Galloper is an extension to Greater Gabbard Wind Farm and was agreed in May 2013. The proposal was to add up to 140 turbines to the development, producing up to 504 MW of electricity. The wind farm was expected to be completed in 2017.[12][13] The project was developed in partnership by Innogy and SSE.

In October 2015 Innogy secured the financing of the project with three other investors each taking 25% of the project: Macquarie Capital, UK Green Investment Bank and Siemens Financial Services. Siemens Wind Power was awarded the turbine supply contract to deliver 56 SWT-6.0-154 turbines.

At its September 2018 inauguration, Galloper is rated at 353 MW. It is owned by Innogy SE (25%), Siemens Financial Services (25%), Sumitomo Corporation (12.5%), ESB (12.5%) and a consortium managed by Green Investment Group and Macquarie Infrastructure and Real Assets (25%). Innogy SE led development and construction of the wind farm.