September’s top stories: Energy Transfer to buy Williams, Emera to buy Teco Energy

Energy Transfer Equity (ETE) has agreed to acquire the Williams Companies (WMB) in a transaction valued at about $37.7bn, Papua New Guinea (PNG)-focused Oil Search has rejected Australian energy major Woodside Petroleum's proposal to acquire the company for A$11.6bn ($8.1bn) while Emera has signed a definite agreement to acquire US based energy utility Teco Energy in a $10.4bn transaction aiming to increase it portfolio in the US.