I suppose in Hawaii the "issues" are the whole "predictable and plentiful sunlight for about 12 hours a day all year" combined with the whole "Pacific Ocean" th

I suppose in Hawaii the "issues" are the whole "predictable and plentiful sunlight for about 12 hours a day all year" combined with the whole "Pacific Ocean" thing. Solar could easily and cheaply provide all of Hawaii's electricity needs if there were a good way to store the energy for overnight usage. Tesla's home battery packs are actually a great interim solution for such a market, until some larger scale instant-on grid-wide solar energy storage solution is available.