@Vector:  The State does not own any solar or wind farms.  Those are owned by private entities that sell their power to HECO.  Not sure where you got the idea that the State is in the electricity business when HECO is a monopoly.  As for renewable energy, the current limitations of these systems to eventually be relied upon as a sustainable and reliable source of power are the rechargeable battery technology that is available today.  Current Lithium-Ion batteries are prone to overheating and catching fire, so until there is a breakthrough on this front, HECO will need to put in an electrical generator to provide enough power for the Rail to run at night.