Goldman sees nearly 50% upside for this utility stock

Timothy Gardner and David Knox are seen next to a Petra Nova CCS Facility at NRG Power Plant in Richmond, Texas, U.S., May 18, 2018.
Trish Badger | Reuters

Texas' extreme weather event hit energy provider NRG Energy hard this year, but Goldman Sachs believes the stock's underperformance makes it attractive to investors.

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