The last coal power plant in Hawaii ceased operations this week. Hawaii is now the first state in the nation to ban the fossil fuel. AES Corporation’s coal plant on Oahu reportedly supplied one-fifth of residents’ electricity. It closed after 30 years of operation. The Hawaiian legislature passed a law two years ago banning the use of coal by 2023 in the interest of promoting “a swift transition to a clean energy economy.” At $0.276 per kilowatt-hour, Hawaii currently has the nation’s most expensive electricity, according to data from the Energy Information Administration
