The rest of the turbines will be placed throughout the year and once complete the project will have a capacity of 400 MW.
All the turbines are being installed by a jack-up vessel which will transport the components for eight turbines in each trip from Esbjerg in Denmark to the Rampion site, off the English southeast coast.
Carrying eight 80 metre towers, eight nacelles and 24 turbine blades, the vessel will install each turbine in turn, a process that should take about 24 hours per turbine.
Chris Tomlinson, development and stakeholder manager for wind farm, said: “After seven years of planning, development and initial construction, we are especially proud to have reached this major milestone, which will see the Rampion project really begin to take shape. The first turbine is a powerful symbol of the engineering achievement that Rampion and other offshore wind farms represent.
Rampion is being built by E.ON, the UK Green Investment Bank and Canadian energy company Enbridge.