Hawai'i shuttered its last remaining coal-fired power plant last week, bidding farewell to a carbon-intensive energy source that the island chain has relied on for more than 150 years.
The now-retired power plant, owned by the power generation company AES, had been operating since 1992 on the island of Oahu, home to the state capital of Honolulu. It provided up to 20 percent of the Oahu's electricity and also emitted some 1.5 million metric tons of carbon dioxide each year.
