Brazil's hot, dry summer may lead to energy rationing

Brazil faces the possibility of widespread energy rationing for the first time since 2001, as a hot, dry summer has deprived hydroelectric dams of needed water while boosting power use to run air conditioners in sweltering cities.

Even if the country escapes rationing, electricity experts say it may have to boost use of thermo-electric power - a more expensive option which could undermine President Dilma Rousseff's plans to lower energy rates.