RAIL has to be powered by POLLUTING oil or super (30 times more) expensive Palm Oil.
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Solar and Wind will never work for Rail because of high traction power demands 24/7, 20 hours a day. It requires a very different power requirement than independent electric cars and buses. The Rail electrification model is insanely expensive and requires the largest monthly electric bill in Hawaii history, even bigger than DoD.
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Aalto has been paid off by PRP. Everything he claims RAIL will do can be done much cheaper by Bus Rapid Transit using non polluting electric buses powered by solar energy. Tesla is making super powerful long lasting batteries that are revolutionizing Smart electric cars and buses. 
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Four passenger rail cars require tremendous traction power stations, especially at grades at the planned Waipahu station climbing up to the useless Hoopili station- where only a hundred people or less will use it according to the Hoopili EIS. It's just built to sell land.