A Review on Solar Photovoltaics and Roof Top Application of It

Abstract

‘Energy crisis’ and ‘Energy security’ has been continuously in news since the first oil crisis in 1973. The worries for
environmental impacts due to fossil fuel based power generation also are a matter of concern now for quite some time [1]. In
spite of endeavors to promote renewable sources of energy, the fossil fuel based power generation continues to dominate the
market. Since power generated from coal is more affordable and available to consumers than any other fossil fuel new power
plants are being built to perform at “supercritical‟ and “ultra-supercritical‟ conditions of temperature and pressure, increasing
electricity generation efficiency from average 30% to 50% or higher. These new coal technologies are encouraging a continuous
use of coal for electricity generation and other purposes, making it difficult for renewable energies to become a significant
component of energy mix. To keep pace with the growing energy demands and as a National Action Plan for Climate Change
(NAPCC), there is a need to switch from conventional to non-conventional source of energy. And solar energy is the most
abundant permanent energy source available to use in direct form. In this paper the focus is laid on the solar photovoltaic
technology of power generation and review of the roof top application of it.