It is not realistic that all of the 1.4 billion people without electricity will receive a reliable grid connection. The amount of investment needed to achieve universal energy access by 2030 was estimated to be between US$35 and US$40 billion a year [72] and [200]. Even if the electricity is available, the pertinent issue is whether the poor population can afford it. Could the connection charges be affordable? Could the monthly fee be affordable? Low-income households in developing countries are faced with serious questions of affordability. Substantial improvements in supply of modern energy are possible using decentralized technologies. SHSs with LED lamps are most suitable and robust option for the rural electrification. However, financing SHS is a major hurdle due to high initial capital costs of solar systems that create a strong liquidity barrier in rural markets, with merge household incomes.