Fluor declined to disclose the value of the contract for the 46-megawatt plant but said the amount was booked in the third quarter.

The engineering and construction company hopes to benefit from rising demand for renewable energy.

Irving-based Fluor said it would begin work immediately and study improvements in performance and cost of plants. The company wants to come up with a design package for Pasadena, Calif.-based eSolar that could be used by developers worldwide.

Fluor shares fell 52 cents to $54.96. In extended trading, they gained 34 cents to $55.30.

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