Economic Times: It was never the lack of sunshine but high costs that prevented India to tap solar power. That economics is changing fast, making solar power a viable option. Says Kameswara Rao, leader, energy, utilities and mining, PricewaterhouseCoopers (PwC) India, "There is considerable excitement on account of decline in capital costs over the years which has brought grid parity closer to reach. " From a peak of about Rs 18 per unit three years back solar power is now under Rs 11 per unit, making it a viable...