORATE SEAL)
	
	Attest:
		
	By:  	 	 /s/ Jennifer F. Jett

	Name: Jennifer Jett
	Title:   Corporate Secretary

  

			
	 U.S. BANK NATIONAL ASSOCIATION, AS
 TRUSTEE

		
	By:  	 	/s/ Fonda Hall
	Name: Fonda Hall
	Title:   Vice President









 STATE OF CALIFORNIA            ) 

                         
                               ) ss.: 
 COUNTY OF SAN DIEGO           ) 
 On this 20th
day of March, 2012, before me, ANNIE VICTORIA RUIZ, a Notary Public, personally appeared ROBERT SCHLAX, who proved to me on the basis of satisfactory evidence to be the person whose name is subscribed to the within instrument and acknowledged to me
that he executed the same in his authorized capacity and that by his signature on the instrument the person or the entity upon behalf of which the person acted, executed the instrument. 

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

 WITNESS my hand and official seal. 

					
			
		 	/s/ Anna Victoria Ruiz	 	[SEAL]
		 	Signature of Notary Public	 	

 STATE OF CALIFORNIA            ) 

                         
                               ) ss.: 
 COUNTY OF SAN DIEGO           ) 
 On this 20th
day of March, 2012, before me, NICOLE LISA STROKON-MILLER, a Notary Public, personally appeared JENNIFER F. JETT, who proved to me on the basis of satisfactory evidence to be the person whose name is subscribed to the within instrument and
acknowledged to me that he executed the same in his authorized capacity and that by his signature on the instrument the person or the entity upon behalf of which the person acted, executed the instrument. 

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

 WITNESS my hand and official seal. 

					
			
		 	/s/ Nicole Lisa Strokon-Miller	 	[SEAL]
		 	Signature of Notary Public	 	








 STATE OF CALIFORNIA            ) 

                         
                               ) ss.: 
 COUNTY OF LOS ANGELES           ) 
 On March 21, 2012, before me, THEA HARRIS, a Notary Public, in and for said County and State, personally appeared FONDA HALL, of U.S. BANK NATIONAL ASSOCIATION, personally known to me (or proved to
me on the basis of satisfactory evidence) to be the person whose name is subscribed to the within instrument and acknowledged to me that he/she executed the same in his/her authorized capacity, and that by his/her signature on the instrument the
entity upon behalf of which he/she acted, executed the instrument. 
 I certify under PENALTY OF PERJURY under the laws of the
State of California that the foregoing paragraph is true and correct. 
 WITNESS my hand and official seal. 

					
			
		 	/s/ Thea Harris	 	[SEAL]

  







 EXHIBIT A 
 FORM OF BOND 
 (Attached) 







 [If this bond is issued as a global security, insert the following legend: THIS SECURITY IS A GLOBAL
SECURITY WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS
SECURITY IN WHOLE OR IN PART MAY BE REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE. ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY OTHER PERSON IS WRONGFUL, INASMUCH AS THE REGISTERED OWNER HEREOF HAS AN INTEREST HEREIN.] 
 SAN DIEGO
GAS & ELECTRIC COMPANY 
 (INCORPORATED UNDER THE LAWS OF THE STATE OF CALIFORNIA) 

4.30% FIRST MORTGAGE BOND, 
 SERIES MMM, DUE 2042 
  

					
	No.             	 		 	$
		 		 	 CUSIP No. 797440BQ6
 ISIN No. US797440BQ65


 SAN DIEGO GAS & ELECTRIC COMPANY, a corporation organized and existing under the laws of the State of California
(hereinafter called the “Company”, which term shall include any successor corporation, as defined in the Indenture hereinafter referred to), for value received, hereby promises to pay to
                                        
[If this bond is issued as a global security, insert CEDE & CO. in the foregoing space] or registered assigns, the principal sum of
                                         
    dollars in lawful money of the United States of America, on the first day of April, 2042, and to pay interest thereon from March 22, 2012, at the rate of 4.30% per annum in like lawful money, payable semi-annually, on
the first day of April and October (each, an “Interest Payment Date”) in each year, to the holder of record of this bond on the immediately preceding fifteenth day of March and September, respectively, commencing October 1, 2012,
until the Company’s obligation with respect to the payment of such principal (and premium, if any) shall be discharged as provided in the Indenture hereinafter mentioned. The principal of (and premium, if any) and interest on this bond will be
paid at the corporate trust office of U.S. Bank National Association, or its successor trustee under said Indenture, in the Borough of Manhattan, City and County of New York, State of New York, that the Corporation maintains for such purpose.
Notwithstanding the foregoing, so long as the holder of this bond is a depositary, or its nominee, payment of the principal of (and premium, if any) and interest on this bond will be made by wire transfer of immediately available funds. 

The provisions of this bond are continued following the signature blocks below and such continued provisions shall for all purposes have
the same effect as though fully set forth at this place. 
 This bond shall not be valid or become obligatory for any purpose
unless and until U.S. BANK NATIONAL ASSOCIATION, as Trustee under the Indenture, as amended, or its successor thereunder, shall have signed the certificate of authentication endorsed hereon. 

