Dynergy Inc. says it plans to be acquired by the Blackstone Group for $542.7 million.
Including the assumption of debt, the companies value the deal at $4.7 billion.
Dynergy said Friday its shareholders would receive $4.50 per share in cash for the nearly 120.6 million shares outstanding, representing a 62 percent premium from the closing price on Thursday.
Shares jumped $1.77, nearly 64 percent, to $4.55 in pre-market trading.
Dynergy, based in Houston, separately agreed to sell four gas-fired power plants to NRG Energy for $1.36 billion in cash.
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