With the help of a Terex? CC 9800, Aurich-based Enercon GmbH recently erected three E-126 wind turbines in Naumburg-St??en (Saxony-Anhalt). With a rated power of 7.5 MW, Enercon E-126 wind turbines are some of the most powerful in the world, and their components have the size to match. One of the most important challenges during the project was to lift the fully-assembled 350-tonne nacelle to a height of 138 meters in a single lift in order to save time. "We went to various crane manufacturers with this challenge, and ultimately decided on the Terex? CC 9800 after the manufacturer assured us, while discussing the relevant design aspects, that they would be delivering the crawler crane with a four-meter-wide main boom," explains Ludger Jan?en, General Manager of the assembly company Energieanlagen-Montage GmbH. Most notably, this widened boom system provides larger lifting capacities; in fact, the unit's maximum load moment is 26,930 mt when working with a radius of 24 meters and an 800-tonne Superlift counterweight. The crane, configured according to the customer's specifications, was delivered in November 2009.