Credit agreements and long-term debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Schedule of long-term debt

On October 4, 2018, HEI closed on a private placement transaction to issue $150 million senior unsecured notes in two tranches, as follows:

	HEI Series 2018A	HEI Series 2018B
Aggregate principal amount due at maturity	$50 million	$100 million
Fixed coupon interest rate	4.58%	4.72%
Maturity date	December 15, 2025	December 15, 2028
Draw date	October 4, 2018	December 18, 2018

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