Khurshed Daruvala, Chairman, Sterling & Wilson Group, discusses how financial issues in the green energy sector differ from those in other types of energy-producing sectors with BTTV's Managing Editor Siddharth Zarabi at the Renewable Energy Summit. He goes on to say that, despite the fact that solar is a free source of energy, the total operating costs are the cost of financing, and thus the output costs are higher. Listen to this excerpt.