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LCOE neutral transport cost target). In higher transport cost regions like Michigan, transport costs can be lower than the transport cost target (see Figure 8-10). However, the magnitude of transport cost savings is relatively small compared to the cost adders of the blade and field assembly. Instead of the mid-span joint in our assumption, if the joint is positioned closer to the outer quarter or third of the blade, it would be possible to combine multiple smaller blade elements onto one rail car or truck trailer, thus achieving some additional cost savings. Under this scenario, the larger size of the remaining blade element would result in a modest transport cost increase for this element, but an overall cost savings would still be expected. This strategy may become less effective as the blades approach 115 m since the size of the blade elements become so large, they are effectively as large as current blades which are not package-able. Further optimizing segmented blade design and transport options is beyond the scope of this study, but worthy of more analysis in subsequent R&D. One significant point is clear—segmented blades do enable transport of blade elements to assemble supersized blades on site and these elements can be sized to enable delivery across a wide geographic region of the U.S. Aside from airships, ground-based transportation innovations with controlled blade bending previously described are not likely to achieve the wide geographic deployment potential that segmented blades could achieve. However, segmented blades come with a higher total delivered blade cost as discussed in the next section.

Figure 8-10 Incremental cost impacts of segmented blades – Michigan

DNV GL – Document No.: 10080081-HOU-R-01, Issue: C, Status: FINAL www.dnvgl.com

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Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

Supersized wind turbine blade study  

R&D pathways for supersized wind turbine bladesSupersized wind turbine blade studyLawrence Berkeley National LaboratoryDocument Number: 1008...

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