** Shares of renewable power provider AES AES.N rise 12.9% to $12.60 in extended trading
** AES is exploring options, including a potential sale, amid takeover interest from large investment firms, Bloomberg News reported
** Major private equity and infrastructure investors are studying AES after its shares halved in value, as a $40 billion leveraged buyout would still be among the largest ever - report
** Up to last close, stock down 14% YTD