This is why it was necessary to design that tower with a concrete fraction, which was to be prestressed as well. In that case 80m are in concrete and 40m in steel. When we combine materials it is called a “hybrid” tower. The first unit started producing energy in 2009 near Zaragoza (Spain). The tensions and deformation behavior of the tower has been controlled with 200 sensors and instrumented measurement points.

At that time other full-concrete and hybrid towers existed in the market, and others have appeared lately. But the main thing that still differentiates us from other proposals in our Patented solution (no. WO2006111597, US7770343-B), property from «Structural Concrete and Steel S.L.» (SCS) is its orthogonal cable-tendons net: there are several straight vertical units combined with other family of radial tendons. This allows us to make an unbeatable vertical joint between precast parts, able to support any loads and deal with any durability issues, including resisting in the rough and corrosive marine environment.