Nabrawind, Tetrace and Comansa have set up a Joint Venture named Navassy which will be responsible for the complete manufacturing and installation process of the Nabralift® self-erecting system that Nabrawind commercializes worldwide.
The partners have reached an agreement to provide Navassy with the necessary know-how and investment for the design, manufacture and operation of the self-erecting system. Consequently, Navassy, officially constituted this month of December, will become Nabrawind’s supplier and immediately start operating to fulfill Nabralift’s order intake.
This way, Comansa will be responsible for the supply of the self-erecting equipment, combining its extensive know-how in lifting systems with the new technology patented by Nabrawind.
To complete the value proposition, Tetrace will act as field assembly’s main subcontractor, optimizing this process in a highly competitive market.
Accordingly, Navassy is born as an international company due to the global position of its partners and, consequently, will offer worldwide coverage to the Nabralift tower. In this sense, Navassy will greatly benefit from the global presence of its partners, whose operations are spread throughout the globe with offices and subsidiaries in America, Europe, Africa and Asia.
A new self-erecting system
The self-erecting system to be developed by Navassy, called SES 2.0 (Self-Erecting System), represents a remarkable evolution from the prototype used by Nabrawind in the installation of the first tower in Navarre (Spain). While the main objective of this prototype was to confirm the viability of the system, this new generation of self-erecting systems has focused its efforts on reducing the time and costs associated with field assembly.
As a result, the assembly and disassembly times of the SES 2.0 have been significantly optimized, so that its installation has been reduced to three days, while the transfer from one position to another within the wind farm can be done in just one day.
Likewise, the lifting of the SES 2.0 has been improved and it is now capable of integrating two modules per day. Thus, the lifting of a tower between 160 and 170 m hub height will be completed in only three days.
Finally, another innovation of the SES 2.0 with respect to its predecessor relies in the optimization of the assembly platform and the reduction of intermediate operations.