Some of the world’s biggest pension funds, seeking long-term returns on green investments, are scouting for deals in India’s solar power sector, where Prime Minister Narendra Modi is targeting $100 billion in investment in the next five years. Power demand in Asia’s third-largest economy is set to surge as the economy grows and more people move into the cities. India estimates peak electricity demand will more than quadruple in the next two decades to 690 gigawatt (GW), which would require rapid growth in generation and transmission capacity.