Results Released in 2010 Sustainability Report

NEW YORK–Alcoa (NYSE:AA) announced today that it has significantly reduced its
carbon footprint, exceeding its 2020 goal, and was the first company to
receive silver-level Cradle to Cradle® Certification for
primary aluminum. The results were released with the publication of
Alcoa’s 2010 Sustainability Report, which examines the Company’s
progress on the sustainability of its products, resources and operations.

“At Alcoa, we take a long-term approach to sustainability,” said Kevin
Anton, Alcoa’s Chief Sustainability Officer. “In 2010, we took our
efforts to a new level with the creation of the chief sustainability
officer position and a renewed focus on the development of a
comprehensive sustainability strategy. We implemented a new set of
strategic sustainability targets to drive progress in our businesses to
2020 and beyond, and developed a scorecard to align our sustainability
targets across each of our businesses,” Anton said.

Significant achievements in the report include:

• Climate Change: Alcoa reduced the greenhouse gas footprint of
  the Company’s operations. Alcoa Global Primary Products lowered its
  CO2 intensity by 7 percent over 2009 levels and achieved a 22 percent
  reduction over 2005 levels, exceeding our 2020 goal of a 20 percent
  reduction. These reductions are the result of strategic efforts to
  reposition operations to take advantage of clean hydroelectric power;
  quickly share best practices to reduce process emissions; and drive
  energy efficiency at every location.
• Products: In 2010, Alcoa received silver-level Cradle to Cradle®
  Certification for primary aluminum. Alcoa is the first aluminum
  company to receive such independent certification from McDonough
  Braungart Design Chemistry (MBDC), assuring customers that the Company
  is continuing to improve the sustainability of its metal, from initial
  production through use and then recycling. The certification was
  earned through process improvements, including reducing energy use,
  deploying efficient water management systems, and recycling.
• Safety: Alcoa ended 2010 with 82 percent of locations reporting
  zero lost workdays and 48 percent with no recordable injuries—a
  significant improvement over 2009 performance.
• Cash Sustainability: Alcoa exceeded every one of the Company’s
  seven Cash Sustainability Program targets, ending the year with more
  than US$1.5 billion in cash on hand. In addition, our debt-to-capital
  dropped to 34.9%—380 basis points lower than 2009.
• Community & Stakeholder Engagement: Alcoa locations are
  engaged in community programs that are characterized by regular
  dialogue with a broad group of stakeholders to understand their issues
  and work together on appropriate resolutions. In addition, Alcoa and
  Alcoa Foundation contributed more than US$36.8 million to the
  communities where the Company operates.
• Employee Engagement: Employee engagement scores as measured in
  our Global Voices survey improved worldwide for the third consecutive
  year. In addition, 49 percent of Alcoa employees participated in
  community service projects during our Worldwide Month of Service in
  October 2010.
• Ethics: Alcoa was again recognized globally as among the most
  ethical companies, placing first in the Basic Resources category in
  the Covalence Ethical Rankings. We have been rated number one in this
  category since the ranking began in 2005. Across all industries and
  companies, we placed 15th out of the 581 companies tracked for the
  2010 ranking, which was released in early 2011.

“In 2010, we were encouraged by the significant progress that we made.
In 2011, we will continue to work on better coordinating the different
aspects of sustainability that already exist across the company and with
stakeholders,” said Anton.

The full report is available online at www.alcoa.com/sustainability.

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 nine consecutive years and approximately
75 percent of all of the aluminum ever produced since 1888 is still in
active use today. Alcoa employs approximately 59,000 people in 31
countries across the world. More information can be found at www.alcoa.com.