 Quanta Services Inc. PWR, -0.32 said Thursday it has entered an agreement to acquire Blattner Holding Co. for 2.7 billion in stock and cash. Under the terms of the deal, Quanta will pay about 2.36 billion in cash and 340 million in its common shares with Blattner owners eligible for up to 300 million more in earnout payments on achieving certain financial targets. 