Home > Basic Electricity Statistics > Top 100 Electric Companies by Number of Consumers
Top 100 Electric Companies by Number of Consumers, 2006

Rank
Electric Company
Class of Ownership
Number of Customers
1
Pacific Gas & Electric Co
Investor Owned
5,108,588
2
Southern California Edison Co
Investor Owned
4,755,399
3
Florida Power & Light Co
Investor Owned
4,409,566
4
Commonwealth Edison Co
Investor Owned
3,727,843
5
Consolidated Edison Co-NY Inc
Investor Owned
2,918,466
6
Virginia Electric & Power Co 
Investor Owned
2,328,219
7
Georgia Power Co
Investor Owned
2,287,987
8
Duke Energy Carolinas, LLC 
Investor Owned
2,284,274
9
Detroit Edison Co
Investor Owned
2,166,478
10
TXU Energy Retail Co LP
Power Marketer
2,142,721
11
Public Service Elec & Gas Co
Investor Owned
2,081,114
12
Reliant Energy Retail Services, Inc
Power Marketer
1,884,607
13
Consumers Energy Company
Investor Owned
1,792,469
14
PacifiCorp 
Investor Owned
1,649,405
15
Progress Energy Florida Inc
Investor Owned
1,620,373
16
Northern States Power Co 
Investor Owned
1,599,385
17
PECO Energy Co
Investor Owned
1,515,500
18
Niagara Mohawk Power Corp
Investor Owned
1,468,127
19
Los Angeles City of
Public
1,444,007
20
Alabama Power Co
Investor Owned
1,409,748
21
Progress Energy Carolinas Inc 
Investor Owned
1,396,180
22
PPL Electric Utilities Corp
Investor Owned
1,373,857
23
San Diego Gas & Electric Co
Investor Owned
1,340,883
24
Public Service Co of Colorado
Investor Owned
1,311,546
25
Massachusetts Electric Co
Investor Owned
1,196,975
26
Baltimore Gas & Electric Co
Investor Owned
1,185,069
27
Union Electric Co
Investor Owned
1,170,738
28
Connecticut Light & Power Co
Investor Owned
1,166,914
29
Long Island Power Authority
Public
1,106,202
30
Wisconsin Electric Power Co 
Investor Owned
1,097,510
31
Jersey Central Power & Lt Co
Investor Owned
1,081,486
32
Arizona Public Service Co
Investor Owned
1,051,895
33
Puget Sound Energy Inc
Investor Owned
1,027,872
34
Appalachian Power Co 
Investor Owned
945,080
35
Salt River Project
Public
918,886
36
Ohio Edison Co
Investor Owned
852,040
37
Nevada Power Company
Investor Owned
794,334
38
New York State Elec & Gas Corp
Investor Owned
789,560
39
Portland General Electric Company
Investor Owned
788,831
40
Duke Energy Indiana Inc
Investor Owned
766,165
41
Oklahoma Gas & Electric Co 
Investor Owned
751,041
42
Entergy Gulf States Inc 
Investor Owned
746,351
43
Columbus Southern Power Co
Investor Owned
739,424
44
Ohio Power Co
Investor Owned
710,212
45
MidAmerican Energy Co 
Investor Owned
709,861
46
West Penn Power Co
Investor Owned
707,058
47
Potomac Electric Power Co 
Investor Owned
705,663
48
Cleveland Electric Illum Co
Investor Owned
702,968
49
Boston Edison Co
Investor Owned
700,550
50
Entergy Arkansas Inc
Investor Owned
681,298
51
Duke Energy Ohio Inc
Investor Owned
670,135
52
Tampa Electric Co
Investor Owned
653,706
53
San Antonio City of
Public
652,456
54
Entergy Louisiana Inc
Investor Owned
647,316
55
South Carolina Electric & Gas Co
Investor Owned
616,630
56
Illinois Power Co
Investor Owned
616,026
57
Pennsylvania Electric Co
Investor Owned
585,358
58
Sacramento Municipal Util Dist
Public
582,652
59
Indiana Michigan Power Co 
Investor Owned
580,891
60
Metropolitan Edison Co
Investor Owned
541,680
61
Interstate Power and Light Co 
Investor Owned
538,258
62
Atlantic City Electric Co
Investor Owned
536,278
63
Kentucky Utilities Co 
Investor Owned
527,907
64
Public Service Co of Oklahoma
Investor Owned
516,875
65
Dayton Power & Light Co
Investor Owned
513,074
66
Delmarva Power & Light Company 
Investor Owned
508,050
67
Kansas City Power & Light Co 
Investor Owned
503,517
68
Public Service Co of NH
Investor Owned
486,732
69
Duquesne Light Co
Investor Owned
479,636
70
Narragansett Electric Co
Investor Owned
475,180
71
CPL Retail Energy LP
Power Marketer
473,408
72
Indianapolis Power & Light Co
Investor Owned
466,833
73
Potomac Edison Co 
Investor Owned
465,256
74
Idaho Power Co 
Investor Owned
464,969
75
Aquila Inc 
Investor Owned
464,591
76
Southwestern Electric Power Co 
Investor Owned
453,502
77
Northern Indiana Pub Serv Co
Investor Owned
450,819
78
Wisconsin Power & Light Co
Investor Owned
445,600
79
Direct Energy, LP
Power Marketer
430,947
80
Public Service Co of NM 
Investor Owned
430,211
81
Entergy Mississippi Inc 
Investor Owned
428,036
82
Wisconsin Public Service Corp 
Investor Owned
425,220
83
Gulf Power Co
Investor Owned
415,183
84
Memphis City of
Public
410,383
85
JEA
Public
404,821
86
Louisville Gas & Electric Co
Investor Owned
397,331
87
Southwestern Public Service Co 
Investor Owned
396,652
88
Tucson Electric Power Co
Investor Owned
388,307
89
Central Illinois Pub Serv Co
Investor Owned
387,864
90
Austin Energy
Public
382,638
91
Seattle City of
Public
379,231
92
Monongahela Power Co
Investor Owned
375,017
93
Westar Energy Inc
Investor Owned
358,294
94
Sierra Pacific Power Co 
Investor Owned
356,930
95
Nashville Electric Service
Public
347,959
96
El Paso Electric Co 
Investor Owned
345,929
97
Avista Corp 
Investor Owned
340,732
98
Omaha Public Power District
Public
331,333
99
United Illuminating Co
Investor Owned
321,500
100
NorthWestern Energy LLC 
Investor Owned
319,976

Source: Electric Sales and Revenue 2006 Spreadsheets, Table 10