  
 A-1









 IN WITNESS WHEREOF, SAN DIEGO GAS & ELECTRIC COMPANY has caused this instrument to
be executed in its name by the signature or facsimile signature of its President or any Vice President and its corporate seal or a facsimile thereof to be hereto affixed and attested by the signature or facsimile signature of its Secretary or any
Assistant Secretary. 
  

							
	Dated:
                                         
                       	 		 	SAN DIEGO GAS & ELECTRIC COMPANY
				
		 		 	By:  	 	 
		 		 	President or Vice President
	(CORPORATE SEAL)	 		 		 	

 Attest: 
  

 
 Secretary or Assistant Secretary


  
 A-2









 [REVERSE SIDE OF 4.30% FIRST MORTGAGE BOND, SERIES MMM, DUE 2042] 

This bond is one of a duly authorized issue of bonds of the Company, known as its First Mortgage Bonds, of the series and designation indicated on the
face hereof (the “Series MMM Bonds”), all issued and to be issued under and equally secured by a Mortgage and Deed of Trust dated July 1, 1940, and indentures supplemental thereto, including the Sixty-First Supplemental
Indenture dated as of March 22, 2012 (which Mortgage and Deed of Trust, as so supplemented and as the same may be further amended or supplemented from time to time, is herein called the “Indenture”) executed by the Company to
U.S. Bank National Association, as Trustee (herein called the “Trustee”), to which Indenture reference is hereby made for a description of the property mortgaged, pledged, hypothecated and in which a security interest was granted,
the nature and extent of the security, the rights of the holders of the Series MMM Bonds as to such security, and the terms and conditions upon which the Series MMM Bonds may be issued under the Indenture and are secured. The principal hereof may be
declared or may become due on the conditions, in the manner and at the time set forth in the Indenture, upon the happening of a completed default as in the Indenture provided. 
 Interest on the Series MMM Bonds will be calculated on the basis of a 360-day year consisting of twelve 30-day months. 
 With the consent of the Company and to the extent permitted by and as provided in the Indenture, the rights and obligations of the Company or of the holders of the Series MMM Bonds, or the terms and
provisions of the Indenture or of any indentures supplemental thereto, may be modified or altered by the affirmative vote of the holders of the percentage of principal amount of bonds required by the Indenture; provided, however, that
without the consent of the holder hereof no such modification or alteration shall permit, among other things, the reduction of the principal or premium, if any, or the extension of the maturity of the principal of this bond, or the reduction of the
rate of interest hereon, or any other modification of the terms of payment of such principal or premium, if any, or interest. 

The Company, the Trustee, any paying agent, any registrar, and any depositary may deem and treat the person in whose name this bond is
registered as the absolute owner hereof for the purpose of receiving payment of or on account of the principal hereof and premium, if any, and interest hereon and for all other purposes and shall not be affected by any notice to the contrary.

 All or a portion of the Series MMM Bonds may be redeemed at the Company’s option at any time or from time to time
pursuant to this paragraph. The price at which the Series MMM Bonds will be redeemed pursuant to this paragraph (the “Redemption Price”) on the date fixed for such redemption (the “Redemption Date”) will be equal to
(A) in the case of any Redemption Date prior to October 1, 2041, the greater of the following amounts: (a) 100% of the principal amount of the Series MMM Bonds being redeemed on the Redemption Date; or (b) the sum of the present
values of the remaining scheduled payments of principal and interest on the Series MMM Bonds being redeemed on that Redemption Date (not including any portion of any payments of accrued and unpaid interest to the Redemption Date) discounted to the
Redemption Date on a semiannual basis at the Adjusted Treasury Rate (as defined below) plus 15 basis points, as determined by the Independent Investment Banker (as defined below), plus, in each case, accrued and unpaid interest thereon to the
Redemption Date, or (B) in the case of any Redemption Date on or after October 1, 2041, 100% of the principal amount of the Series MMM Bonds being redeemed on the Redemption Date, plus accrued and unpaid interest thereon to the Redemption
Date. Notwithstanding the foregoing, installments of interest on Series MMM Bonds that are due and payable on Interest Payment Dates falling on or prior to a Redemption Date will be payable on those Interest Payment Dates to the registered holders
of such Series MMM Bonds as of the close of business on the relevant record dates according to the terms of the Series MMM Bonds and the Indenture. The Redemption Price will be calculated on the basis of a 360-day year consisting of twelve 30-day
months. 
 Notice of any redemption will be mailed at least 30 days, but not more than 60 days, before the Redemption Date to
each registered holder of the Series MMM Bonds to be redeemed. Once notice of redemption is mailed, the Series MMM Bonds called for redemption will become due and payable on the Redemption Date and at the applicable Redemption Price, plus accrued
and unpaid interest to the Redemption Date. Redemption will not be conditional upon receipt by the Trustee of monies sufficient to pay the Redemption Price. 

