According to preliminary analysis conducted by ISA, the nationalization of TDE announced this May 1st must be understood as a negotiation process between the Bolivian

ISA and other important actors of the Colombian capital market have been recognized by the Colombian Stock Exchange –BVC– for their important work as operators

Fitch Ratings Colombia Affirmed ISA’s Rating

Fitch Ratings International affirms ISA’s investmet grade at ‘BBB-’ with positive outlook

ISA accepts the concept rendered by the Consulting and Civil Service Chamber of the Council of State, which made legal remarks on the Company to

Labor situations

ISA’s removal fromundertaking Autopistas La Prosperidad project has no immediate rating implications

This coming Tuesday June 26th, ISA’s shareholders will receive one dividend payment approved by the Regular Meeting of Shareholders of ISA, held on March 30th,

It will construct substation and associated lines in Magdalena province

ISA is authorized to enter into an outside credit (capital) contract

Financial Situations

Designation of Alternate Legal Representatives

Moody’s sees no immediate implications on ISA’s Baa3 rating following the publication of Brazil’s provisional measure on the renewal of electricity concessions

Fitch Ratings: Brazil’s Electric Concession Renewal

The new projects will consolidate the Company as the second electric energy transporter in that country.