If Alstom exercises that option, the price paid would return Alstom’s investment in those businesses, along with an annual accretion in line approximately to borrowing costs incurred by GE, Steve Bolze, GE vice president power and water, said on a conference call.

Such a sale would be one way that Alstom could increase its liquidity.

Alstom is investing $3.5bn for its share in that JV and two others covering a fusion of GE’s digital energy business and Alstom’s Grid business, and global nuclear and French steam.

GE