  
 A-3









 Unless the Company defaults in payment of the Redemption Price, on and after the Redemption
Date interest will cease to accrue on the Series MMM Bonds or portions thereof called for redemption. The Company will pay the Redemption Price and any accrued interest once the Series MMM Bonds are surrendered for redemption. If only a portion of
any Series MMM Bonds is redeemed, the Trustee will deliver new Series MMM Bonds for the remaining portion without charge. 

“Adjusted Treasury Rate” means, with respect to any Redemption Date, the rate per annum equal to the semiannual
equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such Redemption Date. 

“Comparable Treasury Issue” means, with respect to any Redemption Date, the United States Treasury security selected by
the Independent Investment Banker as having a maturity comparable to the remaining term of the Series MMM Bonds to be redeemed on such Redemption Date that would be utilized, at the time of selection and in accordance with customary financial
practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Series MMM Bonds. 
 “Comparable Treasury Price” means, with respect to any Redemption Date, (A) the average of the Reference Treasury Dealer Quotations for such Redemption Date, or (B) if only one
Reference Treasury Dealer Quotation is received, such quotation. 
 “Independent Investment Banker” means, with
respect to any Redemption Date, one of the Reference Treasury Dealers appointed by the Company to act as the “Independent Investment Banker.” 
 “Reference Treasury Dealer” means, with respect to any Redemption Date, (A) Goldman, Sachs & Co., one Primary Treasury Dealer (as defined below) selected by Credit Agricole
Securities (USA) Inc., one Primary Treasury Dealer selected by Mitsubishi UFJ Securities (USA), Inc. and one Primary Treasury Dealer selected by Samuel A. Ramirez & Company, Inc. (or their respective affiliates which are Primary Treasury
Dealers) and their respective successors; provided, however, that if any of the foregoing shall cease to be a primary U.S. Government securities dealer in the United States (a “Primary Treasury Dealer”), the Company
will substitute therefor another Primary Treasury Dealer; and (B) any other Primary Treasury Dealer(s) selected by the Company. 
 “Reference Treasury Dealer Quotation” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Company, of the bid and asked prices
for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Company by such Reference Treasury Dealer at 5:00 p.m. (New York City time) on the third business day preceding such
Redemption Date. As used in the preceding sentence, “business day” means any day (other than a Saturday or Sunday) on which banking institutions in The City of New York are not authorized or obligated by law or executive order to remain
closed. 
 In the event that the Company elects to redeem only a portion of the Series MMM Bonds, the bonds to be redeemed shall
be selected in accordance with the procedures of The Depository Trust Company (or its successor as depositary), in the case of bonds represented by a global security, or as provided in the Indenture, in the case of bonds that are not represented by
a global security. 
 As more fully provided in and subject to the provisions of the Indenture, the Series MMM Bonds are also
subject to redemption on any date, under certain circumstances specified in Section 13 of Article XI of the Indenture in case of the disposition or taking of certain properties of the Company, at 100% of the principal amount thereof, together
with accrued interest thereon to the date of redemption. 
 This bond is transferable as prescribed in the Indenture by the
registered owner hereof in person, or by his duly authorized attorney, at the corporate trust office of the Trustee in the Borough of Manhattan, City and County of New York, State of New York, upon surrender and cancellation of this bond and
thereupon a new registered bond of the same series and principal amount will be issued to the transferee in exchange therefor as provided in the Indenture, upon payment of any tax or taxes or other governmental charges required to be paid by the
Company by reason of such transfer. 

  
 A-4









 The registered owner of any Series MMM Bond, at the option of such holder, may surrender the
same, accompanied by a written instrument of transfer in form approved by the Company duly executed by the registered owner, at the corporate trust office of the Trustee in the Borough of Manhattan, City and County of New York, State of New York,
for cancellation in exchange for another or other registered bonds of the said series of higher or lower authorized denominations of an aggregate principal amount equal to the aggregate principal amount of the bond or bonds so surrendered and
bearing interest as provided in Section 9 of Article II of the Indenture, and upon payment of any tax or taxes or other governmental charges required to be paid by the Company by reason of such exchange and subject to the terms and conditions
specified in the Indenture, and thereupon the Company shall execute and deliver to the Trustee and the Trustee shall authenticate and deliver such other bonds to such registered owner at its office or at such agency of the Company, at the option of
such registered owner. 
 No recourse shall be had for the payment of the principal of (or premium, if any) or the interest on
this bond, or any part thereof, or of any claim based herein or in respect hereof or of said Indenture, against any incorporator, or any past or future stockholder, officer or director, as such, of the Company or of any predecessor or successor
corporation, either directly or through the Company, or through any such predecessor or successor corporation, or through any receiver or a trustee in bankruptcy, whether by virtue of any constitution, statute or rule of law or by the enforcement of
any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly waived and released, as more fully provided in the Indenture. 

This Series MMM Bond shall be governed by and construed in accordance with the laws of the State of California, without regard (to the
extent permitted by applicable law) to conflicts of laws principles thereof. 
 ************** 

This bond is one of the bonds of the series designated therein, described in the within-mentioned Indenture. 

 

			
	 U.S. BANK NATIONAL ASSOCIATION,
 As Trustee

		
	By 	 	 
	Authorized Officer

 Date of Authentication :
                                        


  
 A-5