Contents
Strategig partner

INCOME STATEMENT DATA (In Thousands):
Operations
  
Years
Total
Sales
Total
Cost
of Sales
Gross
Profit
Total
Operating
Expenses
Income
from
Operations
2000
$2,368,476
$1,035,832
$1,332,644
$1,107,013
$225,631
1999
2,030,087
658,946
1,373,141
1,093,327
277,814
1998
2,034,054
823,259
1,210,795
987,858
222,937
1997(1)
2,151,765
967,523
1,184,242
1,029,180
155,062
1996
2,046,827
883,126
1,163,701
775,148
388,553
1995
1,744,274
659,003
1,085,271
711,550
373,721
Interest Expense
Years
Other 
Income 
(Expense) 
Long-
Term
Debt
Short-
Term
Debt
2000
$201,048 
$226,419
$63,149
1999
(13,353)
236,417
57,687
1998
43,996 
170,855
55,265
1997(2)
920,607 
119,972
73,836
1996
15,307 
105,741
46,810
1995
18,657 
95,962
30,360
Income, Taxes, Earnings and Dividends
Years
Income 
Before 
Income 
Taxes 
Income 
Taxes 
Net
Income
Preferred
&
Preference
Dividends
Earnings
Available
for
Common
Stock
Basic
& Diluted
Earnings
Per
Common
Share
Dividends
Declared
Per
Common
Share
2000
$137,111 
$46,061 
$136,481
$1,129
$135,352
$1.96
$1.44
1999
(29,643)
(32,197)
14,296
1,129
13,167
0.20
2.14
1998
40,813 
6,755 
35,649
3,591
32,058
0.48
2.14
1997(2)
881,861 
383,209 
498,652
4,919
493,733
7.58
2.10
1996
251,309 
82,359 
168,950
14,839
154,111
2.41
2.06
1995
266,056 
84,380 
181,676
13,419
168,257
2.71
2.02
ELECTRIC STATISTICS:
MWH Sales (In Thousands)(2)
Years
Residential
Commercial
Industrial
Other
Total
2000
6,222
6,485
5,820
7,000
25,527
1999
5,551
6,202
5,743
5,725
23,221
1998
5,815
6,199
5,808
4,934
22,756
1997
5,310
5,803
5,714
5,441
22,268
1996
5,265
5,667
5,622
6,013
22,567
1995
5,088
5,453
5,619
4,120
20,280
Company System Supply at Peak Hour (Net MW)
Years
System
Net
Load
System
Peak
Responsi- bility(3)
Accredited
Generating
Capacity
System
Capacity(3)
2000
4,531
4,579
5,604
5,242
1999
4,372
4,428
5,458
5,032
1998
4,201
4,287
5,356
4,960
1997
4,016
4,102
5,312
4,984
1996
3,997
4,077
5,312
4,978
1995
3,979
4,004
5,240
4,966
Electric Revenues (In Thousands)
Years
Residential
Commercial
Industrial
Other
& Misc.
Total
2000
$452,674
$367,367
$252,243
$756,848
$1,829,132
1999
407,371
356,314
251,391
414,622
1,429,698
1998
428,680
356,610
257,186
569,209
1,611,685
1997
392,751
339,167
254,076
243,999
1,229,993
1996
403,588
351,806
262,989
179,050
1,197,433
1995
396,025
340,819
268,947
140,104
1,145,895
 
Customers
 Utility Plant
(In Thousands)
Average
Total
Gross
Additions
Total
2000
636,000
$285,400
$6,208,564
1999
628,000
243,100
5,967,475
1998
620,000
158,600
5,768,373
1997
614,000
159,800
5,665,397
1996
606,000
138,500
5,580,784
1995
601,000
179,100
5,495,417

(1) Information reflects the Strategic Alliance with ONEOK and the acquisition of Protection One in November 1997
(2) Excludes power marketing sales volumes
(3) Net of off-system sales and purchases