Infrastructure investors Actis LLP and Edelweiss Financial Services Limited (NSEI:EDELWEISS) and Malaysian state oil company Petroliam Nasional Berhad are in talks to acquire a portfolio of 185 megawatts (MW) of solar assets in India owned by Finnish utility Fortum Oyj (HLSE:FORTUM) and co-investors for an enterprise value of at least $150 million, two people aware of the development told ET. ET first reported on April 25 that Kotak Mahindra Capital Company Limited had been appointed to find buyers for the solar portfolio.