Adani Power Limited (NSEI:ADANIPOWER) is in early discussions with OPG Power Ventures Plc (AIM:OPG) to acquire a 414-megawatt coal-fired plant near Chennai, said two people aware of the development. The deal, if finalized, will likely be valued at INR 10 billion – INR 20 billion, the people said on condition of anonymity. OPG Power Ventures is a thermal and renewable energy company listed on the London Stock Exchange's Alternative Investment Market.