heco doesn't get to markup resold electricity. and even if it did there is a small matter of decoupling to deal with so no matter how much or how little electricity they sell or re-sell it doesn't affect their profits as they aren't tied to electricity sales. heco's profit is determined by meeting certain performance criteria agreed upon by the puc and the consumer advocate. when heco meets the performance metrics they are allowed to recoup costs and earn a reasonable profit.

decoupling was also re-examined a few years ago but it is still the model the utility operates under to this day.

here's a link to a blog that explains decoupling in an easy to understand manner:

http://www.ililani.media/2014/10/cutting-link-between-hawaiian-electric.html

decoupling was a genius idea for heco. if their profits were tied to electricity sales instead of decoupling they could very well be filing for bankruptcy by now. electricity sales has been declining since 2004 due to energy conservation.