Alcoa Named a Benchmark and Leader in  Maplecroft Climate Innovation Indexes

Alcoa (NYSE:AA)  today announced it was named to the Maplecroft Climate
Innovation Indexes (CII) as a Maplecroft CII Benchmark and Maplecroft
CII Leader.

In the Climate Innovation Index Benchmark, Alcoa ranked third among the
350 U.S. companies evaluated for climate-related innovation and carbon
management programs. The company also was rated third in the CII Leader
category, a ranking of the top 100 performing companies from the
Maplecroft CII Benchmark.

In its ranking of Alcoa as one of the top performers, Maplecroft, in its
press release, stated that 'Alcoa has risen to the number three position
on account of its partnerships approach to innovation across sectors.?

Maplecroft, based in the United Kingdom, is a research and consulting
company that reports on sustainability-related risks. The firm rates
corporations based on performance in five areas: quality of management
on climate issues, mitigation of carbon emissions, emissions reduction,
use of innovative technologies and business practices that capitalize on
climate-related opportunities, and adaptation, which is how companies
address climate challenges within their operations.

'We are pleased to be selected among the top tier of companies
recognized for innovation in climate change and sustainability because
it underscores one of the fundamental advantages of Alcoa and aluminum,'
said Alcoa Chief Sustainability Officer Kevin Anton. 'Aluminum is
strong, light weight and infinitely recyclable, and Alcoa is a leader in
applying these attributes to resolve the challenges presented by today's
changing world.'

In its evaluation, Maplecroft cited among Alcoa′s strengths an
innovative management incentive plan that links energy efficiency
targets to executive compensation. It also noted that Alcoa′s climate
change strategy addresses both changes in legislation and the physical
impacts of climate change. Maplecroft also cited Alcoa Foundation's
'Make an Impact' program, which helps employees and communities lower
their carbon footprint.

The Maplecroft CIIs are attractive to investors because they focus on
innovation, are unique in their high sector diversification and focus on
U.S. stocks, and promote capital inflows into companies that develop
climate change solutions.

Companies included in the CIIs were rated during the period April 2010
to July 2010. The Maplecroft CIIs were launched in January 2010 on the
BLOOMBERG PROFESSIONAL ^® service.

About Alcoa

Alcoa is the world′s leading producer of primary
aluminum, fabricated aluminum and 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.

Alcoa Inc.

Investor Contact

Matthew E. Garth, 212-836-2674

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