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Credit agreements and long-term debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

On May 30, 2018, the Utilities issued, through a private placement pursuant to separate Note Purchase Agreements (the Note Purchase Agreements), the following unsecured notes bearing taxable interest (the Notes):

	Series 2018A	Series 2018B	Series 2018C
Aggregate principal amount	$67.5 million	$17.5 million	$15 million
Fixed coupon interest rate	4.38%	4.53%	4.72%
Maturity date	May 30, 2028	March 30, 2033	May 30, 2048
Principal amount by company:
Hawaiian Electric	$52 million	$12.5 million	$10.5 million
Hawaii Electric Light	$9 million	$3 million	$3 million
Maui Electric	$6.5 million	$2 million	$1.5 million

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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