<p><img style="float:left;margin-right:10px;" width="250" alt="solar cells" src="http://jisibhlphysics.wikispaces.com/file/view/solar-cell_p-n.jpg/66171282/solar-cell_p-n.jpg" class="alignleft" />Grid parity , the purpose at which photovoltaic electricity is the same as or cheaper than grid powe</p>