INVERSIONES TOCOPILLA LTDA.
December 31st, 2006

Legal Status
Inversiones Tocopilla Ltda.
Private limited company

Capital subscribed and paid in
As of 31 December 2006, the capital subscribed and paid in by Codelco is ThUS$152,209, consistent of 49% of the shares.

Purpose
To purchase or sell, for any reason, shares, bonds and other securities issued by Electroandina S.A. Exercise all rights and meet all obligations deriving from its status as shareholder and holder of these securities, as per the law and company statutes and, in general, purchase, sell and invest shares and rights to companies, provided the object of same is the electric power business in any of its forms; manage such investment and receive the yields thereof; and participate in any other business or activity directly or indirectly related, associated with and/or complementary to the company's purpose.

Board of Directors
Jan Flachet
Manlio Alessi Remedi
Luis Rosales M.
Albert Verhoeven
Jorge Navarrete Martínez
Ricardo Campano Gándara (*)

General manager
Jan Flachet

Codelco's share of capital and changes during the fiscal year
Codelco owns 49% of the company's equity.

Commercial relations with Codelco
There were no commercial ties between both companies.

Contracts with Codelco
There were no contracts with Codelco during 2006.

Investment as a percentage of total head office
2006 Investment in jointly held firm US$181,780,000.
2005 Investment in jointly held firm US$175,417,000.
Total investment as a percentage of head office assets: 1.418%, 2006.