Arizona Public Service Co. (APS) is a leading electric utility company that operates in the Electric Transmission & Dist sector. The company is based in Phoenix, Arizona, and serves more than 1.2 million customers across the state. APS is committed to providing reliable, affordable, and sustainable energy to its customers, while also promoting economic growth and environmental stewardship.

APS was founded in 1886 as the Phoenix Light and Fuel Company, and has since grown to become one of the largest electric utilities in the United States. The company is a subsidiary of Pinnacle West Capital Corporation, a publicly traded company that is listed on the New York Stock Exchange. APS is regulated by the Arizona Corporation Commission, which oversees the state's public utilities.

APS operates a diverse portfolio of power generation facilities, including coal, natural gas, nuclear, and renewable energy sources. The company's power plants have a combined capacity of more than 6,000 megawatts, which is enough to power more than 1.2 million homes. APS also operates a vast network of transmission and distribution lines, which deliver electricity to homes, businesses, and other customers across Arizona.

In recent years, APS has made significant investments in renewable energy projects, as part of its commitment to reducing its carbon footprint and promoting sustainable energy. The company has set a goal of achieving a 50% clean energy mix by 2030, which includes a mix of renewable energy sources such as solar, wind, and geothermal power.

One of APS's flagship renewable energy projects is the Solana Generating Station, which is located near Gila Bend, Arizona. The Solana plant is a 280-megawatt solar thermal power plant, which uses parabolic trough technology to concentrate sunlight and generate steam, which is then used to power a turbine and generate electricity. The Solana plant is one of the largest solar thermal power plants in the world, and has the capacity to power more than 70,000 homes.

APS has also invested in a number of other solar projects across Arizona, including the Red Rock Solar Plant, the Chino Valley Solar Plant, and the Hyder II Solar Plant. These projects have a combined capacity of more than 400 megawatts, and help to reduce the company's reliance on fossil fuels and promote sustainable energy.

In addition to its renewable energy projects, APS is also committed to promoting energy efficiency and conservation among its customers. The company offers a range of energy-saving programs and incentives, such as rebates for energy-efficient appliances, home energy audits, and smart thermostats. APS also partners with local schools and businesses to promote energy education and awareness.

APS is committed to being a responsible corporate citizen, and has a strong track record of supporting the communities it serves. The company has a robust corporate social responsibility program, which includes charitable giving, volunteerism, and community outreach. APS employees volunteer thousands of hours each year to support local organizations and causes, such as food banks, schools, and environmental groups.

Overall, APS is a leader in the electric utility industry, with a strong commitment to sustainability, innovation, and community engagement. The company's investments in renewable energy and energy efficiency are helping to create a more sustainable future for Arizona and beyond.