While solar energy may not be the most efficient alternative power source, it is certainly one of the most renewable. As solar energy technology increases, it is also becoming one of the more affordable energy alternatives.
These days there are thin-film solar panels that can literally be rolled up like a map. There are solar panels that are virtually unmistakable from other roofing materials and would fit nicely in even the most prestigious residential neighborhoods and there are many other advantages with modern solar energy technology that were not readily available until recently.
Most people are going to know what solar panels are but even these are rapidly changing. In the early days of solar energy, solar panels were often large, cumbersome and usually very fragile as well. This is because there had to be room for the solar cells, (sometimes called photovoltaic cells) water, the glass (and fragile) top to allow the sun to shine through and a casing large enough to house all of this material.