In addition I think the title is worded incorrectly due to the translation. I think it just means that Sloane will not go to auction with La Luna, not that Sloane is no longer with La Luna.
"Thermal will not go to auction for unequal treatment against Hidroituango British Sloan Energy will not be with the La Luna project, whose investment amounted to US $ 1,400 million"
The page doesn't auto-translate properly but you can just copy/paste the whole article into the google translate webpage