Alcoa Worldwide Alumina Refining Capacity
As of March 31, 2015

Country Facility Owners Nameplate
Capacity1
Alcoa
Consolidated
Capacity2
(% Of Ownership) (000 MTPY) (000 MTPY)
Australia
Kwinana Alcoa of Australia Limited (AofA)3 (100%) 2,190 2,190
Pinjarra AofA (100%) 4,234 4,234
Wagerup AofA (100%) 2,555 2,555
Brazil
Poços de Caldas Alcoa Alumínio S.A. (Alumínio)4 (100%) 3905 390
São Luís
(Alumar)
Alcoa World Alumina (AWA) Brasil Ltda.3 (39%)
Rio Tinto Alcan Inc.6 (10%)
Alumínio (15%)
BHP Billiton6 (36%)
3,500  1,890
Spain
San Ciprián Alúmina Española, S.A.3 (100%) 1,5007 1,500
Suriname
Suralco Suriname Aluminum Company, LLC (Suralco)3 (55%)
N.V. Alcoa Minerals of Suriname (AMS)8 (45%)
2,2079 2,207
United States
Point Comfort, TX AWA LLC3 (100%) 2,30510 2,305
Total 18,881 17,271

1 Nameplate Capacity is an estimate based on design capacity and normal operating efficiencies and does not necessarily represent maximum possible production.
2 The figures in this column reflect Alcoa’s share of production from these facilities. For facilities wholly-owned by Alcoa World Alumina and Chemicals (AWAC) entities, Alcoa takes 100% of the production.
3 This entity is part of the AWAC group of companies and is owned 60% by Alcoa and 40% by Alumina Limited.
4 This entity is owned 100% by Alcoa.
5 As a result of the decision to fully curtail the Poços de Caldas smelter, management initiated a reduction in alumina production at this refinery. The capacity that is operating at this refinery is producing at an approximately 45% output level.
6 The named company or an affiliate holds this interest.
7 The capacity that is operating at this refinery is producing at an approximately 95% output level.
8 AWA LLC owns 100% of AMS. AWA LLC is part of the AWAC group of companies and is owned 60% by Alcoa and 40% by Alumina Limited.
9 The Suralco alumina refinery has approximately 876,000 mtpy of idle capacity. Additionally, the capacity that is operating at this refinery is producing at an approximately 85% output level. In March 2015, management decided to curtail an additional 443,000 mtpy (see below).
10 The Point Comfort alumina refinery has approximately 295,000 mtpy of idle capacity.

As of March 31, 2015, Alcoa had approximately 1,171,000 mtpy of idle capacity against total Alcoa Consolidated Capacity of 17,271,000 mtpy.

In March 2015, management initiated a 12-month review of 2,800,000 mtpy in refining capacity for possible curtailment (partial or full), permanent closure or divestiture. This commitment is part of management’s target to lower Alcoa’s refining operations on the global alumina cost curve to the 21st percentile (currently 25th) by 2016. As part of this review, in March 2015, management decided to curtail 443,000 mtpy (one digester) of capacity at the Suralco refinery by the end of April 2015. Management is currently in discussions with the Suriname government to determine the best long-term solution for Suralco due to limited bauxite reserves and the absence of a long-term energy alternative.