July 28 (Reuters) - Australia's Spark Infrastructure Group...

July 28 (Reuters) - Australia's Spark Infrastructure Group (SKI) said on Wednesday it received a sweetened buyout offer from a consortium that included private equity firm KKR & Co Inc KKR.N for access to the electricity infrastructure investor's books.

The consortium, which also includes Ontario Teachers' Pension Plan Board, was now offering A$2.90 for every Spark share, up from its previous offer of A$2.80 apiece, at an 11.5% premium to Spark's last close.