Support WBURGrowing Pains: Nations Balance Growth, Power NeedsPlay04:08Download AudioRichard HarrisAugust 07, 2012 ShareMuslim girls study by candlelight inside a religious school in Noida, near New Delhi, on July 31. The collapse of three regional power grids last week caused a massive power outage that blacked out more than half of India. (Reuters /Landov)