Wind turbine OEM Nordex claimed a “design error” in the tendering system for German onshore wind had left equipment manufacturers “high and dry”.

Nordex said the overwhelming success of cooperative-style ‘citizens energy’ companies in May’s 807MW tender had created unintended but serious consequences for the wind supply chain.

The citizens-energy projects – which took 96% of the capacity available in the tender, Germany’s first onshore round under a competitive process – do not need permits under the German Federal Emission Control Act and have 54 months to build their wind farm, rather than the two years that is standard in the market, Nordex said.