Gurugram-headquartered Serentica had earlier raised $650 million from private equity firm KKR. : New Delhi: Serentica Renewables, promoted by Sterlite Power, is planning to sell a minority stake to raise around $300 million to fund its ambitious growth plans. The company will appoint a sell-side banker to run the process, two people aware of the development said. “The plans is at an early stage, with the sell side banker to be appointed," said one of the two people cited above, requesting anonymity.