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Regulatory Assets and Liabilities (Tables)
12 Months Ended
Dec. 31, 2015
Regulated Operations [Abstract]  
Schedule of Regulatory Assets and Liabilities
Regulatory assets and liabilities reflected in the Consolidated Balance Sheets are presented below.  
 
 
PNM
 
TNMP
 
December 31,
 
December 31,
 
2015
 
2014
 
2015
 
2014
Assets:
(In thousands)
Current:
 
 
 
 
 
 
 
FPPAC
$

 
$
43,980

 
$

 
$

Transmission cost recovery factor

 

 
441

 
2,482

Energy efficiency costs

 

 
629

 
1,393

 

 
43,980

 
1,070

 
3,875

Non-Current:
 
 
 
 
 
 
 
CTC, including carrying charges

 

 
46,147

 
55,292

Coal mine reclamation costs
28,303

 
34,224

 

 

Deferred income taxes
66,990

 
63,645

 
10,244

 
10,556

Loss on reacquired debt
23,627

 
25,439

 
35,405

 
36,703

Pension and OPEB
218,743

 
222,545

 
23,356

 
23,803

AMS surcharge

 

 
1,673

 

AMS retirement costs

 

 
8,549

 
6,453

Renewable energy costs

 
5,263

 

 

Other
5,247

 
5,929

 
2,380

 
1,155

 
342,910

 
357,045

 
127,754

 
133,962

Total regulatory assets
$
342,910

 
$
401,025

 
$
128,824

 
$
137,837

Liabilities:
 
 
 
 
 
 
 
Current:
 
 
 
 
 
 
 
FPPAC
$
(11,410
)
 
$

 
$

 
$

Other
(4,181
)
 
(1,703
)
 

 

 
(15,591
)
 
(1,703
)
 

 

Non-Current:
 
 
 
 
 
 
 
Cost of removal
(284,015
)
 
(277,148
)
 
(26,859
)
 
(29,391
)
Deferred income taxes
(77,502
)
 
(75,941
)
 
(3,283
)
 
(3,923
)
AROs
(33,747
)
 
(35,834
)
 

 

Renewable energy tax benefits
(23,697
)
 
(24,854
)
 

 

AMS surcharge

 

 

 
(5,227
)
Nuclear spent fuel reimbursements
(9,214
)
 
(3,625
)
 

 

Pension and OPEB

 

 
(1,913
)
 
(2,121
)
Other
(6,688
)
 
(8,079
)
 
(495
)
 

 
(434,863
)
 
(425,481
)
 
(32,550
)
 
(40,662
)
Total regulatory liabilities
$
(450,454
)
 
$
(427,184
)
 
$
(32,550
)
 
$
(40,662
)