• AES CHANGUINOLA, S.R.L.

  • AES PANAMA, S.R.L.

  • ALTERNEGY S.A.

  • ASHMORE ENERGY INTERNATIONAL

  • BAHÍA LAS MINAS CORP.

  • BALTIMORE GAS & ELECTRIC (CONSTELLATION POWER)

  • BW VENTURES, S.A.

  • CELSIA S.A., E.S.P.

  • ELEKTRA NORESTE

  • EMPRESAS PUBLICAS DE MEDELLIN

  • HIDROECOLÓGICA DEL TERIBE, S.A.

  • GAS NATURAL ATLÁNTICO S DE RL

  • IDEAL PANAMA, S.A. (CARLOS SLIM GROUP)

  • LATIN AMERICA POWER

  • PETROAMERICA TERMINAL, S.A. (PATSA)

  • PETROLEOS DELTA

  • PUMA ENERGY

  • SHELL OIL COMPANY

  • THE SHELL COMPANY (W.I.) LIMITED

  • VTTI LATIN AMERICA, B.V.