In this June 18, 2012 photo, Yanelis Fleitas sweeps the floor of a solar-powered community building, used for watching videos, in Pinar del Rio, Cuba. The Caribbean island is proud of i

 

              In this June 18, 2012 photo, Yanelis Fleitas sweeps the floor of a solar-powered community building, used for watching videos, in Pinar del Rio, Cuba. The Caribbean island is proud of i
In this June 18, 2012 photo, Yanelis Fleitas sweeps the floor of a solar-powered community building, used for watching videos, 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)