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Power producer Calpine exploring a sale - WSJ

May 10 (Reuters) - Power producer Calpine Corp is exploring a sale, the Wall Street Journal reported on Wednesday.

The company is working with investment bankers at Lazard Ltd to find possible buyers, the Journal reported. (http://on.wsj.com/2qTSMmy)

Shares of Calpine were up 12.8 percent at $11.36 in late afternoon trading.

Calpine declined to comment.

Up to Tuesday's close, the company had a market capitalization of $3.63 billion. (Reporting by Arunima Banerjee in Bengaluru; Editing by Maju Samuel)