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EX-31.1 - EXHIBIT 31.1 CEO CERTIFICATION - NORTHWEST NATURAL GAS COex311q22017.htm
EX-32.1 - EXHIBIT 32.1 CEO AND CFO CERTIFICATION - NORTHWEST NATURAL GAS COex321q22017.htm
EX-31.2 - EXHIBIT 31.2 CFO CERTIFICATION - NORTHWEST NATURAL GAS COex312q22017.htm
EX-10.1 - EXHIBIT 10.1 - NORTHWEST NATURAL GAS COex101q22017.htm
10-Q - FORM 10-Q - NORTHWEST NATURAL GAS COform10-qq22017.htm
EXHIBIT 12
NORTHWEST NATURAL GAS COMPANY  
Ratios of Earnings to Fixed Charges  
(Unaudited) 
 
Year Ended December 31,
 
Twelve Months Ended
June 30,
 
Six Months Ended June 30,
In thousands, except share data
2016
 
2015
 
2014
 
2013
 
2012
 
2017
 
2017
Fixed Charges, as defined:
 
 
 
 
 
 
 
 
 
 
 
 
 
Interest on Long-Term Debt
$
34,508

 
$
37,918

 
$
40,066

 
$
40,825

 
$
39,175

 
$
35,833

 
$
18,467

Other Interest
3,404

 
3,173

 
2,718

 
2,709

 
2,314

 
2,747

 
1,049

Amortization of Debt Discount and Expense
1,671

 
1,760

 
1,963

 
1,877

 
1,848

 
1,851

 
1,002

Interest Portion of Rentals
2,048

 
1,976

 
2,302

 
1,910

 
1,864

 
2,373

 
1,289

Total Fixed Charges, as defined
41,631

 
44,827

 
47,049

 
47,321

 
45,201

 
42,804

 
21,807

Earnings, as defined:
 
 

 

 

 

 

 

Net Income
58,895

 
53,703

 
58,692

 
60,538

 
58,779

 
63,274

 
43,039

Taxes on Income
40,714

 
35,753

 
41,643

 
41,705

 
43,403

 
42,538

 
28,592

Fixed Charges, as above
41,631

 
44,827

 
47,049

 
47,321

 
45,201

 
42,804

 
21,807

Total Earnings, as defined
$
141,240

 
$
134,283

 
$
147,384

 
$
149,564

 
$
147,383

 
$
148,616

 
$
93,438

Ratios of Earnings to Fixed Charges
3.39

 
3.00

 
3.13

 
3.16

 
3.26

 
3.47

 
4.28