Christopher Stanlee, an executive vice president at Abengoa’s US subsidiary, says 100 construction workers are at the site in Hugoton, a small town near the Kansas-Oklahoma border, and the number will increase to about 300 this summer.

Abengoa, based in Madrid, Spain, received a $133m loan guarantee from the US Energy Department (DOE) to help finance the project, which is expected to cost more than $350m.

Plans