The essentially benign nature of PV is a great asset when it comes to its acceptability. Increasing environmental concerns is renewing the interest in renewables globally and PV has become one of the lead players in this movement. Insolation is much more widely distributed around the world than other resources such as wind and hydro. As such, the potential for the use of PV is vast. Many nations have already recognized this and have established their own PV programs within the past decade.