Borsig Rotortechnik produced a first prototype blade of 31 metres at its Rostock works in March, four months after the firm was founded. From 2001, annual production at a new 13,000 square metre facility is expected to reach 850 blades. Initially this will be enough to supply Nordex and Südwind, the two wind turbine manufacturers in the Borsig group, says Dietmar Knünz of Borsig Rotortechnik. The next prototype product will be a set of 39 metre blades to be used on the second Nordex 2.5 MW prototype, to be installed at Neubukow near Rostock by about the end of this month. The forerunner of this blade design has been tested on the two-bladed Aeolus turbine built by MBB and Kvaerner that has been running at a site near Wilhelmshaven since 1994. Borsig Rotortechnik currently employs 25 in blade production, but this will rise to 80 by the end of 2000, and possibly to 150 in a third phase of expansion, the company says. Blades will be built in the 24-39 metre size range.
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