Still, a deal holds potential benefits for Siemens in the US, which is poised for a record surge in wind generation capacity expansion in the next five years.

By contrast, Gamesa is a negligible player in neighbouring Canada, a much smaller market, where Siemens has done well, mainly in the leading wind province of Ontario.

In the US, Gamesa would enable Siemens to expand a relatively thin client base and that might improve its competitive position, depending on how the combined entity markets itself there.