Made of semi-conducting materials that can directly convert sunlight to electricity without any harmful waste product.

Solar collector are made more efficient by using arrays of mirrors to concentrate the sun's ray onto photovoltaic panels.

According to the Department of Energy, homes incorporating solar heating designs can save as much as 50 percent on heating bills.

The negative aspects of solar energy is that it depends heavily on a range of factors including location, time of year, and the weather.

An extensive list of related words and definitions may be seen at this photovoltaic terms page.