Boeing ( BA) has selected General Electric ( GE) and Rolls-Royce as engine suppliers for its new fuel-efficient 7E7 Dreamliner airplane.

Boeing said late Tuesday that both companies will provide engines with similar thrust capacities, allowing all three planned 7E7 models to use the same basic engines, essentially rendering them interchangeable. The airline had previously said it would likely choose two suppliers, as engines are often bought separately from the planes.

United Technologies' ( UTX) Pratt & Whitney was the third final contender for the project, which is reportedly worth up to $40 billion over the next 25 years.

Boeing expects to launch the plane this year.

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