Mexican CFE changes dates for opening of economic bids for Ixtepec–Yautepec project June 19, 2018 | Latin America News Reportedly, the economic bids for the ±500 kV Ixtepec–Yautepec high voltage direct current (HVDC) project will now be opened on July 27, 2018, instead of June 28, 2018. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password