![Siemens Gamesa upgrades 5.X onshore platform Siemens Gamesa upgrades 5.X onshore platform](/images/stories/News/News2021/Siemens_Gamesa_upgrades_5.X_onshore_platform.jpg)
Both turbines combine a flexible power rating from 5.6MW to 6.6MW with rotor diameters of 155 and 170 meters. The first prototypes of the Siemens Gamesa 5.X, the SG 6.6-155 (in Alaiz, Spain) and the SG 6.6-170 (Hovsore, Denmark), are currently up and connected and in the testing phase.