Commitments and contingencies (Tables) - HECO (Hawaiian Electric Company, Inc. and Subsidiaries)

6 Months Ended

Jun. 30, 2013

Hawaiian Electric Company, Inc. and Subsidiaries

Regulatory projects and legal obligations

Schedule of reductions from the interim D&O

(in millions)
Lower ROACE	$	4.0
Customer Information System expenses	0.3
Pension and OPEB expense based on 3-year average	1.5
Integrated resource planning expenses	0.9
Operational and Renewable Energy Integration study costs	1.1
Total adjustment	$	7.8

Schedule of changes in asset retirement obligation

	Six months ended June 30
(in thousands)	2013			2012
Balance, beginning of period	$	48,431		$	50,871
Accretion expense	363			862
Liabilities incurred	—			—
Liabilities settled	(1,506		)	(2,217		)
Revisions in estimated cash flows	(916		)	—
Balance, end of period	$	46,372		$	49,516