The oral arguments Thursday were the first of three Hawaii’s highest court will hear involving renewable energy projects.
As the pandemic highlights fragile supply chains, the Navy is working with Hawaii to harness the sun and other natural elements for power.
Three-quarters of electric production came from petroleum and coal in 2019.
Advocates say incentives like parking and rebates are needed to encourage the use of EVs in Hawaii.
Over the next three years on Oahu alone, HECO expects it will need wind and solar projects with a footprint 29 times the size of Aloha Stadium.
The Kahuku wind farm developer opposed a proposed ban on coal in Hawaii.
Updated: Honolulu police have made more than 160 arrests while assisting with the delivery of wind turbine parts for Na Pua Makani.