'When it comes to solar cells, there is good news and there is bad news. First the bad news. Installing photovoltaic solar panels on your roof will cost you more than you save on electricity bills before the panels have to be replaced. The good news is that you will reduce your carbon footprint and save energy.'
Introduction to an article at the Alpha Galileo research news site, based on
A Life Cycle Analysis of roof integrated photovoltaic systems
G. Bizzarri, G.L. Morini, University of Bologna, Bologna, Italy
International Journal of Environmental Technology and Management 7(1/2) 2007, 134 - 146