In this June 18, 2012 photo, Marcos Portales sits on the edge of a porch backdropped by a solar-powered video room, in Pinar del Rio, Cuba. The Caribbean island is proud of its success

 

              In this June 18, 2012 photo, Marcos Portales sits on the edge of a porch backdropped by a solar-powered video room, in Pinar del Rio, Cuba. The Caribbean island is proud of its success
In this June 18, 2012 photo, Marcos Portales sits on the edge of a porch backdropped by a solar-powered video room, in Pinar del Rio, Cuba. The Caribbean island is proud of its success in using alternative energy to bring electricity to isolated hamlets. But scientists say the island, blessed with year-around sunshine and sea breezes but plagued with chronic energy shortages, could be doing much more on the national level, and that its government is missing a golden opportunity to reduce its dependence on subsidized oil from Venezuela. (AP Photo/Franklin Reyes)