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Commitments and contingencies - (Tables) - HECO (Hawaiian Electric Company, Inc. and Subsidiaries)
3 Months Ended
Mar. 31, 2012
Hawaiian Electric Company, Inc. and Subsidiaries
 
Regulatory projects and legal obligations  
Schedule of changes in asset retirement obligation

 

 

(in thousands)

 

2012

 

2011

 

Balance, January 1

 

$

50,871

 

$

48,630

 

Accretion expense

 

451

 

566

 

Liabilities incurred

 

 

 

Liabilities settled

 

(210

)

(482

)

Revisions in estimated cash flows

 

 

 

Balance, March 31

 

$

51,112

 

$

48,714