Article Photos: The Grid: Wind power generation growing, but transmission lags 2/9

In this 2003 file photo, commuters sleep on the steps of the Central Post Office in New York after being stranded following a massive electrical blackout. About 50 million people lost power Aug. 14, 2003, when a tree branch touching high-power transmission lines in Ohio started an outage that cascaded across a broad swath from Michigan to New England and Quebec. <strong>MIKE APPLETON - ASSOCIATED PRESS</strong>