Siemens will also provide monopile foundations for the project, EnBW said.
But it added that the deal is still pending a final investment decision on Hohe See, which the utility plans to take at the end of this year.
EnBW also intends to sell up to 49.9% in the project to a co-investor.
"We are happy that EnBW has chosen us for the Hohe See offshore wind park.