Featuring 97 turbines, the wind farms are designed to serve 600,000 households with green electricity, and are planned to be commissioned in 2016.
A joint venture of Cofely Fabricom and Iemants yards in Hoboken, Belgium, has constructed the separate high-voltage facilities for the two wind projects, reported Renews.
The power generated by the Gode Wind 1 and 2 will now be converted from DC to AC and transported by two substation platforms.
Dong has also laid the first cables for the projects.
Dong Energy Germany offshore wind segment managing director Trine Borum Bojsen said: "At all our previous wind farms, we have always only had one substation platform.
"But the Gode Wind 1 and 2 wind farm is special in many respects: with 97 wind turbines, it will be Germany’s largest offshore wind farm. For this reason we had to install two platforms for the first time."
Dong Energy plans to reduce its offshore wind farms costs by around 40% by 2020.