This excerpt taken from the PBR 6-K filed Mar 21, 2006.
17. Thermoelectric plant obligations
As a result of adoption of FIN 46 at December 31, 2003, the Company consolidates six thermoelectric plants. Previously, three of these thermoelectric plants were accounted for as capital leases, and therefore, their consolidation did not have a material impact on the Companys financial condition. For the other three thermoelectric plants, the Company was deemed the primary beneficiary because of contractual obligations concerning third-party interests, with amounts equal to the contingent payments required under the contracts recognized to the extent the related payments are deemed probable and can be estimated in accordance with the provisions of SFAS 5.
The balance of thermoelectric obligation at December 31, 2004 was US$ 1,095 and the thermoelectric obligation represented the debt of the consolidated thermoelectric with the third party lender. Pursuant to the acquisitions dicussed below, at December 31, 2005 the thermoelectric financial statements are consolidated on a line by line basis and related obligations are presented together with debt.