Enercon is in discussions with the Le Havre Development Agency to install a prototype at the WIN I testing site at Le Havre, on the French coast.
Enercon's E126 7.5MW wind turbine is the biggest in the world.
"We have recently met with Enercon and we are working with their team on the possibility to install a prototype on our test site WIN I located in the area of Le Havre port," said Gérard Mercher, the agency's director general.
WIN I, which should be operational early in 2015, is an onshore site designed for testing and certifying on and offshore turbines.
Until now Enercon has not shown any sign of going offshore, although the high-wind speed, direct-drive configuration and capacity of the E-126 would seem well suited to near shore and offshore use.
Enercon said the E-126 would have a 135-metre tower, taking the tip height to around the 200-metre mark.
Enercon specified that "offshore potential" means that the test site WIN I offers the opportunity to test the wind turbine in high speed coastal winds.