The 365th turbine was installed this week two months ahead of schedule, Vestas said. Installation of the Vestas V52 850kW turbines took less than a year, according to the manufacturer.
The project's developing consortium includes Kemperman Paardekooper & Partners Africa, Aldwych International, the Investment Fund for Developing Countries of Denmark, Norfund, and Vestas (12.5%).
Upon completion of the project in 2017, Google will acquire Vestas' 12.5% stake.
The smaller, high-speed turbines are easier than MW-scale turbines to transport the 1,200km distance from Mombasa Port to the site.
As part of the deal, Vestas will service the turbines for 15 years. The company said it will base an operations and maintenance team in Kenya to work on the project.
Branded Kenya's single biggest private investment of any kind at close to $1 billion, it is part of folklore now that project co-founder Carlo Van Wageningen first conceived the project on a wind-lashed fishing trip on Lake Turkana back in 1998.
The project required the building of 210 kilometres of roads and 430 kilometres of power lines.