A Power Grid and Its Customers Could Get Stuck Paying for a Failed Wall Street Bet; GreenHat Energy wagered on an electricity traffic jam that never happened. Now utilities, manufacturers, and residential customers are left to deal with the losses. Tim Loh – Bloomberg Two energy traders, veterans of JPMorgan Chase & Co., saw an opening. Starting in 2015, Andrew Kittell and John Bartholomew plunked down millions of dollars in bets in an obscure corner of the energy market. Their strategy depended on certain parts of America's largest electric grid being congested, driving up power prices. But the wagers fizzled. Their portfolio, valued by some at more than $150 million, soon cratered. /jlne.ws/2DuKl93