Mostly oil, which has to be shipped here. About 30 percent now is renewable; wind, solar, waste to energy (on Oahu/Honolulu garbage is burned to generate steam power), a little hydo. and soon to be back on line after the volcanic eruption, geothermal. But we have double the national average for electricity at about 32 cents/kwh. Goal is for all power generation to be at 100 percent by 2045. Lofty goal, but getting there. But until they ind a way for aircraft to fly on bio fuel, the refineries will remain.