The firm, a joint venture between Brown & Company and Taprobane Holdings, said power generation is one of the sectors identified as a "sunshine industry" in which it plans to make investments.
"Browns Investments, through Free Lanka Capital Holdings, is also leveraging other assets on the estates by venturing into hydropower and leisure," the company told shareholders in its annual report.
"The company's investment into hydropower through Free Lanka continues to show good results," it said.
Two hydropower plants, Delta and Sanquhar, which are operational have the capacity to generate 3.2 megawatts.
"By harnessing hydropower potential on the estates, the company expects to generate a total of 16MW of electricity by 2013, which will be supplied to the nati