Not the stuff in the construction costs. It's really like padding which the legislators don't like. If the utility realignment go well because the situation is not as bad as HECO and the legislature feels, then the money will not be spent.  Even the stress test money which the feds demanded and would have swelled costs to 8.7 billion if not that the legislature refused to fund it. Construction costs are back down now to 8.2 billion.

Financing costs are part of contingency funding and depend on projected cash flow. If we just spend more slowly like recently, then we borrow less. For example the City Council recently allotted about 0.4 billion in bonds to the spending so far at 5.5 billion. Less than 10%. 

If the actual construction costs come to 7 billion, then it's 1.2 billion less to finance. Finally, if our economy continues to expand then the extra revenue reduces the need for financing more. Financing costs are more like insurance to insure we always have enough cash. No extra.