Solar and wind projects have been going up in the islands, but where will the energy come from in the future?
Plans are being proposed for Hawaii's power over the next two decades.
"Over the past three years, we've doubled our clean energy capacity," said Lt. Governor Brian Schatz.
More solar and wind projects are helping the state get closer to its goal of using 70 percent clean energy by the year 2030.
There are other new and tantalizing technologies, like wave energy, fuel cells and algae farms, being discussed, but don't expect them to be a big part of our energy future, at least for the short term.
"We're not depending on some imaginary tech breakthrough to get us to the finish line. We're using technology and projects that can been done right away," said Schatz.
"Certainly I see more solar, not just on rooftops but also fields of solar; solar farms if you will," said Hawaiian Electric Company Vice President Robbie Alm.
Erika Brooksby's vision of tomorrow also includes more solar. Tuesday night, she shared her vision with HECO during the first public hearing over the utility's future plans.
She wants homeowners to be paid for their extra solar power, so neighbors would be making energy for one another.
"There's lots of rooftops. If we could fill them with solar panels it would produce loads of electricity for Hawaii, and its clean energy," said Brooksby, a senior at Mililani High School.
Technology that is currently lighting up the islands, including wind, geothermal, and trash-to-energy conversion, like at the H-Power plant, also factor heavily into the electric company's plans.
An upgrade to the electrical grid is also being prepared for, so the system can handle all the green energy coming in. And some are hoping for more connectivity between the islands.
"We have to have a serious discussion about laying cables between the islands. We need to go from every island on its own, to be able to back each other up and operate as a unit," said Alm.
That has some residents worried about what the energy will cost communities in the future.
"What has resonated loud and clear is each island wants to be energy independent, so that each island can use its own resources for its own power generation," said Kat Brady, with Life of the Land.
According to Alm, the reason other new technologies aren't included into the large-scale plans is because it could take years for alternative crops to grow or facilities to be built.
The islands have become a testing ground for innovative clean energy ideas, so in five to 10 years, the power generation landscape could change dramatically.