The company said in March 2014 that it would not retain its interest in the project, which is located 27km off the Suffolk coast, beyond the development phase, after a review of its offshore wind development portfolio.
SSE will remain a 50% shareholder in the project, alongside RWE Innogy until a final investment decision is made.
After the final investment decision is made, SSE will exit from the project on pre-agreed terms.
SSE offshore renewables director Finlay McCutcheon said: "While we continue to support the Galloper offshore wind farm, SSE will not be progressing its interest in the project beyond the development phase.
"We have now agreed exit terms with our joint venture partner RWE Innogy which will allow Galloper to progress to a Final Investment Decision and also secure a route to value realisation for SSE."
RWE will be responsible for ongoing decisions and funding of the project, which is progressing along the existing timeline.
Construction has started with enabling works for the facility’s onshore substation near Sizewell in Suffolk underway.
Detailed design work on the electrical supply is also underway with construction expected to start in early 2015 while announcements on the selection of preferred suppliers for key contracts are anticipated in the near future.
Image: RWE will be responsible for ongoing decisions and funding on the Galloper offshore wind farm project. Photo: Courtesy of SSE.
