The turbine is sited at Laubersreuth in the southern German state of Bavaria.
FWT said that lattice towers integrate more harmoniously into the landscape, are economic for inland sites and are available for turbine hub heights of up to 160 metres.
In December, FWT began production of 22 2MW turbines at its factory in Waigandshain, Germany, for the first wind farm in Kazakhstan.
Further, the towers can be accessed throughout the year in harsh climates thanks to a heated lift system, the company said.
The towers are shipped in parts to site and assembled into segments, which are then "stacked" without the need for special lifting machinery. The foundations are smaller than those used for tubular towers, resulting in less sealed ground, added supplier Conferdo.
Its reference projects include lattice towers for wind projects in Germany and Aserbaijan, as well as for weather station projects in Ukraine, Bermuda, Barbados and Germany.