Pakistani workers prepare solar energy light panels on a road divider in Islamabad on February 2, 2014. The country faces an electricity shortfall of around 4,000 megawatts in the sweltering summer, leading to lengthy blackouts that can make the lives of the population a misery and have strangled economic growth. AFP PHOTO/Aamir QURESHI (Photo credit should read AAMIR QURESHI/AFP/Getty Images)