AES Hawaii Power Plant

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AES Hawaii Power Plant
Locationnear Kalaeloa, Hawai'i
Coordinates21°18′12″N 158°06′22″W / 21.30333°N 158.10611°W / 21.30333; -158.10611Coordinates: 21°18′12″N 158°06′22″W / 21.30333°N 158.10611°W / 21.30333; -158.10611
StatusActive
Commission dateMay 1992
Owner(s)AES Hawaii
Power station
Primary fuelsubbituminous coal, tires
Power generation
Maximum capacity203 MWe
 
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AES Hawaii Power Plant
Locationnear Kalaeloa, Hawai'i
Coordinates21°18′12″N 158°06′22″W / 21.30333°N 158.10611°W / 21.30333; -158.10611Coordinates: 21°18′12″N 158°06′22″W / 21.30333°N 158.10611°W / 21.30333; -158.10611
StatusActive
Commission dateMay 1992
Owner(s)AES Hawaii
Power station
Primary fuelsubbituminous coal, tires
Power generation
Maximum capacity203 MWe

AES Hawaii Power Plant is a medium-size coal-fired electrical power station located in the south-west corner of a Hawaiian island of Oahu. Owned and operated by AES Hawaii, the plant is the only coal-fired power plant in the state of Hawaii.[1] AES Hawaii consists of a single unit on the grounds of Campbell Industrial Park, has a year-around capacity of 180 MWe, and represents about 11% of Oahu's commercial electricity supply.[1][2]

Coal supply[edit]

AES Hawaii burns approximately 650,000 tons of subbituminous coal each year. The coal is imported from Indonesia via a marine terminal at the Barbers Point Harbor.[3] From there, coal is taken to the plant by a 1.6-mile (2.6 km) long conveyor system.

Alternate fuel sources[edit]

AES operates a relatively clean-burning plant using alternate fuel sources, such as old tires and used motor oil, to help power the plant. The plant also burns carbon from Board of Water Supply filters.[3] In addition, the ash waste product created by AES is used in concrete mixes.[3]

Environmental protection[edit]

AES achieves its smoke-free power and low emissions by introducing limestone early into the coal-combustion process, filtering out harmful sulfur dioxide early on and lessening pollution. Most coal plants use industrial scrubbers to remove harmful pollutants late in the combustion process,[3] which have a higher cost, but are much more efficient, removing as much as 98% of SO2, compared to the 75% removal rate at AES.[4][5]

References[edit]

External links[edit]