Alcoa Participates in the Inauguration of Estreito Hydro Power Plant in Brazil

  Alcoa Participates in the Inauguration of Estreito Hydro Power Plant in
  Brazil

Business Wire

NEW YORK -- October 25, 2012

Alcoa (NYSE:AA) joined with Brazilian business and government dignitaries,
including President Dilma Rousseff, in the inauguration of the 1087-megawatt
Estreito hydroelectric power plant in Brazil. The power plant was developed by
the Estreito Power Consortium, comprised of Alcoa (25.49%), Tractebel Energia,
Vale and Intercement. With the Estreito facility, Alcoa will be 70 percent
energy self-sufficient in Brazil.

"Our investment in the Estreito power plant is an important part of our
strategy for seeking competitiveness for our operations in Brazil, since
energy is a fundamental input in the aluminum industry," said Franklin L.
Feder, Regional CEO of Alcoa Latin America & Caribbean. "The inauguration of
Estreito is ratification of Alcoa's commitment to Brazil and is a practical
demonstration of how the company is playing its part."

Construction of the facility began in 2007, and at the height of construction,
the development generated some 36,000 direct and indirect jobs.

"The five years were full of challenges on this huge project, which in
addition to supplying power for the whole of Brazil and for Alcoa's plants for
the next few decades, will stimulate regional development," said Ricardo
Sayão, Director of Energy for Alcoa Latin America & Caribbean.

The hydropower plant will supply reliable energy to Brazil's North/Northeast
power grid. Alcoa's share of the installed power is earmarked for the
company's Alumar facility.

Estreito is Alcoa's third power generating project in Brazil. Machadinho
(1,140 MW) has been running since 2002, and Barra Grande (708 MW) began
operating in 2005.

About Alcoa

Alcoa is the world’s leading producer of primary and fabricated aluminum, as
well as the world’s largest miner of bauxite and refiner of alumina. In
addition to inventing the modern-day aluminum industry, Alcoa innovation has
been behind major milestones in the aerospace, automotive, packaging, building
and construction, commercial transportation, consumer electronics and
industrial markets over the past 120 years. Among the solutions Alcoa markets
are flat-rolled products, hard alloy extrusions, and forgings, as well as
Alcoa® wheels, fastening systems, precision and investment castings, and
building systems in addition to its expertise in other light metals such as
titanium and nickel-based super alloys. Sustainability is an integral part of
Alcoa’s operating practices and the product design and engineering it provides
to customers. Alcoa has been a member of the Dow Jones Sustainability Index
for 11 consecutive years and approximately 75 percent of all of the aluminum
ever produced since 1888 is still in active use today. Alcoa employs
approximately 61,000 people in 31 countries across the world. More information
can be found at www.alcoa.com.

About Alcoa in Brazil

Alcoa Alumínio S.A. is a subsidiary of Alcoa Inc. Alcoa has been in Latin
America and the Caribbean since the late 1950s and has some 7,000 employees in
the region, with operations in Brazil, Jamaica and Surinam. In Brazil the
company in an integrated producer of aluminum with operations ranging from
bauxite mining to production of finished products. Alcoa has six production
units and three offices in the states of Maranhão, Minas Gerais, Pará,
Pernambuco, Santa Catarina, São Paulo and the Federal District. The company
also has shareholdings in four hydroelectric power stations: Machadinho and
Barra Grande on the border of the states of Santa Catarina and Rio Grande do
Sul; Serra do Facão in Goiás; and Estreito, between Maranhão and Tocantins. In
2011 Alcoa recorded revenues of US$2 billion in Brazil. In the same year the
Company was considered a benchmark in social responsibility and was one of the
21 model companies in the Guia Exame de Sustentabilidade [Exame magazine’s
Sustainability Guide]. Further information can be found at www.alcoa.com.br.

Contact:

Alcoa
Investor Contact
Kelly Pasterick, 212-836-2674
or
Media Contact
Libby Archell, 212-836-2719