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our company generation & transmission generation

generation

We expect to invest $9 billion over the next 15 years to build new power plants and related

infrastwcture to support increasing energy demand.

coal natural gas nuclear

coal-fueled power plants

Four Corners

The 2-unit, 1,540-megawatt Four Corners Power Plant, located on the Navajo Indian Reservation west of Farmington, New Mexico, is operated

by APS. Fueled by low-sulfur coal from the nearby Navajo mine and cooled by the nearby Morgan Lake, the plant is owned by APS and 4 other

utilities in the Southwest. APS stake in Four Corners makes 970 megawatts of energy available to the APS system.

About 8O°/o of the employees at the plant are Native American.

Cholla

The 995-megawatt Cholla Power Plant is located in northeastern Arizona near Holbrook. APS operates the plant and owns Units 1, 2 and 3,

which are capable of producing 615 megawatts of electricity. PacifiCorp (PAC) owns the 380-megawatt Unit 4 - the largest unit at the plant.

The two utilities participate in a seasonal power exchange in which PAC customers in the Pacific Northwest receive electricity from the APS

system in the winter when their electricity demands are high and APS receives PAC power in the summer, during APS’ peak demand.

Cholla is fueled by coal from the McKinley Mine in New Mexico.

Navajo

The Navajo Power Plant is located in northern Arizona on the Navajo Indian Reservation near Page, and features three 750-megawatt coalfueled, steam-electric generating units. An electric railroad delivers coal to the plant from a mine on the Navajo and Hopi Indian Reservations

at Black Mesa in northern Arizona.

The plant is operated by Salt River Project, and is owned by a partnership of 5 utility companies and the U. S. Bureau of Reclamation. APS

owns 14% of the plant.

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https: www.aps.comlenlourcompany generationtransmissionlgeneration!Pageslhome.aspx 11 6 2014
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